When the current through an electromagnet ceases, what generally happens to the magnetic field?

The heat released by burning candle is an example of thermal energy

A motorist is driving at 20m/s when she sees that a traffic light 200m ahead has just turned red. She knows that this light stays red for 15s, and she wants to reach the light just as it turns green again. It takes her 1.

We know the frequency range of certain sounds are: 400-560 Hz, what are the ranges of wavelength in meters when the signal transmits in air? what about in water? (In dry air at 20oC the speed of sound is 343.

What is the density of mass 45.837grams volume 1703.3414centimeters

Which of the following changes can happen when the forces on an object are unbalanced? a. The object speeds up b. the object slows down c. the object changes direction d. all of the above

A hot-air balloon of diameter 12 m rises vertically at a constant speed of 11 m/s. A passenger accidentally drops his camera from the railing of the basket when it is 19 m above the ground.

Describe the possible long term impact of a catastrophic event

Your lap feels warms because your laptop computer has been sitting on top it. This is an example of: A. conduction B. radiation C. convection Your lap feels warms because your laptop computer has been sitting on top it. This is an example of: A.

What is the resistance of a 1500 w (120 v) hair dryer? b. what is the current in the hair dryer when it is used?

What two things change when an object is in motion