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Squaw Valley ski area in California claims that its lifts can move 48300 people per hour. If the average lift carries people about 210 m (vertically) higher, estimate the maximum total power needed. (Assume an average mass per person of 70 kg.)
If I end up with a velocity of 1 m/s going west, am I heaver or lighter than you? What is your mass, and what is your final velocity?
What is the net force exerted by these two charges on the third charge = 46.5 placed between and at = -1.235 ? Your answer may be positive or negative, depending on direction of the force.
A small camera has a lens with focal length f=15 mm has a movable lens that can be focused on objects as close as 20 cm or as far away as infinity (relative to f). What is the optimum lens-film distance
A charge q = +929 ?C is uniformly distributed on a thin nonconducting ring of mass m = 0.60 g and radius r = 2.60 cm. What is the final angular velocity of the ring
A person weighing 119 pounds can run up 500 steps, How much power did the person expend running up the steps
A baseball batter swings the bat and applies a force of 36.38 N to the ball for a time of 0.31 s. what is the impulse on the ball
An ideal gas initially at 20°C and 199 kPa has a volume of 3.40 L. It undergoes a quasi-static, Find the heat added to the gas during the expansion
at time t = 0 s, a puck is sliding on a horizontal table with a velocity 3.60 m/s, 35.0* above the + axis. What is the velocity of the puck at time t = 1.50 s
A water pipe having a 2.60 cm inside diameter carries water into the basement of a house at a speed of 0.827 m/s, find water pressure (in kPa) at the second floor
A 0.14-kg balloon is filled with helium (density = 0.179 kg/m3). If the balloon is a sphere with a radius of 5.3 m, what is the maximum weight it can lift
In addition, snow exerts a retarding force on the sled that points opposite to the direction of motion, and has a magnitude of 57 N. Find out the acceleration of the sled and child.
an arrangement in which four disks are suspended by cords. The longer, top cord loops over a frictionless pulley, What are the masses of each disk
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