What are the characteristics of air pressure waves that we hear as sound?

The men's world record (as of 2007) for swimming 1500 m in a long course pool is 14 min 34.56 s. At this rate, how many seconds would it take the men's world record holder to swim 0.750 mi? (1 mi = 1609 m)

How many degrees is in the centre of the sun

A quarterback throws a football with an initial velocity v at an angle θ above horizontal. Assume the ball leaves the quarterback's hand at ground level and moves without air resistance.

A 1.5 V battery is connected to a bulb of resistance of 4.5 Ω. What is the current in the bulb?

What happens when light strikes a translucent object?

Where would a car traveling on a roller coaster have the most potential energy At the bottom It's always the same At the top Halfway to the top

Is a magnetic reversal a threat to life on Earth? Whay do you say?

What are the adaptions of the tundra

Based on the number of valence electrons, what is the correct formula when nitrogen bonds to hydrogen? A) NH2 B) NH3 C) NH4 D) N2H

Choose the correct statement about the currents through the elements. Choose the correct statement about the currents through the elements. The currents in series-connected elements are not the same and depend on a current or a voltage source.