What is a scalar?

A: a magnitude and a direction

B:the direction of a vector

C:a quantity that does not indict a direction

D:a measurement of displacement

Which of the following correctly shows the four most abundant gases in the Earth's atmosphere in order from most abundant to least abundant? A. oxygen, nitrogen, argon, carbon dioxide B. nitrogen, oxygen, argon, carbon dioxide C.

A certain car is capable of accelerating at a rate of 0.60 m/s^2. How long does it take for this car to go from a speed of 55mi/h to a speed of 60 mi/h? I know the answer is 3.7seconds! I am just confused on the steps to get the answer.

A remote controlled car travels 15 m north, back tracks 5 meters and stops. What is the car's displacement?

The earth is slightly flattened from a perfect spherical shape because of

The excitation of an electron on the surface of a photocell required 5.0 x 10 - 27 J of energy. Calculate the wavelength of light that was needed to excite the electron in an atom on the photocell

A derived unit is a combination of fundamental units. Which of the following is an example of a derived unit? a) centimeter (used to measure distance) b) gram (used to measure mass) c) cubic centimeter (used to measure volume)

Technician A says that a heater core leak can be the result of the coolant wearing a hole through the core. Technician B says that a core leak can be caused by chemical action eating a hole through the core. Who is correct?

If the Coast Guard warns of a giant wave of water approaching the shore as a result of a major earthquake, they are warning of a. an aftershock. b. liquefaction. c. a tsunami. d. landslides.

What is the total number of atoms in the following formula? CaBr2 4 3 2 1

Object A with a mass of 500 kilograms hits stationary object B with a mass of 920 kilograms. If the collision is elastic, what happens after the collision? A) Both object A and object B move forward but with different velocities.