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A car moving with a velocity of 55 km/h accelerates uniformly at the rate of 2 m/s2. Calculate a.) the distance traveled from the place where the acceleration began to that where the velocity is 72 km/h. b.) the time taken to cover the distance.
A softball having a mass of 0.45 kg is pitched horizontally at spring with spring constant 78 N/m. how fast was the softball moving initially
A double-slit interference experiment is performed with light from a laser. The separation between the slits is 0.59 mm, What is the wavelength of the laser light
Calculate the force of gravity on a spacecraft 32000 km (5 earth radii) above the Earth's surface if its mass is 1800 kg. N (toward the earth)
Let 20.9 J of heat be added to a gas. As a result, Its volume changes from 50.0 to 100.0 cm^3 while the pressure remains constante at 1 atm. By how much did the internal energy of the gas change?
A generator has a square coil consisting of 500 turns. The coil rotates at 82 rad/s in a 0.49 T magnetic field. What is the length of one side of the coil
If its length is 49.8 m when measured from inside the spacecraft, what is its length measured by a ground observer
A car undergoes a displacement of 500m due east, followed by another displacement due south of 1200m. Calculate the total distance traversed by the car
A certain concrete will support a maximum compressive stress of 1.12 107 N/m2 before being crushed. A column of uniform width is to be made with this concrete. How tall can the column be if the stress in it at any point is not to exceed one fifth the..
What is the oscillator's total mechanical energy as it passes through a position that is 0.749 of the amplitude away from the equilibrium position
you find an unlabeled box of fine needles and want to determine how thick they are. a standard ruler wont do the job
Determine the amount by which the star's thermal radiation increases the entropy of the universe each second. Assume that the star is a perfect blackbody, and that the average temperature of the rest of the universe is 2.73 K. Do not consider ther..
when moving a convex lens toward and away from your eye it reaches a point where the entire lens appears to be a single
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