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Problem: A spherical balloon with a 35.0 cm diameter is filled with helium gas. The average kinetic energy of the helium atoms is 8.00 x 10-21 J. If the pressure inside the balloon is 1.10 atm,
Part A: What is the total mass of the helium?
I need help to find the total mass of the helium.
A log of mass 40 kg is dropped into river at 0°C. If the relative density of the log is 0.8, what will be the volume of the log above the surface
A railroad car containing explosive material is initially traveling south at a speed of 4.5 m/s on level ground. The total mass of the car plus explosives is 2.5 104 kg. what is the final speed of the other piece
A coil has an induced voltage of 120 volt when the rate of flux change is 0.4 Wb/s. How many turns are in the coil
A 75-kg man is riding in a 75-kg cart at 1.0 m/s. He jumps off in such a way as to land on the ground with no horizontal velocity
the electric field midway between two equal but opposite point charges is 856 nc and the distance between the charges
a position vector in the first quadrant has an x component of 4 m and a magnitude of 11 m. what is the value of its y
A red ball is thrown down with an initial speed of 1.5 m/s from a height of 25 meters above the ground. What is the maximum height the blue ball reaches
your friends 0.0185 kg graduation tassel hangs on a string from his rearview mirror. when he accelerates from a
A plane, diving with constant speed at an angle of 49.0° with the vertical, releases a projectile at an altitude of 560 m. The projectile hits the ground 6.00 s after release.
the astronaut whose heart rate on earth is 65 per minute increase his velocity to v=.95c. what is now his heart rate as measured by an earth observer
A 2.50-cm-diameter parallel-plate capacitor with a spacing of 0.900 mm is charged to 500 V. What is the total energy stored in the electric field
Calculate the speed of block at the instant the dielectric leaves the capacitor assuming it starts at rest and that the voltage across capacitor after the dielectric is removed is measured to be 200 V.
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