Physics, 10.07.2019 18:30 camimilligan114
Acart traveling at 0.3 m/s collides with stationary object. after the collision, the cart rebounds in the opposite direction. the same cart again traveling at 0.3 m/s collides with a different stationary object. this time the cart is at rest after the collision. in which collision is the impulse on the cart greater? a. the impulses are the same. b. the second collision. c. the first collision. d. cannot be determined without knowing the mass of the cart. e. cannot be determined without knowing the rebound speed of the first collision.
Answers: 3
Physics, 22.06.2019 00:00
Ahypothesis is? close agreement by competent observers of observations of the same phenomena. a guess that has been tested over and over again and always found to be true. an educated guess that has yet to be proven by experiment. the long side of a right triangle. a synthesis of a large collection of information that includes guesses.
Answers: 2
Physics, 22.06.2019 12:20
Which of the following situations is impossible? a) an object has velocity directed east and acceleration directed east. b) an object has zero velocity but non-zero acceleration. c) an object has constant non-zero velocity and changing acceleration. d) an object has velocity directed east and acceleration directed west. e) an object has constant non-zero acceleration and changing velocity.
Answers: 2
Physics, 22.06.2019 19:00
If state law mandates that elevators cannot accelerate more than 2.40 m/s2 or travel faster than 14.8 m/s , what is the minimum time in which an elevator can travel the 373 m from the ground floor to the observatory floor? ?
Answers: 1
Physics, 22.06.2019 22:00
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
Acart traveling at 0.3 m/s collides with stationary object. after the collision, the cart rebounds i...
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