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A rigid container holds 0.20 of hydrogen gas. How much heat is needed to change the temperature of the gas from 50 K to 100 K? How much heat is needed to change the temperature of the gas from 250 K to 300K ? How much heat is needed to change the temperature of the gas from 2250 K to 2300 K?
A variable-speed drill, initially turning at 400 rpm, speeds up to 1300 rpm in a time interval of 1.0 s. What is its average rotational acceleration
A bodybuilder configures a leg-press apparatus to a resistance of230 lb (about 1000N). She pushes the weight to her full extensionand comes to rest. A). What is her normal force on each of her feet
Calculate each of the following if the electrons exit the field with a speed of 4.45x10^6 m/s and distance between the plates is 2.07 cm.
Assume Rutherford used an alpha particle with a kinetic energy of 5.25MeV and fired them into a sheet of aluminum, one atom thick. Determine the minimum radius of approach
At their closest approach, Venus & Earth are 4.20 x 10^10m apart. The mass of Venus is 4.87 x 10^24 kg, What is the force exerted by Venus on Earth
A tank of volume 0.5 m^3 contains oxygen at a measure of 1.5 x 10^6 Pa and a temperature at 20 degrees C. How many kilomoles of oxygen are in the tank
A round flywheel is going 35 rad/s and the moment of inertia is25 kg-m2. It merges with an oval flywheel with inertiaof 15 kg-m2 and velocity of 12 rad/s in the opposite direction. What is the final angular velocity?
the space shuttle is in a 230 mile high orbit. what are the shuttles orbital period in minutes and its speed
Your 12-kg baby sister pulls on the bottom of the tablecloth with all her weight. On the table, 59cm from each edge, is a 5.8-kg roast turkey. What's the turkey's acceleration
The paths of a golf ball your friend drops from the window of her apartment and of the rock you throw from the ground at the same instant. The rock and the ball collide at x = 39.86 m, y = 16.41 m, and t = 2.68 s.
Suppose a block of mass 5 kg is resting on a horizontal surface and coefficient of static friction between block and surface is 0.2. What is the reaction on the block by the vertical wall
what is the terminal velocity of a 6.00-kg mass object in falling with a drag force with a magnitude that depends on
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