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A parallel plate capacitor is charged to 100v.its plate separation is 2mm and the area of separation of each plate is 120cm^2.calculate and account for the increase and decrease in energy when separation is reduced to 1mm at constant voltage and charge
Two spherical objects have masses of .6 *10^ 7 kg and 7.3*10^ 5 kg The gravitation attraction between them is 90N. How far apart are their centers?
Two spherical objects have masses of .6 *10^ 7 kg and 7.3*10^ 5 kg The gravitation attraction between them is 90N. How far apart are their centers?
Determine the force of gravitational attraction between the earth (m = 5.98 x 1024 kg) and a 65-kg physics student if the student is in an airplane at 40000 feet above earth's surface. This would place the student a distance of 6.39 x 106 m from earth's center.
On its maiden voyage in July 1952, the liner United States won the coveted Blue Ribbon for the fastest crossing of the Atlantic from New York to Cornwall, U.K. The trip took 3 days 10 hours 40 min at an average speed of 34.5 knots (65.5 km/h). This was 10 h 2 min less than the 14-year-old record held by the Queen Mary. What was the average speed of the Queen Mary ?
8) On its maiden voyage in July 1952, the liner United States won the coveted Blue Ribbon for the fastest crossing of the Atlantic from New York to Cornwall, U.K. The trip took 3 days 10 hours 40 min at an average speed of 34.5 knots (65.5 km/h). This was 10 h 2 min less than the 14-year-old record held by the Queen Mary. What was the average speed of the Queen Mary
2) After using your DVD player to watch a movie, you pressed the “stop” button, and the disc started to slow down. Initially, the disc is rotating at 30.0 rad/s, and then slos down at a constant rate of 10.0 rad/s². At the same time, line AB on the disc is at the x-axis as shown in the figure. (a) What is the angular velocity of the disc at t = 0.400 s? (b) Find the angle that line AB makes with the x-axis at the given time.
A 55 kg gymmast suspends herself from the lower end of a hanging rope of negligible mass. The upper end of the rope is attached to the gymnasium ceiling (a) What is the gymnast weight? (b) What is the tension at the top of the rope?
1. A 55 kg gymmast suspends herself from the lower end of a hanging rope of negligible mass. The upper end of the rope is attached to the gymnasium ceiling (a) What is the gymnast weight? (b) What is the tension at the top of the rope?
2. A man pushed a 1,000 kg car to the +x direction. If the applied force is 5000N, what is the acceleration of the car if the coefficient of the friction force is 0.57
