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A merry-go-round starts from rest and accelerates with angular acceleration 1.2×10?2 for 13. What is its average angular speed during the spin-up time?
A 5 cm tall object is placed 20 cm to the left of a converging lens with focal length of 10 cm. What is the magnification of the image
Communications satellites are placed in a circular orbit where they stay directly over a fixed point on the equator as the earth rotates. find the speed of a satellite in a geosynchronous orbit
A machinist turns the power on to a grinding wheel, at rest, at time t=0 s. What is the angular velocity in the time interval from t=0 to t=25s
To water the yard, you use a hose with a diameter of 3.5cm . Water flows from the hose with a speed of 1.5m/s. with what speed does water spray from the hose
Inductive battery chargers, which allow transfer of electrical power without the need for exposed electrical contacts, are commonly used in appliances that need to be safely immersed in water, Find an expression for the emf induced in the secondary..
Luigi wishes to suspend a lantern of mass m between his store and a telephone pole. THe cable attached to his store makes an angle (theta) to the wall. The cable to the telephone pole is horizontal.
A projectile is red from level ground at an angle of 30 degree above the horizon. It hits the ground at t = 4 s. What is the magnitude of the initial velocity, v?
a uniform rod of mass 2m is completely free to move and is initially at rest. a particle of mass m hits one of its ends
explain the electric flux through the surface of the cube. Calculate the volume charge density of the atmosphere, assuming it to be uniform between 270 and 420 m.
A Michelson interferometer uses light from glowing hydrogen at 486.6nm. As you move one mirror, 555 bright fringes pass a fixed in the viewer
an electron and a proton are each accelerated through a potential difference pf 10.0 million volts. Find the momentum ( in MeV/c) and the kinetic Energy ( in MeV) of each and compare with the results of using the classical Formular.
A particle (mass = 0.40 kg) moves in one dimension (x) and the potential energy is V(x) = (?1/2) q x2 with q = 7.35 J/m2. The initial conditions at t = 0 are velocity = 0 and position x0 = 2.9 m.
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