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A particular vacuum flask has a mass of 1 kilogram and contains 1 liter of liquid water. A heating element within the flask vaporizes the water, which exits through a nozzle on the mouth of the flask. (Assume the cap/stopper on the flask is massless and can be ignored.) The vapor escapes with a spreed of 25 meters per second relative to the tank. If all the vapor exits instantaneously:
(a) what is the speed of the empty flask? Assume its initial velocity is zero.
(b) how much energy did the heating element supply? You can disregard the energy needed to warm and vaporize the water.
Objects A and B are both positively charged. Both have a mass of 400g , but A has twice the charge of B. When A and B are placed 25cm apart, B experiences an electric force of 0.54N . What is the charge on A? If the objects are released, what is t..
A cylindrical tube is closed at both ends by glass plates 10.0mm thick. if the inside length of the tube is 7.5 cm, what is the total optic path length between the outer surfaces
A 0.350 m rod with uniform mass distribution runs along the x axis with its left end at the origin. A 1.80 m rod with uniform mass distribution runs along y axis with its top end at the origin. Find out the coordinates of the center of gravity for..
If there had been no explosion, the shell would have landed a distance from the mortar. Suppose that air resistance and the mass of the shell's explosive charge are negligible. Determine the distance from the mortar at which the larger piece of th..
A person desires to reach a point that is 3.40 km from her present location and in a direction that is 350 north of east. However, she must travel along streets that are oriented either north-south or east-west. What is the minimum distance she mi..
Illustrate what management's role in addressing these challenges. Illustrate what type of information technology would increase production?
A 1.5 {rm kg} block rests on top of a 7.5 {rm kg} block. The cord and pulley have negligible mass, and there is no significant friction anywhere. What force F should be applied to bottom block so the top block accelerates to the right at 2.60 m/s^..
A 79.2 kg airplane pilot pulls out of a dive by following, at a constant speed of 191 km/h, the arc of a circle whose radius is 321m.
estimate the gravitational potential energy of the system relative to the lowest point of the motion when the cat is at its highest point.
A car traveling at 24 m/s runs out of gas while traveling up a 9 degree slope. How far will it coast before starting to roll back down.
Gillian buys a pendulum clock at a discount store and discovers when she gets it home that it loses minutes each day.
A bomb is dropped from an airplane in level flight at a speed of 970 km/h. The altitude of the aircraft is 2000 m. At what horizontal distance from the initial position of the aircraft will the bomb land.
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