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A 61.0 skier is moving at 6.15 on a frictionless, horizontal snow-covered plateau when she encounters a rough patch 3.55 long. The coefficient of kinetic friction between this patch and her skis is 0.350. After crossing the rough patch and returning to friction-free snow, she skis down an icy, frictionless hill 3.35 high. How fast is the skier moving when she gets to the bottom of the hill? How much internal energy was generated in crossing the rough patch?
A box slides down a 36° ramp with an acceleration of 1.26 m/s2. find the coefficient of kinetic friction between the box and the ramp.
A brick is initially 10.74 cm high and an aluminum can is initially 10.75 cm high. By how much must their temperatures be raised in order for the brick
A model rocket blasts off and moves upward with an acceleration of 13 m/s^2 until it reaches a height of 27 m, What is the speed of the rocket just before it hits the ground
A car of mass M= 900-kg travelling at 45.0 kmh enters a banked turn covered with ice. The road is banked at an angle, and there is no friction between road and car's tires.
An object of size 7.0 cm is placed at 27 cm in front of a concave mirror of focal length 18 cm. Find the size and the nature of the image
Compute the average linear velocity of the discus
How does the diameter of the lens affect magnification? How does the diameter of the lens affect the focal length?
What is the terminal speed for an 76.0kg skier going down a 38.0? snow-covered slope on wooden skis ?k= 0.060
Rubidium atoms are cooled to 0.22 uK in an atom trap. What is their de Broglie wavelength
The coefficient of kinetic friction is 0.250. Illustrate what should be the magnitude of P, so that the net work done by it and the kinetic frictional force is zero?
A 5.0 ? resistor is connected in series with another resistor and a 5.0 V battery. The current in the circuit is 0.70 A. Calculate the value of the unknown resistance
The specific heat of a 98 g block of material is to be determined. The block is placed in a 25 g copper calorimeter that also holds 60 g of water. Determine the specific heat of the block
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