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☆☆☆☆☆Cards in this guide (16)
What is nuclear energy
Nuclear energy is the energy in the nucleus, or core, of an atom. Atoms are tiny units that make up all matter in the universe. Energy is what holds the nucleus together. There is a huge amount of power in an atom's dense nucleus. Nuclear energy is seen when nuclear fusions or fissions happen.
How can you identify a fixed pulley
It is set in one position and cannot move.
apex :)
If it takes 100 N to move a box 5 meters what is the work done on the box
500
Momentum is defined as the rate at which work is done
false
A soccer player sprinting down the field demonstrates which form of energy
kinetic
Choose all of the terms that are appropriate for a situation that produces work
the object moves
a force acts
apex:0
What the the two main states of mechanical energy
Potential energy and Kinetic energy
Inclined plane makes work easier by increasing the distance and decreasing the
force
It takes 200 N to move a box 10 meters in 8 seconds How much power is required
250 W
What is an example of conditions not producing work
the momentum must be greater than the force . the force may be very large
How much work must be done on a 5 kg snowboard to increase its speed from 2 ms to 4 ms
work=mass*speed,5*2=10
In a collision a vehicle that rebounds off the object it trikes experiences less force than if it crumples assuming the time is the same in both situations
false
If the force moving an object points at least partially in the opposite direction of the object's motion what is the work considered to be
negative
Is it true that a nonconservative force does the same work regardless of the path taken
: FALSE
Which of the following items does not use a wheel and axle (Apex)
a bicycle
Which of the following is considered to be a conservative force
Air resistance
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