Physics, 27.10.2019 01:43, serafimharmane4944
Which of the following terms best describes why a skier sliding down a hill eventually comes to a stop?
a. acceleration
b. inertia
c. gravity
d. friction
Answers: 3
Physics, 21.06.2019 22:50, Scp049
As a car drives with its tires rolling freely without any slippage, the type of friction acting between the tires and the road is 100) a) static friction. b) kinetic friction. c) a combination of static and kinetic friction. d) neither static nor kinetic friction, but some other type of friction. e) it is impossible to tell what type of friction acts in this situation.
Answers: 1
Physics, 22.06.2019 17:40, cravens511peeelg
The first-order reaction aâ2b+c has rate constant 0.538 sâ1. if the initial concentration of a is 0.867 mol lâ1, what is the half-life of the reaction in seconds? remember to use correct significant figures in your answer (round your answer to the nearest hundredth). do not include units in your response.
Answers: 3
Physics, 22.06.2019 22:00, jayonelijah
Ultraviolet radiation is dangerous because it has a high enough energy to damage skin cells. what is the best explanation of the relationship between wavelength and wave energy? a) wave energy is related only to frequency, not wavelength. b) longer wavelengths have lower frequencies but higher energy. c) the shorter the wavelength, the lower the frequency and the higher the energy. d) the shorter the wavelength, the higher the frequency and the higher the energy.
Answers: 3
Physics, 22.06.2019 22:30, nickocasamplonp6mlob
The drag force, fd, imposed by the surrounding air on a vehicle moving with velocity v is given by fd = cdaĎv 2/2 where cd is a constant called the drag coefficient, a is the projected frontal area of the vehicle, and Ď is the air density. an automobile is moving at v = 80 kilometers per hour with cd = 0.28, a = 2.3 m2, and Ď = 1.2 kg/m3.
Answers: 2
Which of the following terms best describes why a skier sliding down a hill eventually comes to a st...
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