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A 15.0 tank contains 0.209 of helium at 23.0. The molar mass of helium is 4.00 .How many moles of helium are in the tank? What is the pressure in the tank, in pascals? What is the pressure in the tank, in atmospheres?
A bullet is fired with a certain velocity at an angle above the horizontal at a location where g=10.0m/s^2. How long does it take before the bullet hits the ground
An underwater diver sees the sun 58 above horizontal. How high is the sun above horizon to a fisherman in a boat above the diver.
A mixture of ozone and oxygen contaning 20% by volume of ozonediffused through a porous plug in 172seconds, Calculate the molecular weight of ozone
The loaded car of a roller coaster has mass M = 320 kg. It goes over the highest hill with a speed v of 21.4 m/s. What is the force (N) that the track must exert on the car
A hollow sphere is rolling along a horizontal floor at 7.0 m/s when it comes to a 39^circ incline. How far does it go up the incline before coming to a stop and roll back down.
An iron tower in is 304 meters tall on a cold day (T = -9 degrees Celsius). What is its height of the tower on a hot day when the temperature is 34.6degrees Celsius
A resonant circuit in a radio receiver is tuned to a certain station when the inductor has a value of 1.50 µH and the capacitor has a value of 2.20 pF. Find the frequency of the radio station
a "wien" velocity filter uses an electric field and a magnetic field that are at right angles to each other. what is the energy of the proton beam
Four charges are placed at the corners of a square with sides of1.0m each. The charges at the corner of the square are 125C, 225C,425C, and 375C. What is the magnitude of the electric field at the center of the square?
An inclined plane of angle ? has a spring of force constant k fastened securely at the bottom so that the spring is parallel to the surface. A block of mass m is placed on the plane at a distance d from the spring.
A source delivers an AC voltage of the form ?v = 96.2 sin (66?t), obtain the frequency of the source
A single conservative force F(x) acts on a 1.1 kg particle that moves along an x axis. What is the maximum kinetic energy of the particle
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