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Skiing equipment with a mass of 587-kg is pulled across a frozen lake by a horizontal rope. If the ice has a coefficient of kinetic friction of 0.05, how much work (in J) is done by the Skiiers pulling their equipment 591-m at a constant velocity?
Two resistors (connected in series with each other) and a 18 Vbattery are connected in a loop. The voltage drop across the firstresistor is 7 V. What is the voltage drop across the secondresistor?
A particle attached to a spring with k = 51 N/m is undergoing simple harmonic motion, and its position is described by the equation x = (6.0 m)cos(8.1t), Estimate what is the maximum speed of the particle
Calculate the change in entropy of 250 g of water heated slowly from 20ºC to 80ºC.
using a rope, a child pulls a box across a rough floor at constant speed. The tension in the rope is 105 N and the rope makes an angle of 37 with the horizontal. Find the friction force acting on the box
A metal disk rotates on an axis through its center (I = 0.2 kg·m2) with angular velocity -3.3 radians/s, What is the resulting angular acceleration of the disk
If the ball's speed just before impact is 100 m/s, what is the angular speed of the rod immediately after the collision.
Task 1 concerns exploring the thermochromic behavior of cobalt chloride ethanol solutions (CoCl2(EtOH)3) with methanol (MeOH). You are to prepare
There is a pulley with no friction and the masses will not be affected by air resistance. Evaluate the acceleration of each mass
The radii of curvature of a bioconex lens are 30cm and 20cm. Calculate the longitudinal chromatic aberration for an object placed at infinity, given the refractive indices as Uv = 1.523 and Ut = 1.514.
two square oppositely charged conducting plates measure 19 on each side. the plates are close together and parallel to
A 3.90-cm tall pencil is placed 11.4 cm in front of a lens. An image is formed 4.40 cm on the same side of the lens as the object. What is the focal length of the lens?
A roller coaster at an amusement park has a dip that bottoms out in a vertical circle of radius r. how fast is the roller coaster traveling at the bottom of the dip
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