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Two resistors, A and B, are connected in parallel across a 6.0 V battery. The current during B is found to be 2.0 A. When the two resistors are associated in series to the 6.0 V batteries, a voltmeter connected across resistor A gauges a voltage of 4.0 V. Discover the resistances of A and B.
A jet rises vertically, caring a load of concrete to make the foundation for a ski lift. A 35 kilogram bag of concrete is resting on a scale in the jet. what is the jet's acceleration
A 300 g object attached to the end of a spring oscillates with an amplitude of 7 cm and a frequency of 1.80 Hz. Find its maximum speed and maximum acceleration
Consider a uniform thin rod of length 2.00 m and mass 1.00 kg is lying on a smooth horizontal table. How far does the center of mass of the rod travel during the time it takes to make one complete revolution
A 60.0-kg skater begins a spin with an angular speed of 6.0 rad/s. By changing the position of her arms, the skater decreases her moment of inertia by 50%. Find the skater's final angular speed?
A wheel rotating with a constantangular acceleration turns through 22 revolutions during a 3 s timeinterval. What is the angular acceleration of the wheel
The A string on a cello vibrates in its first normal mode with a frequency of 220 Hz. Determine the frequency of vibration when the string vibrates in three segments
A tennis player standing 12.6 m from the net hits the ball at 2.79° above the horizontal. how fast was the ball moving when it left the racket
A cylindrical tube is closed at both ends by glass plates 10.0mm thick. if the inside length of the tube is 7.5 cm, what is the total optic path length between the outer surfaces
The centers of a 12 kg lead ball and a 100 g lead ball are separated by 10 cm. What gravitational force does each exert on the other
A light ray of λ = 410 nmenters at an angle of incidence of 37.6o from air into ablock of plastic. What is the speed of the light inside the plastic
A physics student is standing on an initially motionless,frictionless turntable with rotational inertia 0.31kg·m2. He's holding a wheel of rotational inertia0.22 kg·m2 spining at 135 rpm about a vertical axis,
Three point charges are located on the x-axis. The first charge q1 = 10.0μC at x =1.0m; the second charge, q2 =20.0μC, is at the origin, and the third charge is q3=30.0μC is located at x =2.00m. Decide the potential energy of this arrangement
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