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A 4-kg rock is tied to the end of a string and twirled overhead, 1.7 m above the ground, in a 1.1-m radius, horizontal circle. The string is known to break if its tension reaches a value of 534 N. The rock it rotated faster and faster until the string breaks. How far away from its location when the string breaks will the rock hit the ground? Your answer should be given in meters, to the nearest centimeter.
a typical hard drive in a computer spins at 5400rpm. what is the period in seconds
A tungsten wire has a radius of 0.070 mm and is heated from 20.0 to 1330 oC. The temperature coefficient of resistivity is ? = 4.5 x 10-3 (Co)-1, How long is the wire
A resistor of unknown resistance and a 42.0-? resistor are connected across a 123.0-V emf device in such a way that an 10.0-A current flows
Four copper wires of equal length are connected in series. The cross sectional areas are 1 cm2, 2 cm2, 3 cm2, and 5 cm2, What is the voltage across the 2 cm2 wire in units of volt
When additional mass is added to the piston, the height of the piston decreases to 16.4 cm. Find out the new pressure applied by the piston.
A 1.00 kg block of copper at 20.0°C is lowered into a large insulated container of liquid ammonia at its boiling point (-33.3°C). determine the mass of liquid ammonia that boils away before thermal equilibrium
A dam is used to block the passage of a river and to generate electricity. Approximately 5.73 x 10^4 kg of water fall each second through a height of 19.6 m. I one half of the gravitational potential energy of water were converted to electrical energ..
A frictionless pulley has the shape of a uniform solid disk of mass 4.00 kg and radius 28.0cm. A 3.60 kg stone is attached to a very light wire that is wrapped around the rim of the pulley, and the stone is released from rest. As it falls down, the w..
A wave on a Slinky has a frequency of 1.69 Hz. It takes 4.1 s to travel the length of the Slinky (0.29 m). What is the wavelength.
Two parallel plates 0.600cm apart are equally and oppositely charged. An electron is released from rest at the surface of the negative plate and simultaneously a proton is released from rest at the surface of the positive plate. How far from the n..
Find the speed of the waves on an 800.0 mg violin string 21.7-cm long if the fundamental frequency is 912.0 Hz. find the wavelength of the sound waves emitted by the string
What will the force be between these charges. What should the banking angle of the curves be so that the force of the pavement on the tires of the car is in the normal direction.
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