If the distance between the centers of mass of two bodies is doubled, the gravitational force between the bodies will become what portion of the original force

Q-1: If the distance between the centers of mass of two bodies is doubled, the gravitational force between the bodies will become what portion of the original force:

1) double
2) one half
3) remain the same
4) one quarter
ANSWER: 4 -- ONE QUARTER

Q-2:  The Doppler Effect predicts that the spectrum of light from a visible body moving AWAY from the Earth will experience a shift in frequency when viewed from Earth. This particular shift is known as the:

1) Blue shift
2) Neutral shift
3) Red shift
4) Dirac shift
ANSWER: 3 -- RED SHIFT

Q-3:  On a weather map, the lines that depict equal pressure are called what?

ANSWER: ISOBARS

Q-4:  A far-sighted person, without optical correction, is typically able to see nearby objects more clearly in bright light. The reason for this phenomena is:

1) bright light provides better illumination.
2) the pupil of the eye narrows which increases the depth of focus.
3) the pupil of the eye widens which increases the depth of focus.
4z) the bright light causes squinting which flattens the eyeball which tends to correct the far-sighted condition.
ANSWER: 2 -- THE PUPIL OF THE EYE NARROWS WHICH INCREASES THE DEPTH OF FOCUS

Q-5: The first reflecting telescope was built by:

1) Galileo
2 Copernicus
3) Tycho Brahe
4) Isaac Newton
ANSWER: 4 -- ISAAC NEWTON

Q-7:  Ten Coulombs of charge flowing through a wire per second is equal to:

1) 100 Amperes
2) 10 Ampere
3) 1 Amperes
4) 0.1 Amperes
ANSWER: 2 -- 10 AMPERES

Q-8:  Magnetic fields are produced by:

1) resistance
2) an electric potential difference
3) electric current
4) stationary charge
ANSWER: 3 -- CURRENT

Q-9: A 10 ohm and a 20 ohm resistor are connected in parallel to a current source. What fraction of the current flows through the 20 ohm resistor?

1) 1/2
2) 1/3
3) 2/3
4) 3/4
ANSWER: 2 -- 1/3