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A skier is pulled up a slope at a constant velocity by a tow bar. The slope is inclined at 23.0° with respect to the horizontal. The force applied to the skier by the tow bar is parallel to the slope. The skier's mass is 55.3 kg, and the coefficient of kinetic friction between the skis and the snow is 0.110. Calculate the magnitude of the force that the tow bar exerts on the skier.
Ocean waves (on a particularly nice summer day) move past at 1.8 waves/s. find the speed of the waves
A laser beam is incident at an angle of 33.0° to the vertical onto a solution of cornsyrup in water. If the beam is refracted to 24.84° to the vertical, what is the index of refraction of the syrup solution?
n = 3.78 mol of Hydrogen gas is initially at T = 366 K temperature and pi = 2.88×105 Pa pressure. How much work did the external force perform
A 1260-kg car and a 2020-kg tow truck approach a curve on the expressway that has a radius of 235m. find the normal force on the car to the highway surface
Compute the distance of two point's p1 and p2 in the x-y plane with the following Cartesian coordinates: p1= (-5m, +8m), p2= (+3m, +2m). Draw the position vectors into appropriate-points.
If a blue filter is placed over a light source aperture so that the incident rays are blue and these rays pass through a red filter, what color should the reflected rays be? Based on these observations, what makes the red filter appear red?
A 1200-kg car rolling on a horizontal surface has speed = 65km/h when it strikes a horizontal coiled spring and is brought to rest in a distance of 2.3m. What is the spring stiffness constant of the spring?
an electrical conductor designed to carry large currents has a circular cross section 2.30 in diameter and is 14.9
A mass of 1.60 kg stretches a vertical spring 0.335 m. If the spring is stretched an additional 0.164 m and released, how long does it take to reach the (new) equilibrium position again.
How fast must a rocket travel on a journey to and from a distant star so that the astronauts age 12.0 years while the Mission Control workers on earth age 110 years? As gauged by Mission Control, how far away is the distant star?
q1. suppose you discover a type ia supernova in a distant galaxy. at maximum brilliance the supernova reaches an
A hot-air balloon of diameter 12 m rises vertically at a constant speed of 11m/s. how high is the railing when the camera hits the ground
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