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A 15-cm-diameter cylinder of heliumgas is 20 cm long and at 20°C. Thepressure gauge reads 120 psi.
(a) How many helium atoms are in thecylinder?
(b) What is the mass of the helium?
kg
Andrew jumped on a rocket, sending it straight up, and timing its motion. He sees that the rocket goes by the top of the library after .40 seconds, How fast was the rocket going at lauch
For a research project, a student needs a solenoid thatproduces an interior magnetic field of 0.0300 T. Determine the number of layers of wire needed and the total length of the wire
A ball is thrown upward from the edge of a building that is 100mt all. On its way back down, the ball just misses the building, falling to the ground below. The elapsed time between the throw andthe ball hitting the ground is 6.5 sec.
An alpha particle (q = +3.20×10?19 C) moves at a velocity of 2.45×104 m/s in the positive x direction through a magnetic field of 0.0735 T that points in the negative z direction
A beam of protons, each with kinetic energy 40 MeV, approaches a step potential of 30 MeV. What fraction of the beam is reflected and what fraction transmitted
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A 4.0 Hz wave with an amplitude of 12 cm and a wavelength of 30.0cm travels along a stretched string. How far does a knot on the string travel in the same time interval
A 6.0 kg particle starts from rest at x = 0 and moves under the influence of a single force Fx = 6 + 4x - 3x^2, Find the power delivered to the particle when it is at x = 1.5 m
Space invaders land on earth. On the invaders' temperature scale, the ice point is at 25°I (I = invader), and the steam point is at 153°I.
What is the formula for finding "What is the linear speed inmeters per minute ?" with this information provided:
Two dogs pull horizontally on ropes attached to a post; the angle between the ropes is 60.0?. Dog A exerts a force of 272N , and dog B exerts a force of 346N. Find the magnitude of the resultant force
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