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Q1. A 653 kg lift starts from rest. It moves upward for 2.8 s with constant acceleration until it reaches a cruising speed of 1.85 m/s. What is an average power of its motor during this period (in kW)?
Q2. A wheel (radius = 0.20 m) is mounted on a frictionless, horizontal axle. A light rope wrapped around the wheel supports a 0.50-kilogram object, as shown below. When released from rest, the object falls with a downward acceleration of 5.0 m/s2. What is the moment of inertia of wheel?
What are the velocities of the two people after the snowball is exchanged. What is the greatest kinetic energy of the electrons removed from the cathode by this light.
Find the coefficient of friction between crate and floor
A doubly charged helium atom whose mass is 6.6 10 to 27 kg is accelerated by a voltage of 2200 V. What will be its radius of curvature if it moves in the plane perpendicular to a uniform 0.308 T field?
What is the maximum amount of energy the incident electron can lose in elastically in this collision? What is left over energy of the electron.
What is its velocity at impact? What will its average velocity be? What will its average speed be.
What is the magnetic field strength
A harmonic wave travels in a wire with amplitude 6.05 mm, wavelength 0.451 m, and frequency 462 Hz. What is speed with which the wave travels.
Find an angular velocity of the tire at the marker. Find also the linear speed of the point of contact of the tire with the pavement at the marker.
Find out an angle of the velocity vector
Illustrate energy bar graphs to solve the problem . What is amplitude of the oscillations.
Write three methods of increasing the volume of a balloon
What is corresponding free energy change
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