Work is equal to force × distance, so the one that contains those describe work.
lifting 1kg of mass 1m is describing an upwards force and a distance if 1m, so that's the best answer
Answer: If a force on an object is aimed in the direction of the object’s velocity, the force does positive work
(b).
Explanation:
Hi, the answer is oprion b. positive work.
If a force on an object is aimed in the direction of the object’s velocity, the force does positive work.
An object's kinetic energy will only change if the force acting on the object changes the object's speed. This will only happen if there is a component of the force in the direction that the object moves.
So, A force will do work only if the force has a component in the direction that the object moves.
Please give us the picture and tell us what quantity you're asked to find.
Units is the correct answer
Answer:
a. E=1440KJ
b. E=360KJ
c. E=1.8 J
Explanation:
I have the power (Watts) is expressed as Energy (Joules) / Time (seconds), also I have to
so, for the lightbulb
Analogously, for the microwave
Now, I have to express the efficiency as Heat energy / power * 100 so
Done
