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A 66kg rock climber is climbing a so called chimney between two rock slabs as shown in the figure. The static coefficient of friction between her shoes and the rock is 1.22; between her back and the rock it is 0.92. She has reduced her push against the rock until her back and her shoes are on the verge of slipping. What is her push against the rock? What fraction of her weight is supported by the frictional force on her shoes?
Our Milky Way galaxy is 100000 ly in diameter. A spaceship crossing the galaxy measures the galaxy's diameter to be a mere 1.0 ly. What is the speed of the spaceship relative to the galaxy
A gas is expanded from a volume of 1.0 L to 2.8 L at a constant pressure of 3.0 atm Find the net work done during the complete cycle
A rectangular loop of wire has dimensions 0.5m by 0.3m. The loop is pivoted at x axis and lies in the xy plane. A uniform magnetic field of magnitude 1.5 T is directed at an angle of 40° with respect to the y axis with field lines parallel to the ..
Amazingly, at exact distance that you calculated in question 2a (73.5 meters), there was a trampoline! Thinking quickly, I orient myself appropriately and hit the trampoline.
A mass m = 15 kg is pulled along a horizontal floor, with a coefficient of kinetic friction ?k = 0.1, for a distance d = 5.1 m. What is the work done by gravity as it comes to rest
The length of a simple pendulum is 0.72 m, the pendulum bob has a mass of 295 g, and it is released at an angle of 12° to the vertical. What is the pendulum bob's speed when it passes through the lowest point of the swing
A converging lens of focal length 7.830 cm is 19.8 cm to the left of a diverging lens of focal length -6.16 cm. Find the location of the coins final image
Two wires have the same length and the same resistance. One is made from aluminum and the other from copper. Obtain the ratio of the cross-sectional areas
A scuba diver is 32 m below the surface of a lake, where the temperature is 5°C. What is the volume of the bubble right before it breaks the surface
A uniform meter stick with a mass of 205 g is supported horizontally by two vertical strings, one at the 0 cm mark and the other at the 90 cm mark. what is tension on the string at the 0 cm mark and at the 90 cm mark.
Blocks with masses of 2.0 , 4.0 , and 6.0 are lined up in a row on a frictionless table. All three are pushed forward by a 57 N force applied to the 2kg block.How much force does the 4 block exert on the 6.0 block.
A second baseman tosses the ball to first baseman, which catches it at the same level from which it was thrown. The throw is made with an initial speed of 15 m/s at an angle of 38.0^circ above the horizontal. What is the horizontal component of ba..
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