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A car, moving along a straight stretch of high-way, begins toaccelerate at 0.0345 m/s2. It takes the car 70.9 s to cover 1 km. How fast was the car going when it first began to accelerate?
Three point charges, -6.05 10-9 C, -9.40 10-9 C, and +7.25 10-9 C, are fixed at different positions on a circle. What is the radius of the circle
Four particles, each of mass 20.0 g, that form a square with an edge length of d = 0.800 m. what is the change in the gravitational potential energy of the four-particle system
Suppose a tank contains 624 m3 of neon (Ne) at an absolute pressure of 1.01 105 Pa. What is the increase in the internal energy of the neon
a revolving car wheel has a radius of 15m and a mass of 3 X 10^4 kg. what torque needs to be applied to stop the car wheel in 15 sec
a rod (length 3 meters, mass 1 kg) is pinned at its end so the stick can rotate freely in a plane parallel to a tabletop. Where along the rod is the force applied
The surface pressure on Venus is 92.00 atm, and the acceleration due to gravity there is 0.894 g. What total inward force does the atmosphere exert on the vertical walls of the tank
A constant-pressure insulated piston-cylinder device contains 1.7 kg of saturated liquid-vapor mixture of water at 150 kPa with an initial quality of 0.2. Calculate the change in exergy of the contents in kJ
A space station is constructed in the shape of a hollow ring of mass 5.90 104 kg and radius 140 m. The station has 300 crew members (each with average mass 65kg), How much work is done to get the space station spinning
As the captain of the scientific team sent to Planet Physics, one of your tasks is to measure g. You have a long, thin wire labeled 1.41g/m and a 1.30kg weight. You have your accurate space cadet chronometer but, unfortunately, you seem to have fo..
A block of mass m1= 0.50kg placed in top of another block of mass m2= 0.80 kg, which rests on a frictionless surface. A horizontal force of 2.0N is applied to the lower block. Find the acceleration of the system of two blocks
A spaceship of proper length 306 m takes 0.70 µs to pass an Earth observer. find the speed of this spaceship as measured by the Earth observer.
A ball of mass 10.7 g with a speed of 27.1 m/s strikes a wall at an angle 24.0o and then rebounds with the same speed and angle. calculate the average force exerted by the ball on the wall
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