Physics, 21.02.2020 05:23, nathanscastr02
A crate of mass 190 kg sits on a horizontal floor. The coefficient of static friction between the crate and the floor is 0.4, and the coefficient of kinetic friction is 0.36. You push the crate with a horizontal force of 500 N. What is the magnitude of the frictional force on the crate by the floor in this situation?[Use g = 9.81 m/s2]A small asteroid with a mass of 2000 kg moves near the Earth. At a particular instant the asteroid’s velocity is 〈 -1.30 x 104, 4.20 x 104, 0 〉 m/s, and its position with respect to the center of the center of the Earth is 〈 6.00 x 106, 10.00 x 106, 0 〉 m. The center of the Earth (mass = 5.97 x 1024 kg), is at the origin of the coordinate system. What is the (approximate) new momentum of the asteroid 1.50 x 103 seconds later?[Use: G = 6.67 x 10-11 Nm2 / kg2 ]
Answers: 2
Physics, 21.06.2019 23:30, idjfjcjs584
Edward tolman explained the results of his study by theorizing that the rats were learning about the maze during every trial but they a. were agitated because other groups were getting reinforcement b. could not remember how to demonstrate it without reinforcement c. were not motivated to demonstrate it without reinforcement d. seemed to be too lazy to actually work without reinforcement
Answers: 3
Physics, 22.06.2019 01:30, ayalat9596
An object of dimensions 50 cm x 40 cm x 0.20 cm has a mass 60g. find its density in g/cm3 and kg/ m3
Answers: 1
Physics, 22.06.2019 19:30, FireFlight
Point charges q1=+2.00μc and q2=−2.00μc are placed at adjacent corners of a square for which the length of each side is 1.50 cm . point a is at the center of the square, and point b is at the empty corner closest to q2. take the electric potential to be zero at a distance far from both charges. part a what is the electric potential at point a due to q1 and q2? express your answer with the appropriate units.
Answers: 2
A crate of mass 190 kg sits on a horizontal floor. The coefficient of static friction between the cr...
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