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A 216-kg log is pulled up a ramp by means of a rope that is parallel to the surface of the ramp. The ramp is inclined at 32.5° with respect to the horizontal. The coefficient of kinetic friction between the log and the ramp is 0.758, and the log has anacceleration of 0.698 m/s2. Find the tension in the rope.
The intensity level of 34.07 harmonicas in a harmonica band is 78.31 dB. Compute the intensity level generated by one harmonica
An electron moves in a circular path perpendicular to a magnetic field of magnitude 0.230 T, find the speed of the electron and the radius of the circular path
One end of a cord is fixed and a small 0.550-kg object is attached to the other end, find the tangential and radial components of acceleration
A crate is pulled by a force (parallel to the incline) up a rough incline. The crate has an initial speed of 1.5m/s. The crate is pulled a distance of 7.5 m on the incline by a 150 N force. The acceleration of gravity is 9.8m/s² mu=0.15
A playground is on the flat roof of a city school, 6.1 m above the street below (see figure). The vertical wall of the building is h = 7.60 m high, Find the speed at which the ball was launched
You are driving in your car along a country road at a speed of 27.0m/s. As you come over a crest of a hill, how far is the tractor in front of you when you finally stop
A tennis ball is hit with a vertical speed of 30 m/s and a horizontal speed of 25 m/s. How long will the ball remain in the air? How far will it travel horizontally during this time?
A soccer player extends her lower leg in a kicking motion by exerting a force with the muscle above the knee in the front of her leg. What is the force exerted by the muscle if its effective perpendicular lever arm is 2.10 cm
icyclists in the Tour de France do enormous amounts of work during a race. For example, the average power per kilogram generated by Lance Armstrong (m = 75.0 kg) is 6.50 W per kilogram of his body mass.
Two charges are separated by a distance d and exert mutual attractive forces F on each other. If the charges are separated by a distance of d/3, what are the new mutual forces? q1 = +2C and q2 = -2C
A spelunker (cave explorer) drops a stone from rest into a hole. The speed of sound is 343 m/s in air, How deep is the hole
A resistance R and a 1.5-H inductance are in series across a 60-Hz ac voltage. What is the ac input voltage
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