Two airplanes leave an airport at the same

time. The velocity of the first airplane is

650 m/h at a heading of 60.5

◦

. The velocity

of the second is 560 m/h at a heading of 85◦

.

How far apart are they after 2.9 h?

In what part of the earth does convection occur?

How would the number 13,900 be written using scientific notation?

The stars in a constellation are physically close to one another.

Select all the objects that earth's gravitational fiel influences A) sun B) mars C) moon D) Jupiter

If a magnet is broken in half what occurs? A. Nothing B. It depends on where it was broken C. The North Pole and South Pole are separated D. New north and south poles are created

A student uses an indicator to measure the pH of a solution. The indicator shows a pH of 7. What must be true of this solution? The solution contains neither hydronium ions nor hydroxide ions.

What is the purpose of a valve?

A particle travels 15 times around a 10-cm radius circle in 42 seconds. what is the average speed (in m/s) of the particle?

Where are the magnetic fields stronger near a bar magnet? A) Top B) Center C) Ends D) Bottom

You pull a simple pendulum of length 0.225m to the side through an angle of 3.50∘ and release it. Part A How much time does it take the pendulum bob to reach its highest speed? Take free fall acceleration to be 9.80 m/s^2.