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Cloe Warren
a scientist spends most her time observing the motion of an object and how they behave which branch of science is she studying?
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Iyana Mccann
Disregarding air resistance, what is the speed of a ball dropped from 12 feet just before it hits the ground? (Use 1 ft = 0.30 m, and use g = 9.8 m/s2.)
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Macey
Diffraction and interference demonstrate which concept?

A) particle nature of light

B) wave nature of light

C) polarization of light

D) refraction of light
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Mikaela Brennan
Which is an example of a solution? A) sugar water B) muddy water C) sand and water D) cereal and milk
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Headlights
An atom of this element would have a very easy time losing one electron to form an ionic bond with an atom of an element that would easily accept it:
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Ari Cameron
Name three devices or inventions which are designed to increase friction.
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Kyson Gardner
Which statement best describes heating by conduction?

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

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

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

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

Hi K12
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Melina Mills
Brandy has built a computer model of a weather system. She has included information about bodies of water, the Sun, and the atmosphere. Brandy records the average daily temperature of a continental city that is at sea level (City A). She then records the noontime temperature of a continental city at the same latitude but at a greater elevation (City B). If all other factors in her model are the same for both cities, A. City B will have a higher temperature overall than City A. B. It will always rain in City B but never in City A. C. It will always rain in City A but never in City B. D. City A will have a higher temperature overall than City B.
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Sonia Michael
superman lived on another planet where the acceleration due to gravity is 23.6 m/s^2. if a woman falls from a building that is 65m tall, how long he have to save her before she hits the ground
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Camryn Shepard
What is a main difference between hurricanes and tornadoes? Tornadoes form only over warm water, and hurricanes form only over cold water. Tornadoes happen during the winter, and hurricanes happen during the summer. Tornadoes can form over land, but hurricanes only form over the ocean. Hurricanes rotate counterclockwise, and tornadoes rotate clockwise.
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Damari
If an element with an atomic number of 51 and an atomic mass of 121, how many neutrons does it have?
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Monique Friedman
What is the solution to - 6+5 (1-x) = - 13-7x
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Devyn Steele
What is one result of warming up your body's muscles before exercising?
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Aliyah Leach
A certain radar installation tracks airplanes by transmitting electromagnetic radiation of wavelength 4.0 cm.

a) Find the frequency of this radiation. b) Find the time required for a pulse of radar waves to reach an airplane 4.8 km away and return.
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Kaden Graves
What is weight, in newtons, of a 50.-kg person on earth?
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