What is a vector?

a. a quantity that has magnitude and direction

b. a scalar quantity

c. a direction

d. a magnitude that can be measured

What happens to temperature as one moves does deeper inside the earth?

What is the momentum of a 89-kilogram ice skater gliding across the ice at a speed of 9 m/s? kg-m/s

Why does the airplane seem to be motionless while traveling

What are all things made of: a) atoms b) elements c) air

Capacitors C1 = 5.85 µF and C2 = 2.80 µF are charged as a parallel combination across a 250 V battery. The capacitors are disconnected from the battery and from each other.

Calculate the wavelength and frequency of the radiation emitted by the electronic transition from the 10th to the 9th excited state of hydrogen.

An unknown fluid has a specific gravity of 0.750. What is the volume of 22.5 kg of this fluid? A. 10 L B. 20 L C. 30 L D. 40 L

What kind of tide is responsible for extreme tides

What does the speed of sound depend on? A. Medium that the sound travels through B. Acoustics C. Frequency of the sound D. Loudness of the sound

Which of these is not a source of the shock waves that lead to protostars?