Knowing the definition of work as used by physicists, how can the work done on an object be equal to zero? a. The force and distance are perpendicular. b. The force is zero. c. The distance is zero. d. all of these e. none of these.

Under which of the following conditions is the net force acting on a charged particle zero? when the particle is not charged when the particle is stationary when the particle moves parallel to the direction of the magnetic field all of the above

The graph shows the progress of a car which traveled 300 km in 5 hrs. Assuming that its speed remained constant, how far had the car gone after 2 hrs?

When it comes to temperature maps, winds will from high temps to cold or cold temps to warm.

Which of the following are true when meteorologists predict the weather? Select all that apply. Start with computer generated weather models Long-term forecasts are usually accurate Short-term forecasts are usually accurate Predicting storms is

1. If you double your speed, you will need about four times the distance to stop. A. true B. false

Which are true: 1) Two negative charges repel each other. 2) A neutral object contains no charge carriers. 3) Electric charge is quantized. 4) Electric charge is conserved. 5) Two positive charges attract each other.

Would ice be considered a fluid or solid?

A worker pushes a box in a factory. In each case, decide which force has the greater magnitude: the force exerted by the worker on the box or the force exerted by the box on the worker.

To determine power we need to know the A. energy required and the time it takes B. amount of work and the distance covered C. amount of work in a given time D. distance and time it takes to do work

Does the speed of a wave depend only upon the medium through which it moves