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A 27 g ice cube at its melting point is dropped into an insulated container of liquid nitrogen, how much nitrogen evaporates if it is at its boiling point of 77 K and has a latent heat of vaporization of 200 kJ/kg? Assume for simplicity that the specific heat of ice is a constant and is equal to its value near its melting point.
Water is pumped steadily out of a flooded basement at a speed of 4.6 m/s through a uniform hose of radius 1.4 cm. What is the power of the pump
Suppose you want to connect your stereo to remote speakers; it requires 20 m length of wire per speaker, how does the resistance changes
A cable is connected at point A (1,2,3) and pulls towards point B (7,7,-1) the force in the cable is 100 pounds.
a 15cm diameter circular wire loop carries a current of 2.4a .a find the torque on the loop in a 1.4t magnetic field
A 6650kg iceberg with density 931 {\rm kg/m}^3 is afloat in seawater with density 1030 {\rm kg/m}^3, Find the volume of water displaced by the iceberg
A car of mass 930 kg is traveling over the top of a hill, If the hill has a radius of curvature of 38 m and the car is traveling at 13 m/s, what is the normal force between the hill and the car at the top of the hill
There is a second sphere identical to the first, except that its center is hollowed out so that it is empty from r = 0 to r = 10 cm. Find the electric field everywhere outside of this sphere
A super tanker with the mass of 3.36 × 109 kg is moving with a constant velocity. Its engines generate a forward thrust of 4.11 × 105 N. Determine (a) magnitude of the resistive force exerted on the tanker by the water and (b) magnitude of the upward..
A tuning fork with a frequency of 440Hz is held just above the top of a uniform glass tube containing water, What is the speed of sound in air
A floodlight with a mass of 23 kg is used to illuminate the parking lot in front of a library. the floodlight is supported at the end of a horizontal beam that is hinged to a vertical pole, as shown. a cable that makes an angel of 19 degrees with ..
Draw a free body diagram for the skateboarder at the bottom of the ramp
A uniformly accelerated car passes three equally spaced traffic signs. The signs are separated by a distance d = 21 m. obtain the magnitude of the acceleration of the car
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