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Physics

Erica Chung

Which description explains the flow of heat?

from cold to hot

from hot to cold

from cool to warm

from cold to warm

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Physics

Klaus

Stars set about how many minutes earlier each day?

A. 8

B. 6

C. 4

D. 2

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Physics

Guest

Which statement about polymers is true?

1. Polymers are substances that have relatively large molecules.

2. Oil and gas are the starting materials for making all polymers.

3. Fabrics such as cotton and silk are synthetic polymers.

4. All polymers are obtained from living organisms.

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Physics

Zackary Jennings

Can the world run out of carbon? Explain why you answered the way you did

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Physics

Guest

The frequency of a given region of the electromagnetic spectrum ranges from 3 * 1016 - 3 * 1019 hertz. Which type of wave is found in this region?

A. x-rays

B. ultraviolet rays

C. infrared waves

D. radio waves

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Physics

Demarcus Dudley

What is the wavelength of an earthquake wave if it has a speed of 9 km/s and a frequency of 15 Hz?

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Physics

Leland Gillespie

How are musical instruments grouped?

A: by their frequency

B: by the wavelengths they produce

C: by what they are made of

D: by how they produce pitch

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Physics

Yaretzi

What is the net force acting on a golf car traveling at a constant speed of 5 mph

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Physics

Shannon Richardson

What is the molality of a solution that contains 54 grams of NaOH dissolved in 1.50 kg of water? (The molar mass of NaOH 40.00 grams/moles.)

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Physics

Pranav Conway

A 200 g piece of iron is heated to 100°C. It is then dropped into water to bring its temperature down to 22°C. What is the amount of heat transferred to water? (ciron = 0.444 J/g°C)

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Physics

Gwendolyn

What is the intermingling of one substance within another

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Physics

Juliana Harris

What best describes the motion of the medium particles in a longitudinal wave?

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Physics

Justus Hawkins

If we decrease the distance an object moves we will

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Physics

Gilberto Moreno

Inside a torque converter, the one-way clutch allows the stator to rotate only in one direction. Technician A says that it will turn in the same direction as the output shaft. Technician B says it turns in the same direction as the impeller. Who is correct

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Physics

Brian Griffin

The decibel scale measures

A. the loudness of sound

B. the frequency of sound

C. the pitch of sound

D. the wavelength of sound

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