A barge floating in fresh water (rho = 1000 kg/m3) is shaped like a hollow rectangular prism with base area A = 550 m2 and heigh
1 answer:
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Answer:
a= 1.81 m/s²
Explanation:
Ratio of the weights on both surfaces can be calculated as,
=
Here;
Wa is the weight on the asteroid, is weight on earth,
m is mass of pack, a is acceleration due to an asteroid and
g is acceleration due to gravity.
Rearrange above equation for a,
a=g ()
Substitute 3.24 N for Wa, 17.5 N for ,
9.81 m/s² for g in the above equation,
a= 9.81()
a= 1.81 m/s²
Explanation:
Given that,
Radius of the circular loop, r = 3.5 cm = 0.035 m
(a) During a 0.12-s time interval, the magnitude of the field increases uniformly from 0.2 T to 0.5 T. Due to the change in the magnetic field, an emf will induced in it. The magnitude of induced emf is given by :
So, the magnitude of the emf induced in the loop during the time interval is .
(b) The negative sign shows that the direction of induced emf in the loop is in anitclockwise direction.
Answer:
t = T/4
Explanation:
The power delivered to the mass by the spring is work done by the spring per second.
The work done by the spring is equal to the elastic potential energy stored in the spring.
The maximum energy stored in the spring is at the amplitude of the oscillation.
So the first time the mass reaches to its amplitude can be found by the following equation of motion:
When the mass reaches the amplitude:
because cos(π) = 1.
Using ω = 2π/T,