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Protons can escape from the surface of the sun if their kinetic energy is sufficient to overcome the gravitational potential energy.
a) Calculate the minimum speed necessary for escape
b) the surface temperature of the sun is about 6000 kelvin. Calculate the root-mean-square speed of protons and make graph of speed distribution
At time t=0 a grinding wheel has an angular velocity of 28.0 rad/sec. It has the constant angular acceleration of 35.0 rad/sec^2 until a circuit breaker trips at time t=1.80. From then on, the wheel turns through an angle of 433 as it coasts to the s..
In a test laboratory, an electric engine is used to accelerate a wheel from rest. what is the average power output of the engine
What is tension in each of the cables
Determine the mutual inductance per unit length between two long solenoids, one inside the other, whose radii are r1 and r2 (r2
Two small objects, A and B, are fixed in place and separated by 2.97 cm in a vacuum. Object A has a charge of +2.16 microC, How many electrons must be removed from object A
A narrow beam of light with wavelengths from 450nm to 700nm is incident perpendicular to one face of a 40.00degrees prism made of crown glass, What is the angular spread of the beam after passing through the prism
A spring with a constant k of 30 N/m is stretched a distance of 20 cm (0.20m) from its original unstretched position
A monatomic ideal gas containing 7.95 moles at a temperature of 235 K are expanded isothermally from a volume of 1.23 L to a volume of 4.44 L. Calculate the heat flow into or out of the gas
You find an unlabeled box of fine needles, and want to determine how thick they are. A standard ruler won't do the job, since all you can tell is that each needle is less than a millimeter thick.
A mass-spring system oscillates with an amplitude of 5.50cm. If the spring constant is 247N/m and the mass is 584g, determine the mechanical energy of the system
An ideal gas is expanded isothermally from 20L to 30L. During thismethod , 6J of energy is expended by the external mechanism that expanded the gas. Which of the statements is correct.
Mercury flows through a horizontal pipe 0.80 cm in diameter and 0.5 m long. what is the rate of flow through the tube
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