Through which one of the following mediums is the velocity of a sound wave the greatest?

A. Water

B. Lead

C. Steel

D. Air

Are diatomic compounds ionic or covalent?

In a motor, the combined effect of electric currents and magnetic forces turn electrical energy into which of the following? A. a battery B. a generator C. mechanical energy D. electromagnetic energy

If the amount of gas in a sealed container increases, what happens to the pressure in the container

What is the change in temperature of a block of concrete that is heated from 24°C to 39°C?

A rolling ball will eventually stop rolling. Which describes one reason why this happens? A) the ball eventually loses it's energy? B) friction converts some energy into heat energy? C) friction converts some energy into kinetic enregy?

What is the relationship between the mass and period in a mass hanging on spring oscillation and why?

Saturn's moon Titan has a mass of 1.35 * 1023 kg. If Titan is 1.19 * 106 km from Saturn, and Saturn's mass is 5.86 * 1026 kg, what is the gravitational force between Saturn and its moon? 2.76 * 104 N 3.29 * 107 N 3.73 * 1021 N 4.43 * 1030 N

What has occured when bubbles form in a liquid that is being heated

What would happen to the supply of ATP in your cells if you did not eat enough carbohydrates?

According to a rule-of-thumb, every 5 seconds, between a lightning flash and the following thunder gives the distance to the flash in miles.