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Two vertical cables are attached to each end of a 5.00 m long uniform pole that has a mass of 16.0 kg.
Two rods AB and BC have charges +2Q and -2Q uniformly distributed on them. They are bent in the shape of arcs of a circle and joined at B. Find the linear charge density on rod AB. Find the electric field at the midpoint between A and C.
A water storage tower, is filled with freshwater to a depth of 6.4m. It has a circular basin with and Are of 30m^2. What is the weight(force) of water the basin supports
a metal sphere centered at the origin carries a surface charge density of 24.6 ncm2. at r 2.0m the potential is 500v
A jeweler working awith a heated 47 g gold ring must lower the ring's temperature to make it safe to handle. If the ring is initially at 99 C, what mass of water at 25 C is needed to lower the rings temperature to 38 c.
An inflatable bag is located in the dashboard of a car. In a collision, the bag expands abruptly and cushions the impact of the passenger. The forward motion of the passenger should be stopped in about 30 cm of motion if contact with the hard surface..
A solenoid 300 turns having a length of 25.0 cm and a diameter of 10.0 cm has a current of 0.290 A.
A sound source is moving at 85 m/s toward a stationary listener that is standing in still air. In the reference frame of the source, the listener and the air are moving toward the source at 85 m/s and the source is at rest.
Find the two times the ball is at the height y = ½ h. Show the final formula and the numerical answers.
3 mol of an ideal gas at 20 °C and at 1 bar is added an amount of heat of 1 kJ in a reversible isotherm expansion process. What is volume of the gas before and after the process?
A 565 N mountain climber moves across a rope strung across a canyon. When she is more than halfway across, What are the tensions in the rope in front and behind her
The work function for cesium, 1.81 eV, is much lower than the work function for other metals. What is the photoelectric cut-off wavelength? What is the maximum electron kinetic energy when cesium is illuminated with light of 512-nm wavelength?
A wagon is rolling forward on level ground. Friction is negligible. The person sitting in the wagon is holding a rock. The total mass of the wagon, rider, and rock is 95.0 kg. The mass of the rock is 0.300kg.
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