Answer:
A, C and D
Explanation:
The impulse is defined as the product between the force (F) and the time of the collision (t):
Let's apply the formula to calculate the impulse for each situation:
A)
B)
C)
D)
We see that the situations in which the impulse is equal to 10 units are:
A, C and D
Answer:
t = 0.25 seconds
Explanation:
Given that,
Initial speed of a bullet, v = 800 m/s
Distance from the target is 200 m
We need to find the time required for the bullet to reach the target. Time is simply calculated by the definition of velocity i.e.
So, it will take 0.25 seconds to reach the target.
Answer:
<h2>7.5 kg</h2>Explanation:
The mass of the train can be found by using the formula
k is the kinetic energy
v is the velocity
From the question we have
We have the final answer as
<h3>7.5 kg</h3>Hope this helps you
From the calculation, the wavelength of the waves is about 264 nm and belongs to the ultraviolet spectrum.
<h3>What is photoelectric effect?</h3>The term photoelectric effect can be used to describe the loss of electron from the surface of a metal. Given that; KE = E - W, where;
KE = kinetic energy of the emitted photoelectron
E = energy of the photon
W = work function of the metal
λ= hc/E
λ=
λ= or 264 nm
Learn more about wavelength:brainly.com/question/13533093
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