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A child is twirling a 0.0215-kg ball on a string in a horizontal circle whose radius is 0.143 m. The ball travels once around the circle in 0.586 s.
(a) Determine the centripetal force acting on the ball.
(b) If the speed is doubled, by what factor does the centripetal force increase?
Solar Energy Reaches the earth at the rate of about 1400 watts per sqaure meter of surface perpendicular to the direction of the sun. By how much does the mass of the sun decrease
Two identical capacitors are connected in parallel to an ac generator that has a frequency of 579 Hz and produces a voltage of 24 V. What is the capacitance of each capacitor
A horizontal force of 35_N is used help push an 44_kg box up a 13_meter incline. What is the work done by this applied force
A uniform meter stick is freely pivoted about the 0.20-m mark. If it is allowed to swing in a vertical plane with a small amplitude and friction, what is the frequency of its oscillations
An object with a mass of m = 4.9 kg is attached to the free end of a light string wrapped around a reel of radius R = 0.265 m and mass of M = 3.00 kg. Determine the magnitude of the acceleration of the object
You are part of a searchand- rescue mission that has been called out to look for a lost explorer. What minimum speed must the rocket have just before impact in order to save the explorer%u2019s life
An AC power generator produces 54 A (rms) at 3600 V. The voltage is stepped up to 100000 V by an ideal transformer, What percentage of the power delivered by the generator is dissipated as heat in the power line
The left end of a long glass rod 7.00cm in diameter has a convex hemispherical surface 3.50cm in radius. The refractive index of the glass is 1.60. How far from the left end of the rod must the object be located to form the image
a 5.0 kg ball is initially sitting at rest on top of a 48 meter hill. the ball is pushed with a force of 25 n for 3.0 s
A 2.40kg mass is pushed against a horizontal spring of force constant 26.0N/cm on a frictionless air table. The spring is attached to the tabletop, Find the greatest speed the mass reaches
Consider a box with a lid 1.5m wide and 0.70m long. If the inside of the box is evacuated (i.e.,its pressure is zero), how much force is required to open the lid
Captain Planet measures the magnetic forces on a proton which is vertically falling at 1996. m/s at the equator, What FORCE would she measure
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