Which of the following is an example of a contact force? A magnet repelling another magnet without touching it A ball falling the ground when it is dropped A child pushing a toy car Gravity keeping the earth in order around the sun

Should your directions to a friend for traveling from one city to another include displacements or distances? Explain

Different measurements are expressed in different units. Choose the correct SI units for the following types of measurement The SI units for measuring the velocity of the car: The SI units for measuring the acceleration of the car: The SI units for

pitcher exerts 100.0N of Force on a ball with a power output of 450 W. What is the velocity of the ball

Mandeep is filling quart containers with different craft materials. Which of the following materials would give a container the most inertia cotton balls feathers clay glitter

Calculate the work done in lifting a 500-N barbell 2.2 m above the floor. What is the potential energy of the barbell when it is lifted to this height? be bor

Which is a result of using a machine? The amount of work that is done is increased. The work input is less than the work output. Both the force and the distance through which it acts increase.

What is the difference between electromagnet and electromagnetism?

Which of the following can be determined by studying the spectrum of a star? the chemicals in the atmosphere of the star the motion of the star the temperature of the atmosphere of the star all of the above

How do I find the specific heat of an object?

In order to be considered scientific, evidence must be: