The action spectrum is broader than the absorption spectrum because:_________

The acceleration of the block is 6.4 m/s².

To calculate the acceleration of the block, we need to consider the forces acting on it.

The applied force is 40 N, and since it is the only horizontal force in the direction of motion, it is the net force acting on the block.

The frictional force opposing the motion is 8 N.

The acceleration, we can use Newton's second law, which states that the net force acting on an object is equal to its mass multiplied by its acceleration (F = ma).

The net force is the difference between the applied force and the frictional force:

40 N - 8 N = 32 N.

Now, we can plug the values into Newton's second law:

32 N = 5 kg × a.

Solving for the acceleration (a), we get

a = 32 N / 5 kg

a = 6.4 m/s².

Therefore, the acceleration of the block is 6.4 m/s².

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Answer:

I think ur answer would be B

Explanation:

srry if wrong

hope this helps

Answer:We have seasons because the earth is tilted (wonky) as it makes its yearly journey around the sun. The Earth's axis is tilted at an angle of 23.5 degrees. This means that the Earth is always "pointing" to one side as it goes around the Sun.

Explanation:

got this from the internet

Answer:

B. heat and kinetic energy

Explanation:

Heat is a form of energy that flows with respect to temperature difference. Thus, heat energy would flow from an object with higher temperature to that at lower temperature. It generally cascades from a high temperature body to lower temperature body through a medium or when in contact.

Kinetic energy is the energy that is inherent in a moving object. Thus, it can be converted to other forms or transferred between objects. Example, a moving object can transfer part of its kinetic energy to an object at rest on collision. This may cause the motion of the initial stationary object.

Therefore, heat and kinetic energy can be used to describe transfer of energy to or from a substance.

If you press on the plunger, you increase the pressure of the air, and thus the air in the small syringe escapes out, and hens the large syringe gets expanded.

Also the colored water gets filled inside the larger syringe.

the total charge passing a given point in the conductor \(12000\pi C\)

What is charge ?

In physics, rate, additionally called electric powered rate, electric rate, or electrostatic rate and symbolized q, is a feature of a unit of count number that expresses the quantity to which it has greater or fewer electrons than protons. In atoms, the electron incorporates a poor fundamental or unit rate; the proton incorporates a fine rate. The varieties of rate are identical and opposite.

Given

I = \(100sin (120 \pi t )\)

t = 0 to t = 1/240s

d Q = I dT = \(100sin (120 \pi t ) dt\)

Q = \(100*120\pi\)

Q = \(12000\pi C\)

the total charge passing a given point in the conductor \(12000\pi C\)

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A. Total momentum in a closed system is conserved

the law of momentum conservation states that The total amount of momentum before the collision is the same as the total momentum after the collision. Regardless of the change of momentum of each object.

Given,

The current, I=0.25 A

The total charge flowing in the circuit is q=6812 C.

The electric current can be defined as the time rate of flow of the charges.

Thus, the electric current is given by,

Where t is the time duration.

Thus the batteries will fry out after 27248 s

Answer:x rays are electromagnetic waves.

x rays are transverse waves

x rays travel at the speed of light

Explanation:

Answer:

It would depend on the amount of years.

Explanation:

I don’t think this is very helpful-

Have a great day!

Anygays-

Answer:

F = 600N

Explanation:

F = m x a

F = Force

m = mass

a = acceleration

F = 0.14 x 600 = 84N

The gradient of River X expressed in m/km is 20 m/km.

Any line or curve's gradient will reveal the pace at which one variable is changing in relation to another. In all mathematical fields, this idea is crucial.

By dividing the difference between the -coordinates by the difference between the -coordinates, the gradient of a line is calculated. This can also be referred to as the vertical divided by the horizontal or the change in divided by the change in.

A river's gradient is a measurement of how steeply it declines over a specific distance.

Gradient = vertical change / horizontal distance = 20 meters / 1 kilometer = 20 m/km

Therefore, the gradient of River X expressed in m/km is 20 m/km.

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Answer:

h = 0.25 [m]

v = 3.26 [m/s]

Explanation:

In order to solve this problem, we must remember that mechanical energy is defined as the sum of kinetic energy plus potential energy.

E1 = Ek + Ep

where:

E1 = mechanical energy = 25 [J]

Ek = kinetic energy = 17 [J]

Ep = potential energy [J]

25 = 17 + Ep

Ep = 8 [J]

Now the potential energy is defined by the following equation:

Ep = m*g*h

where:

m = mass = 3.2 [kg]

g = gravity acceleration = 9.81 [m/s²]

h = elevation [m]

8 = 3.2*9.81*h

h = 0.25 [m]

The velocity can be calculated by means of kinetic energy.

\(E_{k} =\frac{1}{2} *m*v^{2}\\17 =\frac{1}{2} *3.2*v^{2} \\v= \sqrt{\frac{17*2}{3.2} }\\v = 3.26[m/s]\)

(a) The height of the ball will be h=0.25 m

(b) The speed of the ball will be \(V= 3.26\ \frac{m}{s}\)

It is given that

Mass of the ball m=-3.2kg

The kinetic energy of the ball = 17 j

The total mechanical energy of the ball = 25 J

(a) So the total mechanical energy is the sum of the kinetic energy of the ball and the potential energy of the ball.

\(E_T=E_{KE}+E_{PE}\)

Now putting the values of the KE and the Total energy we get

\(25=17+E_{PE}\)

\(E_{PE}=8 \ J\)

Now the formula of the potential energy will be

\(E_{PE}=mgh\)

\(8=3.2\times 9.81 \times h\)

\(h= \dfrac{8}{3.2\times 9.81}\)

\(h=0.25\ m\)

(b) Now to find out the speed of the ball we have

\(E_K=17\ J\)

\(E_K=\dfrac{1}{2} mv^2\)

\(v=\sqrt{\dfrac{2E_{KE}}{m} }\)

\(v=\sqrt{ \dfrac{2\times17}{3.2} }=3.25\)

\(v=3.25 \ \dfrac{m}{s}\)

So the calculated answers will be

(a) The height of the ball will be h=0.25 m

(b) The speed of the ball will be \(V= 3.26\ \frac{m}{s}\)

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Answer: Is in the image

Answer:

ch3sh + 4O2 are the products

Answer:

f =-20 cm

Explanation:

Given that,

The magnification of a spherical mirror, m = -1

The image distance, v = 40 cm (for negative magnification)

The magnification of a concave mirror is negative. The mirror showing -1 magnification is a concave mirror.

Let f be the focal length of the mirror. We know that,

\(m=\dfrac{-v}{u}\\\\-1=\dfrac{-v}{u}\\\\v=u\)

Object distance, u = -40 cm

Using mirror's formula i.e.

\(\dfrac{1}{f}=\dfrac{1}{u}+\dfrac{1}{v}\\\\f=\dfrac{1}{\dfrac{1}{-40}+\dfrac{1}{-40}}\\\\f=-20\ cm\)

So, the focal length of the mirror is 20 cm.

Answer:

the density is 2.7

Explanation:

p=m/v

p=density

m=mass

v=volume

p=m/v

Answer:

\(given \\ accelaration (a)= 2.5 \frac{m}{ {s}^{2} } \\ initial \: velocity(u) = 21 \frac{m}{s} \\ final \: velocity(v) = 31 \frac{m}{s} \\ we \: want \: find \: time \\ newtons \: equation \: of \: motion \: v = u + at \\ 31 = 21 + 2.5 \times t \\ 31 - 21 = 2.5t \\ 10 = 2.5t \\ \frac{10}{2.5} = t \\ t = 4sec\)

Answer:

The potential difference at the customer's house is 117.1 V.

Explanation:

a) The potential difference at the customer's house can be calculated as follows:

\( \Delta V_{h} = \Delta V_{p} - \Delta V_{l} \)

Where:

\(V_{h}\): is the potential difference at the customer's house

\(V_{p}\): is the potential difference from the main power lines = 120 V

\(V_{l}\): is the potential difference from the lines

\( \Delta V_{h} = \Delta V_{p} - IR \)

The resistance, R, is:

\(\frac{0.109 \Omega}{300 m}*2*34.0 m = 0.025 \Omega\)

Now, the potential difference at the customer's house is:

\(\Delta V_{h} = 120 V - 116A*0.025 \Omega = 117.1 V\)

Therefore, the potential difference at the customer's house is 117.1 V.

I hope it helps you!

The angle of refraction is approximately 35.2 degrees. The ratio of the speed of light in B to the speed of light in A is 0.8. The ratio of the frequency of light in B to the frequency of light in A is also 0.8.

When light passes from one medium to another, its direction and speed change due to the difference in refractive indices between the two mediums. In this case, the angle of incidence is given as 45 degrees, and the refractive index of medium A is 1.25 times that of medium B.

The angle of refraction can be determined using Snell's law, which states that the ratio of the sines of the angles of incidence and refraction is equal to the ratio of the refractive indices of the two mediums. By substituting the given values, we find that the angle of refraction is approximately 35.2 degrees.

The ratio of the speed of light in medium B to the speed of light in medium A can be calculated by taking the reciprocal of the refractive index ratio. In this case, the ratio is 1/1.25, which simplifies to 0.8. This means that light travels approximately 0.8 times faster in medium B compared to medium A.

Similarly, the frequency of light is inversely proportional to the speed of light. Therefore, the ratio of the frequency of light in medium B to the frequency in medium A is also 0.8.

To determine the critical angle for total internal reflection, we need to find the angle of incidence at which the angle of refraction becomes 90 degrees. This occurs when the sine of the angle of incidence is equal to the reciprocal of the refractive index ratio. In this case, the critical angle would be approximately 48.6 degrees.

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Answer:

\(fr = \frac{9 \times 10 {}^{9} \times 3 \times 4}{2 {}^{2} } \\ fr = 27 \times 10 {}^{9} n\)

Answer:

6.0 m/s vertical and 9.0 m/s horizontal

Explanation:

For the vertical component, we use the formula:

Then we solve for y:

And for the horizontal component, we use the formula:

Then we solve for x:

So the answer is " 6.0 m/s vertical and 9.0 m/s horizontal".

A

Mercury has the least substantial atmosphere among the given planets.

Mercury, the closest planet to the Sun, has a very thin and tenuous atmosphere. Its atmosphere consists mainly of atoms and molecules that have been blasted off its surface by the solar wind, rather than being generated from internal processes like on Earth. The atmosphere on Mercury is extremely sparse, with a surface pressure about 1 trillion times lower than Earth's atmospheric pressure.

Due to its weak gravitational pull, Mercury is unable to retain a significant atmosphere compared to other planets in the list.Among the given options, Mercury has the least substantial atmosphere

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Hi There!!

In physics, the concept of a frame of reference is used to specify the perspective from which an object or event is observed.

1). A frame of reference is where the measurements or observations will be made. Because of this, observing an event may be different when changing from one frame of reference to another, because the measurements will be different.

2). Defining frames of reference is necessary because the movement is relative, it may be that from our perspective or from a frame of reference on earth we are at rest, but seen from a frame of reference in space, we are in motion due that the earth is always moving.

3). Another example of frames of reference is a moving plane. Seen from the ground an object in the plane moves at the speed at which the plane travels, but if the frame of reference is fixed on the plane, the object is at rest.

Hope This Helps!!

\(Loserbrazts\) ༼ つ ◕_◕ ༽つ

The mass of the object that has a density of 15g/cm³ and a volume of 3cm³ is 45g.

The density of a substance is the measure of the mass of matter contained by a unit volume. It can be calculated as follows:

Density = mass ÷ volume

This means that the mass can be calculated by multiplying the volume by the density of the substance.

According to this question, an object has a density of 15g/cm³ and a volume of 3cm³. The mass can be calculated as follows:

Mass = 3cm³ × 15g/cm³

Mass = 45g

Therefore, 45 grams is the mass of the object.

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The answer is True. The conservation of charge, or Kirchhoff's current law, stipulates that the total current entering and leaving a junction in an electrical circuit must equal each other.

Kirchhoff's current law asserts that the algebraic sum of currents at any junction point (or node) in an electrical circuit is always zero, often known as the junction rule or the first law. This law is founded on the idea that charge cannot be created or destroyed, which is known as the conservation of charge. Any current that enters a junction must therefore be balanced by an equivalent current that exits the junction. By using current relationships at various nodes, this law serves as the basis for understanding and resolving complex electrical circuits. It is a cornerstone of circuit analysis and is frequently applied in physics and electrical engineering.

The algebraic sum of currents entering every junction point (or node) in an electrical circuit must match the algebraic sum of currents exiting that junction, according to Kirchhoff's current law, sometimes referred to as the junction rule or Kirchhoff's first law. Alternatively said, the total current entering a node equals the total current leaving it. This law is based on the concept of conservation of charge, which holds that electric charge can only be moved from one place to another and cannot be created or destroyed. The entire amount of charge entering a junction must match the total amount of charge exiting that junction since electrons carry charge through a circuit.

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\( = \sf \frac{1}{2} m {v}^{2} \)

\( \sf = \frac{2.4J}{9.6J} \\ \sf= \frac{24}{96} = \frac{1}{4} \\ \sf = 1 : 4\)

Answer:

The kinetic energies of the bullets are 2.4 J and 9.6 J.

The bullet having greater velocity has more kinetic energy.

The ratio of their kinetic energies is 1 : 4.

Hope you could get an idea from here

Doubt clarification - use comment section.

The kinetic energy of the two bullets are 2.4 J and 9.6 J respectively.

The ratio of the kinetic energy of the bullets is 1:4.

The kinetic energy of an object is the energy possessed by the object due to its motion.

The kinetic energy of the two bullets is calculated as follows;

\(K.E_1 = \frac{1}{2} \times 0.003 \times 40^2 = 2.4 \ J\\\\K.E_2 = \frac{1}{2} \times 0.003 \times 80^2 = 9.6 \ J\)

Ratio of the kinetic energy of the bullets is calculated as follows;

\(K.E_1 : K.E_2 = 2.4: 9.6 \ = \ 1: 4\)

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Answer:

The collision is inelastic

Explanation:

There are two kinds of collision; elastic collision and inelastic collision. In an elastic collision, both momentum and kinetic energy are conserved.

However, in an inelastic collision, kinetic energy is not conserved. So, when the bumper of two cars collide, the cars come to a stop because the collision is inelastic.

Answer:75 percent

Explanation:so in order tro fin d thge efficiency i used the forumla ,efficency=useful output energy/input energyx100%,in order to use this formula i needed the output,which i found by subtracting the input energy with wasted energy,that gave me the output,and after founding the output,i put that into the formula,

output energy=input energy - wasted energy

output energy=6000j-1500j

output energy=4500

put that into the formula

efficiency =output energy/input enrgy x100%

efficiency=4500/6000 multiplied by 100%

efficiency=0.75x100%

efficiency=75%