Q:

Blocking in experimental design is useful because it

A) keeps the experimenter from knowing which subjects are in the treatment group.	B) prevents response bias from entering into the experiment.
C) gives the quarterback enough time to throw the ball.	D) controls for multiple variables in an experiment.

Answer & Explanation Answer: D) controls for multiple variables in an experiment.

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Q:

What does the kinetic energy (KE) of a moving body depend upon?

A) Mass & its position	B) Weight & its position
C) Mass & acceleration	D) Mass & velocity

Answer & Explanation Answer: D) Mass & velocity

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Q:

The rate of change of velocity is called

A) Momentum	B) Speed
C) Acceleration	D) Force

Answer & Explanation Answer: C) Acceleration

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Q:

A unit of power is called a

A) Joule	B) Pascal
C) Newton	D) Watt

Answer & Explanation Answer: B) Pascal

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Q:

The G-20 Summit in November 2015 was organized in which European Country?

A) Germany	B) Turkey
C) France	D) Spain

Answer & Explanation Answer: B) Turkey

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Q:

The theory behind stars twinkling is that

A) The refractive index of the different layers of earth's atmosphere changes continuously, consequently the position of the star's image changes with time	B) The intensity of light emitted by them changes with time
C) The light from the star is scattered by the dust particles and air molecules in the earth's atmosphere	D) The distance of the stars from the earth changes with time

Answer & Explanation Answer: A) The refractive index of the different layers of earth's atmosphere changes continuously, consequently the position of the star's image changes with time

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Q:

What is the heat generated (in J) in a heating element of resistance 800 Ω when a current of 0.2 A passes through it for 40 seconds?

A) 6400	B) 1280
C) 640	D) 3200

Answer & Explanation Answer: B) 1280

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Q:

Mirages are formed primarily due to ___ of light.

A) Reflection	B) Diffusion
C) Refraction	D) Scattering

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