When the temperature of the air is 50°C, the velocity of a sound wave traveling through the air is approximately?

A. 381 m/s

B. 30 m/s

C. 361 m/s

D. 50 m/s

The radio waves of a particular AM radio station vibrate 680,000 times per second. What is the wavelength of the wave?

Complete this sentence. The electrical conductivity will When the size of the sample increases A decrease B stay the same C increase D be unable to be determined

Water flows over a section of Niagara Falls at a rate of 2.4 * 106 kg/s and falls 67 m. What is the power wasted by the waterfall? The acceleration due to gravity is 9.8 m/s 2. Answer in units of W.

Which of the fallowing is a chemical change? A. Rocks being smoothed by rapid water movement. B. The pink color of a rose. C. Iron's attraction to a magnet. D. Decomposition of stone due to acid rain.

A car travels 3 km in 2 min. What is the velocity of the car?

A conductor, with outer surface labelled a, contains a cavity, inner surface b. In this cavity there is a conducting sphere of radius r, and surface c. The sphere carries a charge of 1 C, while the conductor a charge of 2 C.

In a frictionless environment, which energy stays the same? 1. Kinetic Energy 2. Potential Energy 3. Internal Energy 4. Total Mechanical Energy

In what order do the earth, sun, and moon line up in a totla solar eclipse

17. Ice has a water. albedo than land or O A. similar O B. opposite O c. higher O D. lower

When you put your hands on a cold object like a glass of ice water your hands become?