If you have two molecules of TiO2, how many oxygen atoms would you have?

A) 4
B) 2
C) 3
D) 6
E) none


Answer: A

Physics & Space Science

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Energy Conservation With Conservative Forces: Two frisky otters slide down frictionless hillsides of the same height but different slopes. The slope of the hill of otter 1 is 30°, while the slope of the hill of otter 2 is 60°. If both start from rest, which otter is moving faster when she reaches the bottom of her hill?

A. Otter 1 is moving faster. B. Otter 2 is moving faster. C. The heavier otter is moving faster, no matter which hill she used. D. Both otters have the same speed at the bottom. E. The otter that took the shorter time is moving faster.

Physics & Space Science

Three long, straight, parallel wires all lie in the yz plane and each carries a current of 20 A in the positive z direction. The two outer wires are each 4.0 cm from the center wire. What is the magnitude of the magnetic force on a 50-cm length of either of the outer wires?

a. 1.0 mN b. 0.50 mN c. 1.1 mN d. 1.5 mN e. 2.0 mN

Physics & Space Science

A hollow conducting sphere of radius 12 cm had a charge of 18C placed on it. What is the potential at the surface of the sphere?

A. 0 V
B. 24 V
C.
D.
E.

Physics & Space Science

It is difficult to see the roadway when driving on a rainy night mainly because

A) light scatters from raindrops and reduces the amount of light reaching your eyes. B) of additional condensation on the inner surface of the windshield. C) the film of water on your windshield provides an additional reflecting surface. D) the film of water on the roadway makes the road less diffuse. E) none of the above

Physics & Space Science