Answer:106560 N
Explanation:
Given
Let Tension between 2 and 3 car be 
and between 3 &4 is 
mass of freight car =37,000 kg
acceleration of car
is accelerating all freights behind 3
therefore
Thus
Answer: Experimental design means creating a set of procedures to test a hypothesis. A good experimental design requires a strong understanding of the system you are studying. By first considering the variables and how they are related ( Step 1 ), you can make predictions that are specific and testable
Explanation:
A hypothesis (plural hypotheses) is a proposed explanation for a phenomenon. For a hypothesis to be a scientific hypothesis, the scientific method requires that one can test it. Scientists generally base scientific hypotheses on previous observations that cannot satisfactorily be explained with the available scientific theories. Even though the words "hypothesis" and "theory" are often used interchangeably, a scientific hypothesis is not the same as a scientific theory. A working hypothesis is a provisionally accepted hypothesis proposed for further research, in a process beginning with an educated guess or thought.
Answer:
Explanation:
First of all, we need to find the initial wavelength of the photon.
We know that its energy is
So its wavelength is given by:
The formula for the Compton scattering is:
where
is the original wavelength
h is the Planck constant
m is the electron mass
c is the speed of light
is the angle of the scattered photon
Substituting, we find
Answer:
78.4 J
Explanation:
The gravitational potential energy of an object is the energy possessed by the object due to its location in the gravitational field.
The change in gravitational potential energy of an object is given by:
where:
m is the mass of the object
is the acceleration due to gravity
is the change in height of the object
For the mass in this problem, we have:
m = 2 kg is the mass
is the change in height
So, its change in gravitational energy is:
Answer:
Explanation:
The formula to find Potential Energy is PE = mgh, where m is the mass of the object, g is gravity, and h is the height from which the object can potentially fall. Because this is linear, then PE will increase as either the mass or the height increase (gravity is constant at 9.8 m/s/s). If the mass of the ball being dropped doesn't change, then the only thing that determines this ball's max PE is the height from which it is dropped; max PE ALWAYS occurs at the highest point from which an object can potentially fall. So your answer is "At the top".
