Physics, 29.01.2021 18:50 yassinesayedahmad1
Directions: A 2.0 x 103-kilogram car travels at a constant speed of 12 meters per second around a circular curve of radius 30. meters. Use this information to answer
any questions that follow. What is the direction of the centripetal force on the car as it goes around the curve?
Away from the center of the circular curve
Away from the center of the circular curve
Toward the center of the circular curve
In the direction of the car's motion
Answers: 2
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Photoelectrons with a maximum speed of 6.50 x 107 m/s are ejected from a surface in the presence of light with a frequency of 6.75 x 1014hz. if the mass of an electron is 9.10 x 10-31 kg, calculate in joules the maximum kinetic energy of a single electron. 3.84 x 10-15 j 1.92 x 10-15 j 5.92 x 10-23 j 3.07 x 10-16 j
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If a car has a speed of 20 m/s, how long will it take to go 155 m? a. 3100 s b. 135 s c. 2.1 s d. 7.8 s
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A6.5-g iron meteor hits the earth at a speed of 295 m/s. if its kinetic energy is entirely converted to heat in the meteor, by how much will its temperature rise? the specific heat of iron is 113 cal/kg ā cĀ°, and 1 cal = 4.186 j. a) 57,100 cĀ° b)384 cĀ° c)0.147 cĀ° d)92.0 cĀ°
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If the wavelength is tripled, while the speed of the wave is held constant, what happens to the frequency?
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Directions: A 2.0 x 103-kilogram car travels at a constant speed of 12 meters per second around a ci...
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