Answer:
Hans Lipperhey
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Answer:
Its state is in uniformly accelerated motion
Explanation:
When an object is acted upon the force of gravity only, we said that the object is in free fall.
According to Newton's second law of motion:
![F=ma](https://tex.z-dn.net/?f=F%3Dma)
where F is the net force on an object, m is its mass, a its acceleration, when the net force on an object (F) is non-zero, than the object accelerates (because a is non-zero), so the object is in accelerated motion.
In case of free fall, the rate of acceleration of the object is equal to
, the acceleration due to gravity, and it is constant. So, the object is moving by uniformly accelerated motion.
When calculated energy transferred between objects use the definition of heat as
Answer:
The wave produced is a standing wave.
y' = [2ymax - kx] cos wt.
y max is maximum displacement, k is angular wave number, x is equal to the length L, w is angular frequency, t is time.
The time taken for the wave to travel to the ceiling and get reflected is given as:
t = 1/f = (2L)/nv. Where n =, 1,2,3, .... and v is wave speed, f is wave frequency.
Answer: 2933 kg
Explanation:
Given
From the law of conservation of linear momentum, we know that
m(i)v(i) = m(f)v(f), where there is no external force acting on the system
m(i) = initial mass of the freight car system
m(f) = maximum mass of the freight car system
v(i) = initial linear velocity of the system
v(f) = final linear velocity of the system
2000 * 4.4 = m(f) * 3
3m(f) = 8800
m(f) = 8800 / 3
m(f) = 2933.3 kg
Therefore the maximum mass of grain that it can accept is 2933 kg