Answer:
Explanation:
distance between two crests = 8 m
The distance between the two crests is called wavelength.
So, wavelength, λ = 8 m
frequency = 2 Hz
Let v be the velocity of wave.
v = f x λ
v = 2 x 8
v = 16 m/s
Power rating = volts x amps
Power rating = 7.5 x 120 = 900 watts
Answer: 900 watts
Answer:
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Explanation:
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Answer:
The increase in the gravitational potential energy is 29.93 joules.
Explanation:
Given that,
Mass of the box, m = 2.35 kg
It is lifted from the floor to a tabletop 1.30 m above the floor, h = 1.3 m
We need to find the increase the gravitational potential energy. Initial it will placed at ground i.e. its initial gravitational potential is equal to 0. The increase in the gravitational potential energy is given by :


U = 29.93 Joules
So, the increase in the gravitational potential energy is 29.93 joules. Hence, this is the required solution.
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