Physics, 01.07.2019 01:30 Bladen6579
Which of the following best demonstrates the effect of static friction? a. a person dropping a ball to the ground. b. a person pushing a couch and it slowly sliding across a floor c. a person pushing a couch without being able to move it d. a person moving a ball through a stream of water
Answers: 1
Physics, 22.06.2019 20:40
Ablock of mass m = 2.5 kg is attached to a spring with spring constant k = 740 n/m. it is initially at rest on an inclined plane that is at an angle of theta= 26 with respect to the horizontal, and the coefficient of kinetic friction between the block and the plane is uk = 0.17. in the initial position, where the spring is compressed by a distance of d = 0.16 m, the mass is at its lowest position and the spring is compressed the maximum amount. take the initial gravitational energy of the block as zero. the block's initial mechanical energy is 9.472 j.b. if the spring pushes the block up the incline, what distance l in meters will the block travel before coming to rest? the spring remains attached to both the block and the fixed wall throughout its motion.
Answers: 3
Physics, 23.06.2019 01:30
The first law of thermodynamics is as follows: ∆u=q-w , which means in a system is equal to added, minus done by the system. the units for these variables are in .
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Physics, 23.06.2019 02:00
How does the strength of the electrostatic force between an electron and a proton compare to the strength of the gravitational force between them?
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Physics, 23.06.2019 03:20
2. which of the following does not affect the electrical resistance of a body? a. material composing the body b. bodies directly surrounding the body c. length of the body > d. temperature of the body
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Which of the following best demonstrates the effect of static friction? a. a person dropping a ball...
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