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A closed gas system initially has volume and temperature of 4360mL and 646.0C with the pressure unknown. If the same closed system has values of 0.689atm, 7670mL and 619 K, what was the initial pressure in torr?
the earth completes a circular orbit around the sun in one year. what is the speed of the earth around the sun
A force vector has a magnitude of 577 newtons and points at an angle 43o of below the positive x axis. What is (a) x scalar component and (b) y scalar component of the vector.
A piano tuner sounds two strings simultaneously. One has been previously tuned to vibrate at 283.0 Hz. The tuner hears 5.0 beats per second. What was the original frequency of the untuned string
An object is dropped from the top of a tower at a height of 44.1 m. How much time does the object take to reach the ground
What is the greatest possible distance from the wall
A 52-kg mountain climber, starting from rest climbs a vertical distance of 730m. At the top, she is again at rest. Find her efficiency as a heat engine
A solid sphere rolls without slipping or sliding along a horizontal surface toward an incline. Calculate the kinetic energy of sphere as it rolls along the horizontal surface
A uniform electric field points midway between the positive x and y axies. Its strength is 100Volts/m. A -50nC charge is placed at the position ( 2m, 3m ) and fixed in place. What are the components of the total electric field at the location (..
A horizontal 2.00-m long, 5.00-kg uniform beam that lies along the east-west direction is acted on by two forces. At the east end of the beam, What is the angular acceleration of the beam
Electrons are ejected from a metallic surface with speeds ranging up to 4.5 105 m/s when light with a wavelength of ? = 625 nm is used. What is the work function of the surface
A seasoned mini golfer is trying to make par on a tricky hole #5. The golfer can complete the hole by hitting the ball from the flat section it lays on, at what speed must the golfer hit the ball to land the ball in the hole
Suppose your weight has been constant, but then - after being introduced to really good chocolate - you start eating 100 extra food calories (recall, 1 food calorie is really 1kcal or 1000 calories of energy) every day without otherwise adjusting ..
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