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A 60-N toolbox is dragged horizontally at constant speed by a rope making an angle of 35° with the floor. The tension in the rope is 40 N. Determine the magnitude of the normal force.
The ball curves because it is spinning at an average angular velocity of 370 rev/min (assumed constant) on its way to the catcher's mitt. Illustrate what is the angular displacement of the baseball (in radians) as it travels from the pitcher to t..
A 1.0-cm-tall object is 7.5 cm in front of a diverging lens that has a 10 cm focal length. Determine the image height by making measurements on your diagram
A 5.00 kg block slides down the inclined plane at 20 angle as shown in the diagram below at a constant velocity. Calculate the net work done by both gravity and friction
A boy is standing on a frozen lake (i.e. no friction) holding a rope that is attached to his sled. He pulls on the rope and exerts a horizontal force of 5.2 N, What is the acceleration of the boy
A 0.2 kg steel ball is dropped straight down onto a hard, horizontal floor and bounces straight up. FIND the magnitude of the impulse delivered to the floor by the steel ball
A concave mirror is of hemisphjerical shape with radius 40cm. A thin layer of unknown transparent liquid is poured into mirror. The mirror liquid forms a real image and another real image is formed by the mirror alone.
Two ice skaters, with masses of 30.0kg and 65.0kg , are at the center of a 60.0m -diameter circular rink. If the heavier skater reaches the edge in 40.0s , how long does the lighter skater take to reach the edge
A light spring-gun projectile launcher is mounted on an 0.453 kg air track glider. The gun points upward at an angle of 32 o with the horizontal track. What is the speed of the air-track glider after the gun is fired
A sound source emits sounds of frequency 190 Hz that travel by still air at 340 m/s. The listener moves at 75 m/s relative to still air toward the stationary source. What is the wavelength of the sound between source and listener.
A satellite is in a circular orbit around an unknown planet. The satellite has a speed of 1.65 104 m/s, What is the orbital speed of the second satellite
Four equal positive point charges, each of charge 5.7?C , are at the corners of a square of side 9.2 cm. What charge should be placed at the center of the square
A golf ball is hit off a tee at the edge of a cliff. Its x and y coordinates as functions of time are given by x = 19.9t and y = 4.08t ? 4.53t2, obtain the expression for the acceleration vector as a function of time
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