Which of the following is a scalar quantity?

A.

90 km/hr north

B.

20 m/s at an angle of 25

C.

30 pounds

D.

15 N down

Describe how vibrations produced in your ear by a sound wave enable you to hear the sound.

An automobile traveling at 25.0 km/h along a straight, level road accelerates to 65.0 km/h in 6.00 s. what is the magnitude of the auto's average acceleration?

What is the magnitude of the dipole moment formed by separating a proton and an electron by 100 pm

You want to be shielded from all three types of nuclear radiation. If you find shielding that blocks radiation, then it will most likely also block the other two types.

A flat uniform circular disk (radius = 2.00 m, mass = 1.00 x102 kg) is initially stationary. The disk is freeto rotate in the horizontal plane about a frictionless axisperpendicular to the center of the disk. A 40.0 kg person, standing 1.

A. A PH202 student lives next to a construction site and sees a crane with a wrecking ball demolish the building next door. The wrecking ball swings along the wall between her house and the neighbor's house.

Sometimes when you are training for event you may notice a decrease in improvement in level out of performance true or false

Two sailboats leave a harbor in the bahamas at the same time. the first sails at 23 mph in a direction 330°. the second sails at 34 mph in a direction 190°.

What conclusion can be drawn from the statement that an element has high electron affinity, high electronegativity, and a high ionization energy? A) The element is most likely from Group 1A or 2A and in period 1 or 2.

When a cyclist rides past you on the street, this is an example of