Physics, 31.05.2021 21:00 lorrainelopez
A 5kg block rests on a rough surface (μs=0.5, μk=0.3 ). A 20 N force at an angle of 30o above the horizontal is applied to the block. Calculate the frictional force acting on the body.
Answers: 3
Physics, 20.06.2019 18:02, rousedem28381
Plzz worth 10 ! which statement about energy transformations is not true? a all forms of energy can be transformed into thermal b energy is never destroyed or created during transformations c potential chemical energy always transforms into kinetic d some thermal energy is always released during a transformation
Answers: 2
Physics, 21.06.2019 22:40, cookies1164
Ablock of mass m = 2.5 kg is attached to a spring with spring constant k = 710 n/m. it is initially at rest on an inclined plane that is at an angle of θ = 23° with respect to the horizontal, and the coefficient of kinetic friction between the block and the plane is μk = 0.19. 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. a) what is the block's initial mechanical energy? 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, 22.06.2019 17:30, Mariaisagon8446
Heterogeneous mixture with larger particles that never settle is
Answers: 2
Physics, 22.06.2019 17:40, RayshawnBoulware
A15.75-g piece of iron absorbs 1086.75 joules of heat energy, and its temperature changes from 25°c to 175°c. what is the specific heat capacity of iron?
Answers: 1
A 5kg block rests on a rough surface (μs=0.5, μk=0.3 ). A 20 N force at an angle of 30o above the ho...
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