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Two skaters, one with mass 65 kg and the other with mass 40 kgstand on an ice rink holding a pole of length 10 m and negligiblemass. Starting from the ends of the pole, the skaters pullthemselves along the pole until they meet. How far does the 40 kg skater move?
You perform a double-slit experiment in order to measure the wavelength of the new laser that you received for your birthday. What is your laser\'s wavelength expressed in nanometers
A rock is dropped from a high tower and falls freely under the influence of gravity. Which one of the following statements concerning the rock as it falls is true? Neglect the effects of air resistance.
A car of 1200 kg travels east at 24 m/s while a truck of 2200 kg travels north at 19 m/s They collide and stick together. a) What is the momentum in the system? b) What is the final velocity (magnitude and direction) after the collision?
A 170g mass attached to a horizontal spring oscillates at a frequency of 3.70Hz. Determine the maximum speed, the maximum acceleration, total energy, and position at t=3.40s.
Find out the precession period of the axis
The gravitational potential energy of all the water stored behind avery large dam is 1.2×1016 J, using the base of the damas the reference point for zero PE.
A transformer has 330 primary turns and 1340 secondary turns. The input voltage is 120 V the output current is 15 A. What are the output voltage and input current
An ideal refrigerator utilizes a Carnot cycle operating between 0 degree C and 26 degree C. How much energy must be supplied to the refrigerator
The altitude of a hang glider is increasing at a rate of 6.80 m/s. At the same time, the shadow of the glider moves along the ground at a speed of 15.5 m/s when the sun is directly overhead. Calculate the magnitude of the glider’s velocity.
A force of 315 N is applied horizontally to a wooden crate in order to displac eit 35.0 m accorss a level surface at a constant velocity. As a result of this work the crate's internal energy is increased by an amount equal to 14 percent of the cra..
A 6-kg bucket of water is being pulled straight up by a string at a constant speed. What is the tension in the rope
A woman stands on a scale in a moving elevator. Her mass is 55.0 kg, and the combined mass of the elevator and scale is an additional 755 kg. What does the scale read (in N) during the acceleration
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