Answer: W = 3500 J
Explanation: Work is the product of the amount of force and the perpendicular distance or W = Fd.
W = Fd
= 1400 N ( 2.5 m )
= 3500 J
Answer:
Force = 1400N
Displacement = 2.5 m
work done = F×D
=1400×2.5
= 3500 joule
Answer: Radio waves is a type for wave that is used to transmit television and radio programmes, while microwaves can be used for phone communication.
Explanation: Radio waves and microwaves are types of electromagnetic radiation that has the longest wavelengths and the lowest frequency and it carries the least amounts of energy. This causes it to interact with mostly nothing as it travels, therefore it is just easier to transmit information as there is no disturbance in the transmittion.
Answer:
I=8 Nw.s
Explanation:
Impulse
It is a physical magnitude that measures the force applied to an object by the time that force is acting. It produces a change in the momentum of the object, which is expressed in the following formula
We know the bat applies a force on the ball of F=400 N during t=0.02 sec, thus the impulse is
The kitten's velocity is V=0.625 m/s
Explanation:
Solving the problem,
Given
Mass=0.8 kg
Momentum=0.5 kg.m/s
Velocity=?
We have the formula,
P=M*V
V=P/M
V=0.5 kg.m/s/0.8 kg
V=0.625 m/s
The kitten's velocity is V=0.625 m/s