Answer:
Part a)
change in potential energy is given as

Part B)
angular speed of the rod is given as

Part c)
Linear speed of the end of the rod is given as

Part d)
when a particle falls from rest to distance d = 1 m

Explanation:
Part A)
As we know that the gravitational potential energy change is given as



Part B)
As we know that change in gravitational energy is equal to gain in kinetic energy
so we have




Part c)
Linear speed of the end of the rod is given as


Part d)
when a particle falls from rest to distance d = 1 m
so we will have



It would be the 2nd one because the higher the farther away from the equator. <span />
Answer:
48 m
Explanation:
As she travels at the rate of 5m/s due north, the amount of time it would take for her to cross the 80m wide river would be
t = 80 / 5 = 16 seconds
This is also the time it takes for the river to push her to the east side at the rate of 3m/s. So after 16 seconds, she would reach the opposite point at a horizontal distance from her starting of
s = 16*3 = 48 m
Answer:
377 m
Explanation:
number of turns, N = 65
θ = 36°
B1 = 200 micro Tesla
B2 = 600 micro tesla
t = 0.4 s
induced emf, e = 80 mV
Let a be the side of the square coil.



a = 1.45 m
Total length of the wire, L = N x 4a = 65 x 4 x 1.45 = 377 m
Thus, the length of the wire is 377 m.
Answer:
The sample is most likely gaining thermal energy
Explanation: