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A jar of water is boiling under one atmosphere of pressure. Suppose that heat enters the jar only through its bottom, which is copper and rests on a heating element. In 2 minutes, the mass of water boiled away is m=3.5 kilogram. The radius of the jar bottom is R=6.5 centimeter and the thickness is L=2.0 millimeter. Find the temperature of the heating element in contact with the jar?
Suppose that it takes exactly 12.0 hr to drain a container of 1.80 liters of water. What is the average mass flow rate (in kilograms/second) of water from the container
A vehicle attempting to aerbrake into orbit around Mars needs to achieve an equivalent deltaV(retro) of 2 km/s. what is the average drag force (in g's) we must attain
A 1000 kg experimental rocket sled on a level frictionless rail is loaded wiht 50kg of propellant. It exhausts the propellant in a 20-s "burn". If rocket, initially at rest, moves at 150m/s after the burn, what impulse is experienced by the rocket..
an optical pin is placed midway between two parallel plane mirrors m1 and m2 which are 10cm apart. how far from the
a 5 minute sample count yielded 500 counts. a 5 minute background measurement gave 125 counts. assuming negligible
q1. a 48-m length of wire is stretched horizontally between two vertical posts. the wire carries a current of 64 a and
consider a universe in which einsteins postulates and special relativity are valid but the speed of light c 200
How much current would flow if you directly connected a 20Ω resistor to a 0.01 Volt battery? What would this 500 μA meter read if it was inserted into this circuit ( in series)? Would the internal resistance of the 500 μA meter significantly alter..
Besides the gravitational force, a 3.40-kg object is subjected to one other constant force. The object starts from rest and in 1.20 s experiences a displacement of (5.50 - 3.30) m, where the direction of is the upward vertical direction. find the ..
The ball has the speed of 12.1 m/s and is moving in a direction of 33.4 degrees east of north, relative to the ground.
A cubical box with sides of length 0.305 m contains 1.760 moles of neon gas at a temperature of 285 K. What is the average rate (in atoms/s) at which neon atoms collide with one side of the container? The mass of a single neon atom is 3.35x10-26 kg
astronauts use a centrifuge to simulate the acceleration of a rocket launch. the centrifuge takes 40.0 s to speed up
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