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Physics

Alisha Deleon

The half-life of carbon-14 is 5730 years. How long will it take for the number of

carbon-14 nuclei in a sample to drop to a quarter of the original number?

Enter your answer as a number

years

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Physics

Browning

Which object has more thermal energy a bowl of soup or pot of soup

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Physics

Jaida Sloan

When you look into a clear pond, a fish may appear to be in a different position than it actually is. What is this caused by?

A. diffraction

B. dispersion

C. refraction

D. reflection,

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Physics

Juliet

How long would it take to drive to alpha centauri (4.4 light-years away) ?

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Physics

Heather Guerrero

A type of fault where the hanging wall slides upward

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Physics

Alexandria Reynolds

How was dyslexia treated in the past and how is dyslexia treated today?

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Physics

Zachariah Gross

The work of Charles Kuen Kao is likely to have been most influenced by the work of which of the following scientists?

A. Galileo Galilei

B. Christian Doppler

C. Sir Isaac Newton

D. Ibn al-Haytham

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Physics

Cael

Suppose a car is moving in a straight line and steadily increases its speed. It moves from 35 km/h to 40 km/h the first second and from 40 km/h to 45 km/h the next second. What is the car acceleration?

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Physics

Carroll

Why can crevasses in glaciers only be 50 meters deep?

A. Plastic flow occurs below that depth.

B. Glaciers cannot be thicker that 50 Meters.

C. Surges prevent plastic flow below that depth.

D. Basal slip occurs below that depth.

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Physics

Trent Gallegos

What are the changes to Earth's surface that occur as a result of plate movement

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Physics

Bryanna Walls

Two spaceships are approaching each other. (a) If the speed of each is 0.9c relative to Earth, what is the speed of one relative to the other? (b) If the speed of each relative to Earth is 30,000 m/s (about 100 times the speed of sound), what is the speed of one relative to the other?

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Physics

Aisha Rivers

Mechanical work is done an object when a force displaces the object in the direction of the force or a component of the force.

True or false?

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Physics

Ashley Mcclure

Electric current can best be induced in a wire by

a. stretching the wire.

b. moving a magnet up and down near the wire.

c. setting the wire near a magnet.

d. rotating the wire. E. none of the above

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Physics

Parker Bray

A car traveled 176 miles on 6.4 gallons of fuel the car averaged how many miles per gallon

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Physics

Tyrese Mays

Which of these describes how heat is transferred by radiation?

A.) Warm air rises and takes heat with it; eventually it cools and sinks.

B.) Sunlight travels through space without the aid of fluids or solids.

C.) Air at the equator rises and sinks at the poles.

D.) Air molecules touch the warm ground, heating them up.

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