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At t=0 a wheel rotating about a fixed axis at a constant angular acceleration has an angular velocity of 2 rad/s.Two seconds later it has turned through 5.0 complete revolutions. what is the angular acceleration of this wheel?
An object of mass 5 kg is dropped from a certain height. Just before it strikes the ground it has a kinetic energy of 1250 J. From what height was the object dropped
A cue ball (mass = 0.145 kg) is at rest on a frictionless pool table. The ball is hit dead center by a pool stick, which applies an impulse of +1.15 N · s to the ball. Find the velocity of the second ball just after it is struck
electric charge is uniformly distributed inside a nonconducting sphere of radius 0.30 m. the electric field at a point
A person decides to use an old pair of eyeglasses to make someoptical instruments. What is the maximum angular magnification he can produce
A pipe carrying 20°C water has a diameter of 3.5 cm. Estimate the maximum flow speed if the flow must be streamline
A 2.2mH inductor is connected in parallel with a variable capacitor. What is the minimum oscillation frequency for this circuit
A net force of 36N accelerates a 5.1-kg mass over a distance of 12 m. What is the increase in kinetic energy of the mass
A wire 3.00 m long and 0.450 mm2 in cross-sectional area has a resistance of 39 at 20°C. what is the temperature coefficient of resistivity
A certain projectile is launched with an initial speed v0. At its highest point its speed is v0 / 4. What was the launch angle
a current of 24.0 ma is maintained in a single circular loop with a circumference of 2.70 m. a magnetic field of 0.520
an airplane with a speed of 80.0 ms is climbing upward at an angle of 62.4 deg with respect to the horizontal. when the
two identical capacitors store different amounts of energy capacitor a stores 2.4 x 10-3 j and capacitor b stores 6.7 x
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