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A child is twirling a 0.0165-kg ball on a string in a horizontalcircle whose radius is 0.130 m. The ball travels once around the circle in 0.649 s. (a) Determine the centripetal force acting on the ball. (b) If the speed is doubled, by what factor does the centripetal force increase?
a 1 m long solenoid carries a current of 10000 a. if the magnetic field at the center of the solenoid is 80 tesla how
Two spherical objects have a combined mass of 190 kg. The gravitational attraction between them is 8.26×10?6 N when their centers are 17.0 cm apart. What is the mass of the heavier object
Two objects with masses of 3.70kg and 7.80kg are connected by a light string that passes over a frictionless pulley. Determine the acceleration of each object
power is generated at 24 kv at a generated plant located 118 km from a town that requires 50 mw of power at 12 kv. two
A tow truck is pulling a car out of a ditch by means of a steel cable (Y = 2.0 x 1011 N/m2) that is 8.24 m long and has a radius of 0.402 cm. How much has the cable stretched
A loudspeaker of mass 15.0 is suspended a distance of h = 2.30 below the ceiling by two cables that make equal angles with the ceiling. Each cable has a length of l = 3.30. What is tension in each cable.
Nichrome wire of cross-sectional radius 0.754 mm is to be used in winding a heating coil. find the length of wire you must use to wind the coil
1 what are the differences between electric insulators and conductors?2 the electric field between two large conducting
a 96 g piece of ice at 0.0degc is placed in an insulated calorimeter of negligible heat capacity containing 100 g of
A car is traveling around a horizontal circular track with radius r = 150 m at a constant speed v = 28 m/s as shown, What is the magnitude of the car's acceleration, What is the x component of the car's acceleration when it is at point A
A 2500ml - flask is initially open to air at 24 celsius and 1 atm pressure. It's then closed and immersed in boiling water. What's the maximum pressure reached in the flask
A "light-year" is the distance light (speed = 2.998 108 m/s) travels in one year. What is the speed of light in AU/h
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