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Royce Blake
Physics
All living things are made up of one or more
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Clara
Physics
Two atoms that are isotopes of each other must have the same number of what?
A. neutrons
B. all particles
C. protons
D. atomic mass
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Giovani Riggs
Physics
To stop a 4.1 kg car moving at 9.2 m/services in 7.5 seconds requires a force of newtons
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Damarion Lucas
Physics
Explain the difference between a fluorescence emission spectrum and a fluorescence excitation spectrum. which more closely resembles an absorption spectrum?
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Raymond York
Physics
Normal atmospheric pressure at sea level is?
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Stanley Burns
Physics
In a laboratory test of tolerance for high acceleration, a pilot is swung in a circle 13.0 m in diameter. It is found that the pilot blacks out when he is spun at 30.6 rpm (rev/min).
a) At what acceleration (in SI units) does the pilot black out?
b) If you want to decrease the acceleration by 12.0% without changing the diameter of the circle, by what percent must you change the time for the pilot to make one circle?
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Jayvon Dudley
Physics
The light you see around you from the Sun is called UVvisibleX-infrared rays.
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Buddie
Physics
An astronomer wants to visualize the relative distances between planets in our solar system. A biologist wants to examine the branching of blood vessels within the body. A chemist wants to see the angles between bonds in a molecule. A geologist wants to view the layers of the Earth from core to crust.
What is the best method that all of these different scientists could use to perform their investigations?
A. perform a field study
B. create a controlled laboratory experiment
C. build a model
D. all of these
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Chasity Carson
Physics
How to create a water ripple experiment
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Raindrop
Physics
Why would a person in north america not see the solar eclipse shown here?
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Kenley Oneill
Physics
An insulator:
conducts electrons
resists conduction of electrons
repels positive charges
is neutral
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Hadassah Colon
Physics
A cycle in which a person loses weight gains it back and lose it again is known asa. yo-yo dieting
b. anorexia
c. calorie restrictiond. bulimia
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Augustus Harding
Physics
Rutherford's atomic theory included which idea?
A Atoms are featureless and solid
B Electrons float around a nucleus that contains protons
C Atoms are composed of a positively charged sphere that contains electrons.
D Atomic structure is related to electricity
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Aleena
Physics
To provide the pulse of energy needed for an intense bass, some car stereo systems add capacitors. One system uses a 2.4F capacitor charged to 24 V, double the normal 12 V provided by the car's battery. How much energy does the capacitor store at 12 V? How much energy does the capacitor store at 24 V?
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Kristian
Physics
There are elements in the surface of the sun that do not exist on earth. true false
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