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A 18 liter tank of helium is at a pressure of 192 kPa at a temperature of 0 C. A.) How many moles of helium are there in the tank? B.) If the volume of the tank expands to twice its initial volume at constant pressure, what is the new temperature? C.) What is the speed of the helium atoms in the tank at this new volume?
An airplane with a wing span of L = 27m flies horizontally at a location where the vertical component of the Earth's magnetic field is B = 6.0 x10 -5 T.
During a hard sneeze, your eyes might shut for 0.50s. If you are driving a car at 90 km/h during such a sneeze, how far does the car move during time.
I put a material on top of it, and it only took one rotation--or crank--to knock the material off from the machine and onto the ground.
Ignoring friction and air resistance, find the maximum height H to which she rises above the end of the track.
Two rocks are thrown off the edge of a cliff that is 15.0 m above the ground. The first rock is thrown upward, at a velocity of +12.0 m/s. The second is thrown downward, at a velocity of 12.0 m/s.
The jumping squirrel. A squirrel wants to jump from a point A on a branch of a tree to a point B on another branch. The horizontal distance from A to B is x = 5 ft, and the vertical distance is y = 4 ft. If the squirrel jumps with an initial speed..
A plastic rod is rubbed against a wool shirt there by aquiring the charge of -0.80 mC. how many electrons are transfered from the wool shirt to the plastic rod.
How far below the release point is the center of mass of two stones at t = 550 ms? (Neither stone has yet reached the ground.)
A calorimeter contains 2000 grams of water at 0oc. a jet of stream at 100oc is passed through the water. What is the temperature of the water when 100 grams of steam have condensed in it.
Each cable has a length of l = 2.70 -{rm m}. What is the tension T in each of the cables? Use 9.80- {rm m/s}^2 for the magnitude of the acceleration as a result of gravity.
An electron accelerated from rest through a voltage of 350V enters a region of constant magnetic field. If the electron follows a circular path with a radius of 28cm, what is the magnitude of magnetic field.
An ideal spring with a stiffness of 379N/m is attached to a wall, and its other end is attached to a block that has a mass of 16-kg. The spring/block system is then stretched away from the spring's relaxed position until 59J of mechanical potentia..
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