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A helium balloon occupies 8.8L at 20 C and 1.0-atm pressure. The balloon rises to an altitude where the air pressure is 0.60atm and the temperature is 10C. What is its volume when it reaches equilibrium at the new altitude? Note: Neglect tension forces in the material of the balloon.
The attached video clip shows footage from Skylab, launched in 1973, used during 1973-74, and in orbit until 1979. Determine the speed that he should maintain, in order to feel as if he were running on earth
A bar of lead (bar A) is in thermal contact with a bar of silver (bar B) of the same length and area, Find the temperature at the junction when the energy flow reaches a steady state
a friend of yours is loudly singing a single note at 400 hz while driving towards you at 25ms on a day when the speed
A square plate is 2.4 × 10^-2 m thick, measures 4.5 × 10^-2 m on a side, and has a mass of 7.2 × 10^-2 kg. determine the maximum possible amount of shear strain
Light waves with two dissimilar wavelengths, 632 nm and 474 nm, pass concurrently through a single slit whose width is 5.88 x10 -5 m and strike a screen 1.90 m from the slit.
A crate with a weight of 50N rests on a horizontal surface. A person pulls horizontally on it with a force of 10N and it does not move. To start it moving, a second person pulls vertically upward on the crate. If the coefficient of static friction is..
When a 19.6 kg wheel with an angular speed of 2.20 rad/s is disconnected from a motor, a 0.238 N · m frictional torque slows the wheel to a stop. how long will it take for the wheel to come to rest
A ball rolls horizontally with a speed of 8.1m/s off the edge of a tall platform.If the ball lands 6.1m from the point on the ground directly below the edge of the platform
A trap door, of length and width 1.45 m, is held open at an angle of 65.0° with respect to the floor. what is the torque exerted on the trap door by the rope
The 1800-turn coil in a dc motor has an area per turn of 1.1 multiply.gif 10-2 m2. compute the current in the coil
An airplane is flying with a velocity of 99.0m/s at an angle of 26.0° above the horizontal. When the plane is a distance 121m directly above a dog that is standing on level ground, a suitcase drops out of the luggage compartment.
What is the maximum height, y2, if the object is thrown with a speed of v2 = 1.99v1 from the surface of Jupiter's moon Io? The acceleration due to gravity on Io is g2 = 1.79 m/s2. Give the reply as a multiple of y1.
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