For an object in uniform circular motion, what can you say about the directions of the velocity, acceleration, and net force vectors?

A) List two instances when increasing friction is desirable. B) List two instances when decreasing friction is desirable.

A plane flying due east at 395 km/h, is hit by wind blowing at 55 km/h toward the west. what is the resultant velocity of the plane?

A lava flow is an example of what igneous rock

If one object is hot and another one cold, thermal energy A: Will move from the cold object to the hot one. B: Will move from the hot object to the cold one. C: Will move back and forth between the hot and cold objects. D: Will not move at all.

The electric force between two charged objects is influenced by

Which of the following is a vector quantity? A. 83 ounces of liquid B. 55 km/hr in a truck C. 15 seconds of travel D. 10 m/s down

Which of the following best describes the ultraviolet catastrophe of blackbody radiation? A. As energy is added to an object acting as a blackbody radiator, its emissions move to the ultraviolet part of the electromagnetic spectrum. B.

Is an engine-activated booster unit that reduces the effort required to apply the hydraulic brakes

A box is lowered using a rope. If the acceleration of the box, is 2.5 m/s2 (downward) and the tension in the rope is 31 N, what is the mass of the box (in kg) ?

On a very hot summer day, the rooms on the first floor of a house stay cooler than the rooms on the second. Which form of thermal energy flow causes this to occur? A) Conduction B) Convection C) Kinetic D) Radiation