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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 must reach a speed of 186mi/h to take off. If the runway is 488m long, what is the minimum value of acceleration that will allow the airplane to take off successfully.
Two identical +9.5 uC point charges are initially 3.5cm apart from each other. If they are released at the same instant from rest, how fast will each be moving as they are very far away from each other? Assume they have identical masses of 1 mg.
Two doors of the same unknown dimension lay inline and parallel horizontally to one another (Example: As viewed from above in an architectural drawing.
On a cool morning, when the temperature is 16 deg Celsius, you measure the pressure in your car tires to be 20.0 psi. After driving 40 mi on the freeway, temperature of your tires is 56.0 deg Celsius. What pressure will your tire gauge now show.
how long is the eagle in the air?
The system is balanced by a support that is 0.300m from the left end of the plank. How far to the right of the support is the plank's center of gravity.
A 2,700-kg satellite is in a circular orbit around a planet. The satellite travels with a constant speed of 6,270 m/s. The radius of the circular orbit is 8.72 × 10^6 m. What is the acceleration of satellite.
An electron starts from rest 5.00 cm from the center of a uniformly charged sphere of radius 4.00 cm. If the sphere carries a total charge of 1.00 x10-9 C, how fast would the electron be moving when it reaches the surface of the sphere.
A park merry-go-round consists of a 210 kg circular wooden platform 3.90 m in diameter. Four children running alongside push tangentially along the platform's circumference until, starting from rest, the merry-go-round reaches a steady speed of on..
What is the period of this pendulum in the small angle approximation.
How far away is the Milky Way from our nearest neighbour, Andromeda Galaxy, if Andromeda contains roughly the similar number of stars and attracts the Milky Way with a gravitational force of 2.4 x 10^30 N.
estimate the speed of the car just before braking. how much time passes before the brick lands on the ground..
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