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A mass is oscillating on a spring with a period of 4.6s. At t=0s the mass has zero speed and its x = 8.3 cm. What is the value of t the first time after t=0s that the mass is at x=4.15cm? What is the acceleration at t=2.5s?
A 65.0 kg human sprinter can accelerate from rest to 10 m/s in 2.90 s. all through the same interval, a 33 kg greyhound can accelerate from rest to 20 m/s. calculate (a) change in kinetic energy and (b) average power output for each.
An electric field of 8.60 x 107 V/m is desired between two parallel plates, each of area 35.0 cm2 and separated by 2.45 mm of air. What charge must be on each plate.
A heat engine with 0.500mol of a monatomic ideal gas initially fills a 1000cm^3 cylinder at 700K. How much work does this engine do per cycle
What is the maximum speed the car can have at point B for the gravitational force to hold it on the track.
The power radiated by a star is 8.0 x 10^30 W. What is the intensity of the radiation from this star at a distance of 1.0 x 10^12 m from the star
Plane polarized light of intensity is sent through a polarizer rotated 45 degrees clockwise to the original plane of polarizer, What is the incident intensity of original intensity
At the local grocery store, you push a 14.7-kg shopping cart. You stop for a moment to add a bag of dog food to your cart. With a force of 12.0 N, you now accelerate the cart from rest through a distance of 2.14 m in 3.00 s. What was the mass of the ..
A car moving at 10.0 m/s encounters a bump that has a circular cross-section with a radius of 30.0 m. What is the normal force exerted by the seat of the car on a 60.0-kg passenger
A supertrain of proper length 205 m travels at a speed of 0.87c as it passes through a tunnel having proper length 74 m. How much longer is the tunnel
Runner A is initially 4.6 km west of a flagpole and is running with a constant velocity of 4.8 km/h due east. What will be the distance of the two runners from the flagpole when their paths cross
A model rocket rises with constant acceleration to the height of 3.7, at which point its speed is 25. what was the magnitude of the rocket's acceleration.
Assume that a certain location on the Earth reflects 30.0% of the incident sunlight from its clouds and surface. (a) If the intensity of solar radiation is 1376 W/m2, what is the radiation pressure (Prad) on the Earth at this location?
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