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A skier is pulled up a slope at a constant velocity by a tow bar. The slope is inclined at 25.5° with respect to the horizontal. The force applied to the skier by the tow bar is parallel to the slope. The skier's mass is 56.5 kg, and the coefficient of kinetic friction between the skis and the snow is 0.112. Calculate the magnitude of the force that the tow bar exerts on the skier.
What is the phase angle in an RLC circuit with resistance of 9.90 k?, capacitance 1.50 ?F, and inductance 250 mH
Astronomers have observed a planet orbiting a near-by star. Through close observation, What is the velocity at apogee, in km/s, for the planet
One particle has a mass of 4.00 10-3 kg and a charge of +7 µC. A second particle has a mass of 5.00 10-3 kg and the same charge. Find the initial separation between the particles
Consider a dry air parcel at -12 degrees celsius and 450mb that descends adiabatically down to the surface where p=1000mb, Calculate the potential temperature at the surface
At the instant the traffic light turns green, an automobile starts with a constant acceleration a of 2.0 m/s2. How fast will the automobile be traveling at that instant
A 25kg solid door is 220cm tall, 91cm wide. What is the door's moment of inertia for rotation about a vertical axis inside the door, 15cm from one edge.
Find the flux of Earth's magnetic field of magnitude 5.00 cross 10-5 T through a square loop of area 20.0 cm2
During a testing process, a worker in a factory mounts a bicycle wheel on a stationary stand and applies a tangential resistive force of 115N to the tire's rim. what force must be applied to the chain
calculate the q value in mev for the double beta decay of 128te atomic mass 127.904461 a.m.u. to 128xe atomic mass
A man is running at speed c (much less than the speed of light) to catch a bus already at a stop. At t=0, while he is a distance b from the door to the bus, the bus starts moving with the positive acceleration a.
At an amusement park there is a ride in which cylindrically shaped chambers spin around a central axis. What is the radius of a chamber
questiona professional race-car driver buys a car which can accelerate at 89.0 ms2. the racer decides to race beside
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