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Solve the following question given below:
Question: You are helping your friend by pushing a 50.0 kg soar up the ramp that leads to the moving truck. You push the sofa up 2 meters along the ramp, with a force of 600 N in a direction parallel to the ramp, which is at a 30 degree inline. The coefficient of kinetic friction between the sofa and the ramp is 0.45.
A- You accidentally let go of the sofa, and it starts sliding down the ramp. How fast is the sofa moving after sliding back down the 2 meters?
Please show all work and clearly explain how fast the sofa is moving.
What initial launch speed is required to allow a projectile to have a range of 300 m if it is launched at an angle of A) 30 above the horizontal B) 45 above the horizontal .C) 60 above the horizontal.
A merry-go-round starts from rest and accelerates uniformly over 23.5 s to the final angular velocity of 6.55 rev/min.
a soccer ball is kicked with an initial horizontal speed of 5 m/s and an initial vertical speed of 3m/s. find the ball's verical speed at the apex of the flight
A steel tank contains 301 g of ammonia gas (NH3) at a pressure of 1.35 ? 106 Pa and temperature of 71°C. What is the volume of the tank
The power radiated by a star is 8.0 x 10^30 W. What is the intensity of the radiation from this star at a distance of 1.0 x 10^12 m from the star
We have a container of a hot ideal monatomic gas. The volume of the container is 25 liters. determine the change of internal energy of the gas
A simple pendulum is swinging back and forth through a small angle, its motion repeating every 1.12 second. Determine how much longer should the pendulum be made
Waly Whacko claims to have invented a heat engine that will revolutionize industry. It runs between a hot source at 300oC and a cold sink at 25oC. What is the actual maximum efficiency of his engine
an insulated tank is divided into two parts by a partition. one part of the tank contains 2.5 kg of compressed liquid
A stone is thrown vertically upward. On its way up it passes point A with speed v, and point B, 4.84 m higher than A, with speed v. calculate the maximum height reached by the stone
An electron that has energy of approximately 8.0e+01 eV moves among rigid walls 1.3 nm apart. Discover the precise energy of the electron. Discover the quantum number n for the energy state that the electron occupies.
There are two forces on the 2.13 kg box in the overhead view of the figure but only one is shown. For F1 = 26.7 N, a = 14.5 m/s2, and ? = 31.1°, find the second force in unit-vector notation
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