Waves will have the highest speed in_

• air at 0°C

air at 5°C

air at 20°C

air at 30°C

Describe a situation that demonstrates that water waved carry energy

The resultant force acting on an object of mass 5.0kg varies with time as shown. the object is initially at rest.

If the current in the circuit above is 10 amps and the resistance is 3 ohms, what is the voltage?

Sound travels slow in cold air. Why does the speed of sound depend on air temperature?

Name an organic molecule that carbon is found in.

1. The sun and other stars produce visible light by a. fluorescence. b. luminescence. c. incandescence. d. electroluminescence.

What are gravitons?

Which of the following would be considered basic science questions? A. How can cars be made safer? B. What is the best way to improve a gas engine? C. Why do many birds have colorful feathers? D. What are the stages in the life cycle of a star?

Which description does the phrase "mechanical advantage" most closely relate to?

The breaker of a certain circuit installed in a house shuts down at 10 amps. Can we connect a water heat of 2 kW to a power outlet of 240 V in this circuit?