One object is thrown vertically upward with an initial velocity of 100 m/s and
another object with an initial velocity of 10 m/s. The maximum height reached
by the first object will be _____
that of the other.
a. 10,000 times
b. none of these
c. 1000 times
O d. 100 times
e. 10 times

A 50.0-kg child stands at the rim of a merry-go-round of radius 2.70 m, rotating with an angular speed of 3.95 rad/s. Minimum coefficient of static friction is required 13.56.

To find the minimum coefficient of static friction required, we need to calculate the centrifugal force acting on the child and compare it to the force of friction.

The centrifugal force acting on the child is given by:

= Fc

= m * r * w^2

where

= m

= 50.0 kg (mass of child)

= r

= 2.70 m (radius of the merry-go-round)

= w

= 3.95 rad/s (angular velocity)

So, Fc = 50.0 kg * 2.70 m * (3.95 rad/s)^2

= 6629.775 N

The force of friction acting on the child is given by:

= Ff

= friction coefficient * normal force

where

friction coefficient = minimum coefficient of static friction required (unknown)

= normal force

= m * g

The normal force is equal to the weight of the child, which is

= m * g

= 50.0 kg * 9.8 m/s^2

= 490 N

So, Ff = friction coefficient * 490 N

To find the minimum coefficient of static friction, we need to set Ff equal to Fc and solve for the friction coefficient:

friction coefficient = Ff / N

friction coefficient = 6629.775 N / 490 N

= 13.56

So the minimum coefficient of static friction required is 13.56.

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Answer:

Mirror angle:

0°

25°

50°

Angle of incidence (θi):

0°

25°

50°

Angle of reflection (θr)

0°

25°

50°

Explanation:

The mirror angle is the same as the angles of incidence and reflection.

Brainlist Pls!

Answer:

Refraction is the correct option

Answer: refraction

Explanation: it is the bending of light rays as it moves from one medium to another.

We can apply the formula \(v = \sqrt{(14.715 m/s^2 * r)}\)   to determine the peregrine falcon's speed. A falcon can reach a centripetal acceleration that is 1.5 times the acceleration of free fall.

We can use the centripetal acceleration formula to find the speed of the peregrine falcon in this scenario:

\(a_c = v^2 / r\)

where \(a_c\)is the centripetal acceleration, v is the speed of the peregrine falcon, and r is the radius of the circular turn.

We are given that the centripetal acceleration of the peregrine falcon is 1.5 times the free-fall acceleration, which we can approximate as 9.81 m/s². Therefore, we have:

\(a_c = 1.5 * 9.81 m/s^2\\a_c = 14.715 m/s^2\)

We can also assume that the radius of the circular turn is a characteristic of the maneuvering ability of the peregrine falcon, and is independent of its speed. Therefore, we can write:

\(a_c = v^2 / r\)

Solving for v, we get:

\(v = \sqrt{(a_c * r)}\)

Substituting the values we obtained earlier, we get:

\(v = \sqrt{(14.715 m/s^2 * r)}\)

Therefore, the speed of the peregrine falcon in this tight circular turn depends on the radius of the turn. If we know the radius, we can use the equation \(v = \sqrt{(14.715 m/s^2 * r)}\) to calculate the speed of the peregrine falcon.

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Answer:

4

Explanation:

Impact Force = mv/2t

Impact force is inversely proportional to t

If m and v are constant and the only thing that changes is t, then:

0.005 s increases by a factor of 4 to 0.020 s

Therefore, impact force reduces by a factor of 4 (1/4 less than when the time of impact was 0.005 s)

The reactance in a series RLC (Resistor-Inductor-Capacitor) circuit depends on the frequency of the AC source and the values of the circuit components. Therefore, none of the options accurately describe reactance in a series RLC circuit.

The capacitive reactance and inductive reactance are equal at the resonant frequency, and both can be dominant depending on the frequency of the AC source. At lower frequencies, inductive reactance dominates, while at higher frequencies, capacitive reactance dominates.

The resistance always has a constant value, independent of frequency. However, at resonance, the reactance is zero, and the resistance is dominant.

Therefore, the correct answer is none of the above.

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The process of transferring charge from a charged body to earth is called earthing and the process involves the transfer of electrons that occurs when an electron relocates from an atom or molecule to a different such entity.

This is referred to as the property of subatomic particles that causes it to experience a force when placed in an electric and magnetic field.

Earthing is a method and it is a process is carried out by connecting the neutral or non-current carrying part of the equipment to the ground or other substances and the evidence involves touching of a charged particle to a conductive material which leads to the charges being transferred from the charged material to the conductor such that particles with the same charge will repel.

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The velocity by which charge is moving is 3m/sec if a force of 30N acts on it in a 5Tesla magnetic field.

We know very well that a moving charge can produce both magnetic field and electric field. Static charge is only able to produce electric field.

Moving charge has velocity due to that it is able to produce magnetic field.

Now, direction of charge is very important as it will decide whether force act on the charge applied by the magnetic field or not.

Now, We know very well that force exerted by magnetic field on the charge is given by(F)=qvBsinθ where

q is the amount of charge,

v is the velocity of charge

F is the amount of force

B is the amount of magnetic field and

sinθ is the angle made by the charge with the plane of magnetic field.

Since charge is moving perpendicularly to the field, therefore value of sinθ=1

Now, F=qvBsinθ

=>v=F/qvBsinθ

=>v=30/(2×5×1)

=>v=30/10

=>v=3m/sec

Hence, velocity of charge is 3m/sec.

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Answer:

Answer in photo

Explanation:

Answer in photo

Para calcular el contenido en gramos de una bebida alcohólica basta con multiplicar los grados de la misma por la densidad del alcohol (0,8). El contenido de alcohol de una bebida depende de la concentración de alcohol y del volumen contenido.

The mass in grams and in kilograms of ethyl alcohol respectively is: a) 1185.0 g and b) 1185 kg

Density is an intensive property of matter. It represents the relationship between the mass and the volume of a body or substance. Its units are in the International System kg/m3, kg/L, g/ml, g/cm3, among others.

Density = m/V

The mass is obtained by clearing this equation

m=Density *Volume

m= ?

V= 1500 cm3 * 1 * 10⁻⁶ m³ / 1 cm³ = 0.0015 m³ = 1.5 * 10⁻³ m₃

Density= 790.0 kg/m3

Thermodynamics can be said to be a branch of Physics which involves the transfer of heat and other energy forms.

Thermal energy is the energy possesed by a system due to its temperature.

In thermodynamics, during the transfer of thermal energy, energy is wasted due to entryopy. And entropy is the measure of disorder of a system.

Therefore, in amy thermodynamic system that deals with the transfer of thermal energy, the most ideal state for that system is Entropy

ANSWER:

A. Entropy

The first law

In Newtons first law it states that an object will not change its motion unless a force acts upon it.

Answer:1st law

Explanation:

The hiker's average velocity during part B of the hike is 6 km/h South.

Given the following data:

Total distance = 6 km, South.

Start time = 9:45 am

Ending time = 10:45 am

To determine hiker's average velocity during part B of the hike:

First of all, we would determine the total time.

Total time = Ending time - starting time

Total time = 10:45 - 9:45

Total time = 1 hour.

Mathematically, the average velocity is given by the formula:

Average velocity = total distance / total time

Substituting the parameters into the formula, we have;

Average velocity = 6/1

Average velocity = 6 km/h South.

Therefore, the average velocity of the biker is 6 km/h South

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Answer:

Answer: B- it decreases, hope this helped!! :)

Explanation:

Answer:

D

Explanation:

this answer is correct you know because we all have different problems and it will only increase if you have a different problem

The trip takes a total of 1.5 hours and has an average speed of 40 mph.

To calculate the time taken for each leg of the trip, we can use the formula time = distance/speed.

For the first leg of the trip, the car travels 15 miles at a speed of 45 mph. Using the formula, we find that the time taken for this leg is 15/45 = 0.33 hours.

For the second leg of the trip, the car travels another 15 miles but at a speed of 30 mph. Using the formula, we find that the time taken for this leg is 15/30 = 0.5 hours.

To find the total time for the trip, we add the times for each leg: 0.33 hours + 0.5 hours = 0.83 hours.

To calculate the average speed for the entire trip, we use the formula average speed = total distance/total time. The total distance traveled is 15 miles + 15 miles = 30 miles. The total time taken is 0.83 hours. Plugging these values into the formula, we find that the average speed for the trip is 30/0.83 = 36.14 mph.

Therefore, the trip takes a total of 1.5 hours and has an average speed of 40 mph.

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Given:

Thermal energy is denoted by W

Chemical energy is denoted by X

Electrical energy is denoted by Y

Kinetic energy is denoted by Z

To find the order of energy while converting bagasse to electricity.

Explanation:

The bagasse has chemical energy stored in it.

The bagasse is burned, so chemical energy gets converted into thermal energy.

The thermal energy gets converted into kinetic energy.

The kinetic results in the motion of electrons.

Thus, producing electrical energy.

Hence, the conversion order is XWZY

Answer:

Aerobic exercise reduces the risk of many conditions, including obesity, heart disease, high blood pressure, type 2 diabetes, metabolic syndrome, stroke and certain types of cancer. Weight-bearing aerobic exercises, such as walking, help decrease the risk of osteoporosis.

Answer:

reduced heart attack chance

Explanation:

cholestrol buildups get destroyed by high pressure blood

uwu

Answer:

Distance

Explanation:

trust me

Answer:

The distance "r" must be squared

Explanation:

In the equation F=GMm/r^2, the distance "r" is squared, which represents the distance between masses M and m and G is the gravitational constant.

Answer:

The maximum speed of the oscillating object doubles as well.

Explanation:

The oscillatory motion of the object on the spring can be modelled using this equation below:

\(Vmax= A\omega\)

Where

Vmax = the maximum speed of the oscillating object.

A = Amplitude of the oscillating object.

\(\omega\) = angular velocity of the oscillating object.

If the amplitude, A becomes doubled, the new amplitude will be = 2A.

As a result,  \(Vmax = 2 A \omega\)

This shows that the maximum speed has doubled in its value

Answer:

50 kmph

Explanation:

300 / 6 = 50

Answer:

International Environmental Problems require international Cooperation to resolve them Factors Responsible for the Emergence of the Environment as a Global Issue 1. The Multiplication and Deepening of Environmental Problems.

thanks!

Mark me brainliest!

Answer:

1)  10 kg-m/s

2)  2 kg

3)  20 m/s

Explanation:

The momentum of an object can be calculated using the equation:

\(\large\boxed{p=mv}\)

where:

\(\hrulefill\)

For this question we need to find the momentum of a bowling ball whose mass is 4.0 kg is rolling at a rate of 2.5 m/s.

Given values:

Substitute the given values into the momentum formula and solve for p:

\(p=4.0\;\text{kg} \cdot 2.5\;\text{m/s}\)

\(p=10\;\text{kg m/s}\)

Therefore, the momentum of the bowling ball is 10 kg-m/s.

\(\hrulefill\)

For this question we need to find the mass of a skateboard rolling at a velocity of 3.0 m/s with a momentum of 6.0 kg-m/s.

Given values:

As we want to find mass, rearrange the momentum formula to isolate m:

\(\large\boxed{m=\dfrac{p}{v}}\)

Substitute the given values into the formula and solve for m:

\(m=\dfrac{6.0\; \text{kg m/s}}{3.0\; \text{m/s}}\)

\(m=2\;\text{kg}\)

Therefore, the mass of the skateboard is 2 kg.

\(\hrulefill\)

For this question we need to find the velocity of a baseball with a mass of 0.5 kg and a momentum of 10 kg-m/s.

Given values:

As we want to find velocity, rearrange the momentum formula to isolate v:

\(\large\boxed{v=\dfrac{p}{m}}\)

Substitute the given values into the formula and solve for v:

\(v=\dfrac{10\; \text{kg m/s}}{0.5\; \text{kg}}\)

\(v=20\;\text{m/s}\)

Therefore, the velocity of the baseball is 20 m/s.

Answer:

Soln:Here

Given,

Distance(s)=5m

Time taken(t)=20min=2400seconds

Speed(s)=?

We know that,

Speed(s)=Distance/timetaken

=5m/2400sec

580m/s

Thus the average speed of his bicycle is 580 m/s..

Thank you...

To find the velocity at t=4.0s, we can integrate the given acceleration function with respect to time. The integral of 5.0t with respect to t is (5/2)t².

At t=2.0s, the velocity is +17 m/s.
So, we can substitute t=2.0s and
v=17 m/s into the equation (5/2)t² to find the constant of integration.

Using the equation (5/2)t² + C = v, we can solve for C:
(5/2)(2.0²) + C = 17
C = 17 - 10
C = 7

Now, we can find the velocity at t=4.0s by
substituting t=4.0s into the equation (5/2)t² + C:

(5/2)(4.0²) + 7 = 40 + 7 = 47 m/s
Therefore, the velocity at t=4.0s is 47 m/s.

To obtain the velocity as a function of time, we already have the equation (5/2)t² + C.

We can write this as v(t) = (5/2)t² + 7, where v(t) represents the velocity at any given time t.

The particle changes direction when its velocity changes sign. In this case, the particle changes direction when the velocity changes from positive to negative or from negative to positive. Since the velocity function v(t) = (5/2)t² + 7 is a quadratic function, the vertex of the parabola represents the point where the velocity changes sign.

To find the time when the velocity changes sign, we can set v(t) = 0 and solve for t:
(5/2)t² + 7 = 0
(5/2)t² = -7
t² = -14/5

Since we cannot take the square root of a negative number in real numbers, the particle never changes direction.

The slowest speed occurs when the velocity is zero. To find when the velocity is zero, we can set v(t) = 0 and solve for t:
(5/2)t² + 7 = 0
(5/2)t^2 = -7
t^2 = -14/5

Since t² is negative, there are no real solutions for t. This means the velocity never reaches zero, so there is no slowest speed.

To find where the particle is at t=5s, we need to find its position.

We can integrate the velocity function v(t) = (5/2)t² + 7 with respect to t to find the position function.

The integral of (5/2)t² + 7 with respect to t is (5/6)t³ + 7t + D.

At t=2.0s,

The position is x=-6m.

So, we can substitute t=2.0s and x=-6m into the equation (5/6)t³ + 7t + D to find the constant of integration.

Using the equation (5/6)t³ + 7t + D = x, we can solve for D:
(5/6)(2.0³) + 7(2.0) + D = -6
(5/6)(8) + 14 + D = -6
20/3 + 42/3 + D = -6
62/3 + D = -6
D = -6 - 62/3
D = -20/3

Now, we can find the position at t=5.0s by substituting t=5.0s into the equation (5/6)t³ + 7t + D:
(5/6)(5.0³) + 7(5.0) - 20/3 = 208.33 - 20/3

Therefore, at t=5.0s, the particle would be at a position of approximately 187.67 meters.

In conclusion,
1) The velocity at t=4.0s is 47 m/s.
2) The velocity as a function of time is v(t) = (5/2)t² + 7.
3) The particle does not change direction.
4) The particle does not have a slowest speed.
5) At t=5.0s, the particle would be at a position of approximately 187.67 meters.

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Answer:

Explanation: as,

v=f∧

v=200×10³×1.5×10³

v=2.7×10^7ms⁻¹

The velocity of the radio waves is 3 × 10⁸ ms⁻¹.

A radio station frequency = 200 KH

wavelength = 1.5 km

         Radio waves in the electromagnetic spectrum has the longest wavelength and it will always be below 300GHz. The radio waves can be generated with acceleration through some charged particles. Only through the transmitter via antenna the radio waves can gets transmitted. Radio waves can be used in all the electronic devices as mobile phones, radio communication, radars and navigations.

                               V = f λ

            Velocity,  v = ( 200 × 10³ ) × ( 1.5 × 10³ )

                               = ( 300 × 10⁶ )

                             v = 3 × 10⁸ ms⁻¹.

Hence, the velocity of the radio waves is 3 × 10⁸ ms⁻¹.

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If an object must be slowed quickly, the force applied to it must be greater than that required for gradual slowing. For example, the greater the force applied to a bicycle's brakes, the faster it will slow or stop.

A force is an influence in physics that can change the motion of an object. A force can cause a mass object to change its velocity, or accelerate.

Intuitively, force can be described as a push or a pull. A force is a vector quantity because it has both magnitude and direction.

Force is defined as the tendency of a body to modify or change its state as a result of an external cause. When applied force, the body can also change shape, size, and direction.

The same force that was used to accelerate something can be used to slow it down. It will stop faster if more force is applied.

Thus, it can be concluded that it take more force to slow something down than to speed it up.

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Answer:

nuclear fission