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The rms speed of an oxygen molecule (O2) in a containerof oxygen gas is 700 m/s. What is the temperature of the gas?
a 200 g block is dropped onto a relaxed vertical spring that has a spring constant of k 3.0 ncm. the block becomes
William Tell is shooting at an apple that hangs on a tree. The apple is a horizontal distance of 20.0 m away and at a height of 4.00 m above the ground. what is the arrow's initial velocity
an electron with a velocity of v 3x 4y 2z times 106 ms enters a region where there is both a magnetic field and an
A new circus act features a large frictionless cannon with an 2500 N/m spring mounted at the bottom of a long barrel which makes an angle of 37.0o with the horizontal. Find the speed of the acrobat when he reaches the top of the barrel. Use energy ..
The model rocket is fired vertically from rest. It has a net acceleration of 17.5m/s2. After 1.5s, its fuel is exhausted and its only acceleration is that due to gravity. how high does the rocket travel
A very hard rubber ball (m = 0.7 kg) is falling vertically at 9 m/s just before it bounces on the floor. find the average force exerted by the floor on the ball
Analysis of Physics, Two pistons push down on the fluid filling two cylinders connected by a narrow hose, as shown in the figure. The area A1 is 1 square inch, and the area A2 is 10 square inches
A person driving her car at 49 km/h approaches an intersection just as the traffic light turns yellow. She knows that the yellow light lasts only 2.0 s before turning to red, and she is 30 m away from the near side of the intersection .
A conducting sphere of radius 0.26 m has a potential of 240 V (with V = 0 at infinity). What is the charge density on its surface
a house is heated by 24 kq electric furnace using resistance heating if 9 J are used. How long was the furnace running in an acerage Jan day
The earth has a radius of 6.38 x 106 m and turns on its axis once every 23.9 h. (a) What is the tangential speed (in m/s) of a person living in Ecuador, a country that lies on the equator? (b) At what latitude (i.e., the angle in the figure, in degre..
A light bulb has a tungsten filament. When the bulb is just turned on and its temperature is 20? C, the current in the bulb is 0.86 A. What is then the temperature of the filament
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