As an object moves faster through the air, its terminal speed increases.
Indicate whether the statement is true or false
[Ques. 2] Why do we call it the periodic table of the elements?
a. Because it was discovered in cycles, or periods.
b. Because it was rediscovered repeatedly at different times in history.
c. Because the properties of elements roughly repeat in each column.
d. Because atomic weights increase across a row from left to right.
e. Because it is updated periodically.
[Ques. 3] When an object reaches its terminal speed, its acceleration is zero.
Indicate whether the statement is true or false
[Ques. 4] Which is a correct list of frequencies from lowest to highest?
a. Radio, visible light, X rays.
b. Visible light, radio, X rays.
c. Visible light, ultra violet, infrared.
d. X rays, visible light, radio.
e. Radio, X rays, visible light.
[Ques. 5] As a projectile moves its speed stays constant while its direction changes.
Indicate whether the statement is true or false
[Ques. 6] How fast do electromagnetic waves travel?
a. At the speed of sound.
b. At the speed of light.
c. At one-half the speed of light.
d. Six feet per day.
e. At varying speeds depending on the electric and magnetic oscillations.
[Ques. 7] At the peak of its motion, the acceleration of a projectile is zero.
Indicate whether the statement is true or false
[Ques. 8] An electric field produces a magnetic field even when there is no wire to conduct a current provided:
a. the electric field is changing as time passes.
b. the electric field is different from place to place.
c. the electric field changes in time but at each instant is the same at every location.
d. the electric field is between a pair of parallel metal plates.
e. the electric field does not change as time passes.
[Ques. 9] During its entire motion, the acceleration of a projectile is always g.
Indicate whether the statement is true or false
[Ques. 10] The commutator in a direct-current motor:
a. starts the loop rotating.
b. holds the loop steady.
c. allows the motor to run on alternating current from a standard wall socket.
d. keeps the current flowing in the same direction through the coil.
e. reverses the direction of electric current through the coil.
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