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Assume that the protons in a hot ball of protons each have akinetic energy equal to kT, where k is the Boltzmann constant and Tis the absolute temperature. If T = 1.5 107 K, what is the least separation any two protons can have?
In a large centrifuge used for training pilots and astronauts, a small chamber is fixed at the end of a rigid arm that rotates in a horizontal circle. What is the angular acceleration in the second training exercise
a 747 jetliner lands and begins to slow to a stop as it moves along the runway. if its mass is 3.41times105 its speed
Jack was exposed to fast neutrons; he received a radiation dose of 300rem on part of his hand, affecting 28.0grams of tissue. How much radiation did Jack receive
A person throws a discus (mass = 2 kg) at an angle of 40o to thehorizontal with a velocity of 20 m/s. Neglect air resistance for these questions. Calculate the distance the object travelled horizontally priorto ground contact if the discus was rel..
a single mass m1 3.6 kg hangs from a spring in a motionless elevator. the spring constant is k 294.0 nm. now three
A horizontal force of magnitude F = 149 N is used to push a box of mass m = 5 kg from rest a distance d = 13 m up a frictionless incline with a slope q = 22°. How much work is done by the force on the box
What is the distance Delta y_max-min between the second maximum of laser 1 and the third minimum of laser 2, on the same side of central maximum.
What is a vertical velocity of the ball
An athlete swings a ball, connected to the end of a chain, in a horizontal circle. find Which rate of rotation gives the greater speed for the ball
The father has a mass of 110 kg, while the daughter's mass is 39 kg. Where should the father position himself now
When resistors 1 and 2 are connected in series, the equivalent resistance is 19.7 ?. When they are connected in parallel, the equivalent resistance is 3.96 ?. What are the larger resistance of these two resistors
The diffusion constant for the alcohol ethanol in water is 1.24 10-9 m2/s. A cylinder has a cross-sectional area of 3.85 cm2 and a length of 1.82 cm. what mass of ethanol diffuses through the cylinder
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