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On a ski weekend in Colorado, Bob, whose mass is 75.0kg, skis downa hill that is inclined at the angle of 15.0 degrees to the horizontal and has a vertical rise of 25.0m. How much work is done by gravity on Bob as he goes down the hill?
how much tension must a cable withstand if it is used to accelerate a 20.0 kg car vertically upward at 0.70 m/s^2
Some human nerve cells have a long, thin cylindrical cable (the axon) from their inputs to their outputs. Determine the resistance of the fluid in this axon
A car traveling at 18 {rm m/s} runs out of gas while traveling up a 24.0^circ slope. How far up the hill will it coast before starting to roll back down.
You are assigned the design of a cylindrical, pressurized water tank for a future colony on Mars, Find the net downward force on the tank's flat bottom
A mountain climber looks up a slope and sees an avalanche ofboulders accelerating toward her. The boulders are initially60.0m above, moving at an initial speed of 2.00m/s and acceleratingat 4.00m/s^2.
Two packing crates of massesm1= 10.0kg and m2=7.00 are connected by a light string that passes over a frictionless pulley, Find the acceleration of the 7.00 kg crate
Having trouble figuring out the total time it takes for something following the path of a brachistochrone. Starting at some point along and falling due to gravity to the lowest point. Equation I have is (a^.5/g^.5)*(1-cos(t))^.5/(cos(t_o)-cos(t))^.5 ..
An object of size 3cm is placed 14cm in front of a concave lens of focal length 21 cm. decsribe the image formed by the lens. What happens , if the object is moved further away from the lens
A car is being pulled out of the mud by two forces that are applied by the two ropes shown in the drawing. The dashed line in the drawing bisects the 30.0° angle. The magnitude of the force applied by each rope is 2900 newtons (N).
A 5.1 foot-tall girl stands on level ground. The sun is 23 Degrees above the horizon. How long is her shadow
An athlete runs 400m, which is exactly one loop on an Olympic stadium, making consecutive 100m distances in: 10.1, 10.3, 10.2 and 10.0s
A 20kg box is on a level surface pressed against a spring compressed 25cm and with k=1000 k/m. How far does the box go up the hill
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