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In a physics lab experiment, a spring clamped to the table shoots a 22 g ball horizontally. When the spring is compressed 22 cm, the ball travels horizontally 5.2 m and lands on the floor 1.5 m below the point at which it left the spring. What is the spring constant?
At one instant a bicyclist is 25m due east of a park's flagpole, going due south with a speed of 8 m/s. Then, 11 s later, the cyclist is 65m due north of flagpole, going due east with a speed of 10 m/s.
An automobile having a mass of 1,000 kg is driven into a brick wall in a safety test. The bumper behaves like a spring with constant 5.55 106 N/m, What was the speed of the car before impact
This problem is in a beaker. The large container shown in the picture above is filled with a liquid of density 1.1E3 kg/m3. A small hole of area A=2.5E-6 m2 is open in the side of the container a distance h below the liquid surface, which allows a..
the speed of light in a vacuum is 3108 ms . the speed of light whitin a particular substance is 1.5 108 ms. the index
After the ambulance passes, the observed frequency of the siren is 493 Hz. Conclude the ambulance's speeds from these observations.
The electron in a hydrogen atom is in the first excited state, What is the quantum number n of the state into which the electron moves
A grinding wheel of radius 0.280 m rotating on a frictionless axle is brought to rest by applying a constant friction force tangential to its rim. Find the magnitude of the friction force
What is the coefficient of kinetic friction between sled and incline? (Enter 0 if sled does not move.)
Find A (Vector potential of the Magnetic dipole) on a diagonal of a square side S and of current I at a distance Sqrt(2)S from the corner.
An ideal gas is compressed from a volume of 400 cm^3 to a volume of 150 cm^3 slowly and isothermally in a piston-cylinder system. If the final pressure is 100 kPa, determine a) the work done on the gas and b) the heat transfer (specify whether the..
Suppose you're building a scale model of the hydrogen atom, How many miles away (1 mi = 1.61 Ã- 105 cm) should the electron be placed
Two spherical objects have a combined mass of 200. The gravitational attraction between them is 8.01×10-6 while their centers are 21.0 apart.
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