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A current-carrying wire passes through a region of space that has a uniform magnetic field of 0.76 T. If the wire has a length of 2.8 m and a mass of0.68 kg, determine the minimum current needed to levitate the wire.
Water flows through a horizontal tube of diameter 3.0 m that is joined to a second horizontal tube of diameter 2.2 . The pressure difference between the tubes is 8.0 kpa . Find out the speed of flow in the first tube.
A vertical scale on a spring balance reads from 0 to 245 rm{N}. The scale has the length of 11.0 rm{cm} from the 0 to 245 rm{N} reading. A fish hanging from bottom of the spring oscillates vertically at a frequency of 3.00 rm{Hz}.Ignoring the mass..
A sealed tank containing seawater to the height of 11.10 m also contains air above the water at a gauge pressure of 3.20 atm. Water flows out from the bottom throughout a small hole.
A long vertical wire carries an unknown current. Coaxial with the wire is a long, thin, cylindrical conducting surface that carries a current of 31.7 mA upward, what is the current (in A) in the wire
Two metal cubes, one copper and one aluminum, with sides of length a are arranged as shown, find the thermal resistance of each cubeb
The Mini Cooper is rated at the maximum power of 115. hp (1 hp=746 W), when moving at 80km/h. Suppose that the net force accelerating the car is constant.
A 282 kg log is pulled up a ramp by means of the rope that is parallel to the surface of the ramp. The ramp is inclined at 23.0° with respect to the horizontal. The coefficient of kinetic friction between the log and the ramp is 0.87, and the log has..
Two liquids, A and B, are mixed together, and the resulting temp is 22C. If liquid A has mass m and was initially at temp 35C, and liquid B has mass 3m and was initially at temp 11C, cacluatle the ratio of the specific heats of..
If electrons are accelerated from rest in an electron gun by sending them through a potential difference of 11.0 kV, what is the resulting kinetic energy of each electron?
A small solid sphere, with radius 0.25 cm and mass 0.56 g rolls without slipping on the inside of a large fixed hemisphere with radius 15 cm, What is its kinetic energy at the bottom
What is the size of the gravitational force that the Earth exerts on the Moon.
Two objects have masses m and 5m respectively.They both are placed side by side on a frictionless inclined plane and allowed to slide down from rest.
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