The power required is 66.09 kW for maintaining a flow rate of 75.0 L/s to a water tower that stands 92.0m high, the steps for calculation will be explained.
The power required to maintain the flow rate to the water tower can be determined by considering the amount of work needed to lift the water against gravity.
First, we need to find the mass of water being pumped per second. Since each litre of water has a mass of 1.00 kg, the mass of water per second would be:
75.0 kg/s (75.0 L/s * 1.00 kg/L).
Next, calculate the work done to lift the water. The work done is given by the formula:
W = mgh,
where m is the mass, g is the acceleration due to gravity (approximately 9.8 m/s²), and h is the height of the tower.
Plugging in the values,
\(W = (75.0 kg/s) * (9.8 m/s^2) * (92.0 m)\)
= 66,090 J/s (or 66.09 kW).
Therefore, the power required to maintain the flow rate of 75.0 L/s to the tower is approximately 66.09 kW. This power is needed to overcome the gravitational force and lift the water to the height of the tower.
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A food worker has cooled a pot of soup from 136*F to 70*F within 2 hours.What is the maximum amount of time she should take to cool the soup from 70*F to 41*F
A. 2 hours
B. 4 hours
C. 6 hours
D. 8 hours
The maximum amount of time a food worker should take to cool the soup from 70*F to 41*F is 4 hours.The correct answer is b.
According to the FDA's Food Code, potentially hazardous foods must be cooled from 135°F to 70°F within two hours, and from 70°F to 41°F within an additional four hours.Foodborne illnesses can be prevented by the following measures: Cook meat to the correct temperature.
Bacteria that cause foodborne illness can be killed by cooking food to the correct internal temperature. For example, ground beef should be cooked to an internal temperature of at least 160°F. The internal temperature should be checked with a food thermometer.
Take steps to keep the kitchen clean. It's critical to keep the kitchen clean to avoid the spread of bacteria. Countertops, utensils, and cutting boards should all be cleaned with hot soapy water.Routinely rinse fruits and vegetables. Vegetables and fruits should be thoroughly rinsed before consuming to remove any germs or dirt that might be present.
You should wash the produce under running water before cutting or eating it.Avoid cross-contamination. Keep raw meat away from cooked food to prevent contamination. You should never use the same knife or cutting board to cut both raw meat and fresh vegetables.
If you need to use the same cutting board, make sure to clean it thoroughly before reusing it.
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Why is speed the magnitude of velocity?
Yes, Speed is the magnitude of its velocity.
What is speed?
Speed is a scalar, while velocity is a vector (just a number). A velocity, on the other hand, has both a direction and a magnitude. As previously stated, the magnitude of the velocity is referred to as the speed.
The speed of a moving object is the distance it travels in a given amount of time.
The distance travelled divided by the time gives the average speed of an object in a given time. The speed of an object is defined as the distance travelled per unit of time. When the speed of an object changes, it becomes faster or slower. When the speed of an object increases, this is referred to as acceleration. Deceleration, also known as negative acceleration, occurs when an object slows down as its speed decreases.
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what is the acceleration of an object if the force equals 300 N and the mass is 25kg?
Answer:
Explanation: If a net force of 50 N pulls on a 10 kg object, how much acceleration will it cause? Then an answer is possible. Equation: Net force = mass * acceleration.
a clod of dirt falls from the bed of a moving truck. it strikes the ground directly below the end of the truck. what is the direction of its velocity relative to the truck just before it hits? is this the same as the direction of its velocity relative to ground just before it hits? explain your answers.
The direction of the velocity of the clod of dirt relative to the truck just before it hits is in the same direction as that of the truck.
The direction of the velocity of the clod of dirt relative to the ground just before it hits is in the opposite direction as that of the ground.
What is relative velocity?The relative velocity of an object in motion is the velocity of that object when viewed from a reference point.
The direction of the velocity of the clod of dirt before it hits the ground is in the same direction as that of the truck.
However, compared to the ground, the direction of the relative velocity is in the opposite direction.
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what is the name of the part of the microscope that the objectives are attached to? (choose the best answer)
The part of the microscope that the objectives are attached to is called the (C) nosepiece.
The nosepiece is a rotating mechanism located below the microscope's body tube. It holds the objectives, which are the lenses responsible for magnifying the specimen. The nosepiece typically has multiple positions, allowing the user to switch between different objective lenses for varying levels of magnification.
This convenient feature eliminates the need to manually remove and replace objectives when changing magnification. By rotating the nosepiece, different objectives can be brought into position above the specimen. This allows for quick and efficient adjustments in magnification without disrupting the viewing process.
Hence, the nosepiece plays a critical role in the microscope's functionality by providing a convenient way to switch between objectives and adjust the magnification level.
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Here is the complete question:
What is the name of the part of the microscope that the objectives are attached to? (Choose the best answer)
A. Ocular
B. Stage
C. Nosepiece
D. Arm
the specific volume of water vapor at 0.3 mpa, 160 °c is 0.651 m3/kg. molecular weight of water vapor is 18.02 kg/kmol. if the water vapor occupies a volume of 2 m3, determine: (a) the amount present, in kg and kmol
The amount of water vapor present in a volume of 2 m3 can be determined using the specific volume and molecular weight. The amount is approximately 3.075 kg and 0.1707 kmol.
The specific volume of water vapor at a given pressure and temperature is given as 0.651 m3/kg. This means that for every kilogram of water vapor, it occupies a volume of 0.651 m3. We are given that the water vapor occupies a volume of 2 m3. To find the amount of water vapor present, we can use the equation:
Amount of water vapor = Volume / Specific volume
Substituting the given values, we have:
Amount of water vapor = 2 m3 / 0.651 m3/kg
Calculating this, we find that the amount of water vapor present is approximately 3.075 kg.
To determine the amount in kilomoles (kmol), we need to divide the mass by the molecular weight of water vapor. Given that the molecular weight of water vapor is 18.02 kg/kmol, we can calculate the amount in kilomoles:
Amount in kmol = Amount in kg / Molecular weight
Substituting the values, we have:
Amount in kmol = 3.075 kg / 18.02 kg/kmol
Calculating this, we find that the amount of water vapor present is approximately 0.1707 kmol. Therefore, the amount of water vapor present in a volume of 2 m3 is approximately 3.075 kg and 0.1707 kmol.
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The radius of a Bromine (Br) atom is 100 pm. What is its' Circumference?
Answer:
The circumference of the bromine atom is 628 pm
Explanation:
The formula for the circumference of a circle is 2πr.
Where π is 3.14 and r is the radius of the circle.
Since atoms have a circular shape. The formula above can be used to determine the circumference of an atom (bromine atom in particular).
circumference of the bromine atom is 2πr (where r is 100 pm)
2 × 3.14 × 100 = 628 pm.
The circumference of the bromine atom is 628 pm
t/-15=-3. what is t?
Answer:
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A 500N car is pulled up to 20m plant to a flat from 5m above the ground by an effort of 150N parallel to the plank what is the VR??who can answer!!!!
Answer:
4Explanation:
VR = Velocity ratio = Distance moved by effort/Distance moved by load
Given:
Distance moved by effort = 20m
Distance moved by Load = 5m
VR = 20/5
VR = 4
Hence the velocity ratio of the car is 4
a little league player balances a bat 55.0 cm from one end. she then hangs her 0.540-kg batting helmet on that end of the bat and the balance point moves 23.5 cm toward the helmet. determine the mass of the bat.
The weight of the bat is 1.29 kg. to the given question.
with regard to it regarding to it,
Equilibrium point of the glove, x = 55.0 cm
Weight of the helmet, m = 0.540 kg
Center of gravity of a baseball bat, C = 23.5 cm
Let M be the mass of the bat.
The formula for the center of mass is:
C = MX+mx/M+m
X = 0
C = mx/M+m
23.5 = 0.54 x 55.0/M+0.54
23.5=29.7/M+0.54
23.5-0.54 = 29.7/M
22.96 = 29.7/M
M = 29.7/22.96
M = 1.29 kg
So the mass of the bat is 1.29 kg.
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A concave lens creates a virtualimage at -47.0 cm with amagnification of +1.75. What isthe object distance?(Mind your minus signs.)(Unit = cm)
Object distance = 26.86 cm
Explanation:Given:
Image distance, v = -47.0 cm
Magnification, M = 1.75
Object distance, u = ?
\(\begin{gathered} M=\frac{|v|}{|u|} \\ \\ 1.75=\frac{47.0}{u} \\ \\ u=\frac{47.0}{1.75} \\ \\ u=26.86\text{ cm} \\ \end{gathered}\)Object distance = 26.86 cm
You are asked to determine the identity of an unknown liquid and can measure only one physical property. You hear the liquid and record that the liquid turns into vapor at 100°C.
Which physical property does this demonstrate?
A. Melting point
B. Boiling point
C. Ability to conduct electricity
D. Meltability
The answer is The boiling Point as the transition from liquid to gas occurs at the boiling point.
The actuality that it changes from liquid to vapor indicates that you are working with the substance's boiling point.
The material is pure if its temperatures does not change when it turns phases. Since water turns liquid at 100°C in this situation, water is likely the culprit.
The temperature at which a specific liquid will boil is known as its boiling point. For instance, water reaches its boiling point at 1 atm, or 100 degrees Celsius. The temperature of the liquid, the pressure of the atmosphere, and the pressure of the vapor all affect its boiling point.
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Using the image below, figure out the kinetic energy of each vehicle. Formula, Ke=1/2mxv^2
The kinetic energy of the truck is approximately 1,964,180 Joules. The kinetic energy of the car is approximately 250,003 Joules.
How to determine kinetic energy?To calculate the kinetic energy of each vehicle, use the formula:
Kinetic Energy (KE) = 1/2 × mass × velocity²
Given the mass and velocity of each vehicle, plug in the values and calculate the kinetic energy.
For the truck:
Mass = 6,000 kg
Velocity = 92 km/h
= 92,000 m/3600 s
≈ 25.56 m/s
Using the formula:
KE = 1/2 × 6,000 kg × (25.56 m/s)²
Calculating the result:
KE = 1/2 × 6,000 kg × 655.3936 m²/s²
KE ≈ 1,964,180 Joules
Therefore, the kinetic energy of the truck is approximately 1,964,180 Joules.
For the car:
Mass = 1,200 kg
Velocity = 100 km/h
= 100,000 m/3600 s
≈ 27.78 m/s
Using the formula:
KE = 1/2 × 1,200 kg × (27.78 m/s)²
Calculating the result:
KE = 1/2 × 1,200 kg × 771.6884 m²/s²
KE ≈ 250,003 Joules
Therefore, the kinetic energy of the car is approximately 250,003 Joules.
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Light waves that have been emitted or reflected by an object enter the eye and first pass through the transparent layer called the _______, where they are refracted. The light rays are then refracted again as they pass through the transparent _______.
Light rays first pass through the transparent layer called the cornea and then refracted again as they pass through the transparent lens.
How do light rays flow in the eyes?
The first factor in the journey of light via the eye is the objects being seen and how they produce, reflect, or change the light in various ways.
The visual cortex of the brain's occipital lobe serves as the destination of the light pathway, which starts with photoreceptors in the retina. Rod and cone cells are two different types of photoreceptors. When it comes to eyesight in low light and in peripheral vision, rods can be especially helpful.
The cornea is where most of the refraction occurs as light enters the eye's curved, transparent front surface. The natural or crystalline lens of the eye also distorts light rays. When an item passes in front of the eye, its rays pass through the transparent cornea and enter the eye.
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Aircraft carriers use catapults to launch jets from their deck. One such catapult accelerates a 18,900 kg aircraft from rest to 61 m/s in 3.3 s. What is the magnitude of the force (in N) required to do this?
Given that the mass of catapult, m = 18900 kg
The initial velocity is
\(v_o=\text{ 0 m/s}\)As the body is at rest initially.
The final speed is
\(v_f=\text{ 61 m/s}\)The time taken is t = 3.3 s
We have to find the force.
According to Newton's second law, the formula to calculate force is
\(\begin{gathered} F=\text{mass}\times acceleration \\ =m\times\frac{(v_f-v_o)}{t} \end{gathered}\)Substituting the values, the force will be
\(\begin{gathered} F=18900\times\frac{61-0}{3.3} \\ =349363.63\text{ N} \end{gathered}\)Thus, the force is 349363.63 N
A satellite weighing 5,400 kg is launched into orbit 30,000 km above sea level. The mass of Earth is 6.0 × 1024 kg and its radius is 6,400 km. The gravitational constant is 6.673 × 10–11 N•m2/kg2. What is the gravitational force of Earth on the satellite in scientific notation with two decimals.
A satellite weighing 5,400 kg is launched into orbit 30,000 km above sea level. The mass of Earth is 6.0 × 1024 kg and its radius is 6,400 km. The gravitational constant is 6.673 × 10–11 N•m2/kg2 . What is the gravitational force of Earth on the satellite in scientific notation with two decimals.
–1.6 × 103 N
–1.63 × 103 N
–2.4 × 103 N
–5.27 × 104 N
The gravitational force of Earth on the satellite, given that the satellite is launched into orbit 30000 km above sea level is 1.63×10³ N
How do I determine the gravitational force?The gravitaional force between two objects can be obtained by using the following formula:
F = GM₁M₂ / r²
Where
F is the gravitaional force G is the gravitational constant M₁ and M₂ are the masses of the objects r is the distance apartThe following data were obtained from he question:
Mass of satellite (M₁) = 5400 = 5.4×10³ KgHeight (h) = 30000 km = 30000 × 1000 = 30000000 mMass of Earth (M₂) = 6.0×10²⁴ KgRadius of Earth (R) = 6400 km = 6400 × 1000 = 6400000 mDistance apart (r) = R + h = 6400000 + 30000000 = 36400000 mGravitational constant (G) = 6.673×10¯¹¹ Nm²/Kg²Gravitational force (F) =?The gravitaional force can be obtained as shown below:
F = GM₁M₂ / r²
F = (6.673×10¯¹¹ × 5.4×10³ × 6.0×10²⁴) / (36400000)²
F = 1.63×10³ N
Thus, the gravitational force is 1.63×10³ N
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Obtain information about commonly used gadgets or devices which are based on the principles of newtons laws of motion.
One such gadget is the airbag, which is designed to protect occupants in vehicles during collisions.
When a vehicle experiences a sudden deceleration, the airbag system uses Newton's first law (inertia) to sense the change in motion and rapidly inflates the airbag to prevent passengers from hitting hard surfaces.
Another example is the rocket, which follows Newton's third law of motion (action and reaction). Rockets work by expelling gases in one direction, causing the rocket to move in the opposite direction. This principle is used in various applications, such as space exploration and fireworks displays.
Additionally, devices like elevators and escalators also rely on Newton's laws of motion. Elevators use Newton's second law (force equals mass times acceleration) to lift or lower passengers. Escalators, on the other hand, utilize Newton's first and second laws to transport people between different levels.
These gadgets and devices demonstrate the practical application of Newton's laws of motion in everyday life, enhancing safety, transportation, and convenience.
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the ability to see the world in three dimensions is called
The ability to see the world in three dimensions is called depth perception. It is the visual ability to perceive the relative distance of objects in space and to see them in three dimensions.
Depth perception is an important aspect of vision that allows us to accurately judge distances, perceive spatial relationships, and interact with our environment.
It is the result of the brain processing information from both eyes to create a single, three-dimensional image.
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which would cause a greater change in energy of motion doubling the weight or doubling the speed why
Answer:
Doubling the speed.
E - M v^2
M = W / g energy is proportional to weight
But energy is proportional to v^2
Compare your everyday experiences to the simulation. Design a few tests like rolling things off a table or tossing some things into a basket or bowl to determine how well the simulation represents projectile motion. Some good objects are tightly rolled socks or paper crumpled into a ball. Write about your experiments and compare them to the simulation
If we throw a socks in to the bowl then it is going with a few unfold situation by means of the projectile and follows the trajectory. Crumpled paper use for the projectile additionally works gud for the simulation.
Crumpled paper has irregular form and mild in weight and it is able to divert in a way by air force or by means of any other motive mild weight. hence simulation and projectile interest are interlinked to every different.
Projectile motion is used in many real-life applications such as designing rockets, ballistic missiles, and artillery, as well as in sports such as baseball, golf, and archery. The concept of projectiles is also relevant in fields such as engineering, military science, and sports. For example, the design of a projectile such as a bullet or missile can affect its accuracy and effectiveness, while knowledge of projectile motion can aid in the design of sports equipment such as golf clubs or javelins.
When a projectile is launched, it follows a curved path known as a trajectory, which is determined by the initial velocity, angle of launch, and the gravitational and atmospheric forces acting on it. The motion of projectiles is studied in physics, where concepts such as projectile motion, trajectory, range, and maximum height are analyzed.
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is a corroding metal a physical or chemical change?
Answer:
Coording metal is a physical change.
Which of the following describes a reference point?
A. The location of an object before its motion begins
B. The center point of a grid
C. The point at which the direction of motion changes
D. The position of an object after its motion has stopped
Item 4 In a heat engine, 500 J of heat enters the system, and the piston does 300 J of work. What is the final internal (thermal) energy of the system if the initial energy is 1500 J
The final internal (thermal) energy of the system is 1700 J.
To determine the final internal energy of the system, we need to consider the conservation of energy in the heat engine. The heat engine is a device that converts heat energy into mechanical work. In this case, 500 J of heat enters the system and 300 J of work is done by the piston.
The change in internal energy of the system is given by the equation:
Change in internal energy = Heat input - Work done
Substituting the given values, we have:
Change in internal energy = 500 J - 300 J
Change in internal energy = 200 J
To find the final internal energy, we need to add the change in internal energy to the initial energy of the system. The initial energy is given as 1500 J.
Final internal energy = Initial energy + Change in internal energy
Final internal energy = 1500 J + 200 J
Final internal energy = 1700 J
Therefore, the final internal (thermal) energy of the system is 1700 J.
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according to pe = mgh, gravitational potential energy is the same thing as
The equation PE = mgh relates gravitational potential energy to mass, acceleration due to gravity, and height, gravitational potential energy itself is a distinct concept representing the energy associated with an object's position in a gravitational field.
According to the equation PE = mgh, gravitational potential energy (PE) is the product of mass (m), acceleration due to gravity (g), and height (h). However, gravitational potential energy is not the same thing as any of these individual quantities.
Gravitational potential energy refers to the energy possessed by an object due to its position in a gravitational field. It represents the potential for the object to do work when it is released and allowed to fall or move under the influence of gravity.
Mass (m) represents the amount of matter an object contains, acceleration due to gravity (g) represents the strength of the gravitational field, and height (h) represents the vertical distance from a reference point to the object. These quantities are used together in the equation to calculate the gravitational potential energy of the object.
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IS
Find the components to write this
vector in unit vector notation:
BR
12.0
45.0⁰
B = [? ]î+ [? ]
The vector BR in unit vector notation is:
BR = 8.485 î + 8.485 j
What is Vector?
Vectors can be added together to find the result, which is known as the vector sum. The vector sum can be found using the head-to-tail method, where the tail of one vector is placed at the head of the other vector. The vector sum is the vector that goes from the tail of the first vector to the head of the second vector.
To write the vector BR in unit vector notation, we need to find its components in the i and j directions.
Given that the magnitude of the vector is 12.0 and it makes an angle of 45 degrees with the positive x-axis, we can use trigonometry to find the components.
The x-component (i-direction) of the vector is given by:
Bx = B cos θ = 12.0 cos 45° = 8.485
The y-component (j-direction) of the vector is given by:
By = B sin θ = 12.0 sin 45° = 8.485
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A drunk college student decides to try to do a perfect swan dive from his apartment window into the pool below. The edge of the pool is 5 meters from the base of the building and his window is on the 3rd floor, which is 8 meters from the ground. If he jumps out the window horizontally at a speed of 4 m/s, does he make it into the water or..
Answer:
He barely makes it but hit his leg on the pool edge.
Explanation:
Using kinematic formula: Δx=\(v_{0}t+(1/2)at^2\)
We can plug in delta x, v zero, and acceleration.
delta x = 8 meters, v0 = 0. a = 9.8
8=(1/2)9.8*t^2
Around 1.278 seconds of airtime.
4 * 1.278 = 5.112 meters horizontally assuming no air resistance
That was close!
Which unit of electricity expresses the volume of electron movement in a circuit?
Answer:
Ampere
Explanation:
This is the current unit of the circuit ....
What is the bandwidth (in hz) of a system with the frequency response that follows?
The bandwidth of a system is the difference between the highest and lowest frequencies in the system's frequency response.
In order to determine the bandwidth of the system in question, we need to know the highest and lowest frequencies in the frequency response.
If the frequency response is given in a graph or table, you can find the highest and lowest frequencies by looking at the x-axis values. The highest frequency will be the largest x-axis value, and the lowest frequency will be the smallest x-axis value.
Once you have the highest and lowest frequencies, you can calculate the bandwidth by subtracting the lowest frequency from the highest frequency. For example, if the highest frequency is 1000 Hz and the lowest frequency is 100 Hz, the bandwidth would be 900 Hz (1000 Hz - 100 Hz = 900 Hz).
Without the frequency response information, it is not possible to accurately determine the bandwidth of the system.
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Two balls are released from the same height on the moon. They both reach the ground at the same time. Which statement is correct about the two balls
Answer:
same acceleration
Explanation:
Please HURRY
particles q_1 = -8.99uc, q_2 = +5.16uc, and q_3=-89.9uc are in a line. particles q_1 and q_2 are separated by 0.220m and particles q_ 2 and q_3 are separated by 0.330m. what is the net force on particles q_1?
According to the question the net force on particle q1 is \(1.45 * 10^-4 N.\)
What is force?Force is an influence that produces a change in the motion, direction, shape, or orientation of an object. It is a vector quantity, meaning it has both magnitude and direction. Force can be derived from different sources, including physical contact, gravity, magnetism, or even electrical fields. Force affects objects by producing acceleration, deceleration, or changes in direction.
The net force on particle q1 is the sum of the forces due to the two other particles. The force on particle q1 due to particle q2 is given by Coulomb's Law:
\(F12 = k(q1q2/r12^2)\)
Where k is the Coulomb's Constant, q1 and q2 are the charges of the two particles, and r12 is the distance between them, which is 0.220m.
Similarly, the force on particle q1 due to particle q3 is given by:
\(F13 = k(q1q3/r13^2)\)
Where q1 and q3 are the charges of the two particles, and r13 is the distance between them, which is 0.330m.
The net force on particle q1 is then the vector sum of these two forces:
Fnet = F12 + F13
Substituting the values for the charges and distances into Coulomb's Law gives:
\(Fnet = (9*10^9)(-(8.99*10^-6)(5.16*10^-6)/(0.22^2)) + (9*10^9)(-(8.99*10^-6)(-89.9*10^-6)/(0.33^2))\)
Simplifying, we get
\(Fnet = 1.45 * 10^-4 N\)
Therefore, the net force on particle q1 is\(1.45 * 10^-4 N.\)
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