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A spherical balloon of volume 4.08 103 cm3 contains helium at a pressure of 1.21 105 Pa. How many moles of helium are in the balloon if the average kinetic energy of the helium atoms is 3.60 10-22 J?
______________mol
First, set the mass of the star to 1.0 solar masses and click the "Auto" box. What is the lifetime of a Solar mass star according to this simulation
Determine the theoretical equation for the dependence of Period of the Physical Pendulum to location of the pivot point for a solid bar of length L. This will be T(x) - Period as a function of pivot point position. Mathematically determine minima ..
An electron is initially at rest just outside a large copper surface that has the charge density of 1.20 x10-6 C/m2. How far has the electron moved in 1.07 x10-9 s if the field is uniform over this region.
A 1.5 m^3-volume tank holds oxygen gas (M = 32 g/mole) at the pressure of 500,000 Pa. The temperature is 27 C. Find the mass of oxygen in the tank (in kg)
The skis have a thrust of 200. Sam's speed at the bottom is 43.0. Illustrate what is the coefficient of kinetic friction of his skis on snow?
One possible means of achieving space flight is to place a perfectly reflecting aluminized sheet into Earth 's orbit and to use the light from the Sun to push this solar sail. What force is exerted on the sail
what is the voltage across the capacitors?
You slide a box of books at constant speed up a 30 degree ramp, applying a force of 160 N directed up the slope. What is the mass of the box
A positron (q = +e) moves at 3.2 multiply.gif 107 m/s in a magnetic field of magnitude 0.46 T. What is the angle between the velocity and the field
A projectile is fired into the air from the top of a cliff of height h = 198 m above a valley. Where does the projectile land
Explore the hypothesis of "desertification" by determining the distances required to evaporate a fully formed spherical raindrop (~2 mm diameter) from typical cumulus cover at 2500m. Let h=height(m) above land at sea level.
Two narrow slits are illuminated by a laser with a wavelength of 593 nm. Calculate the distance between the two slits
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