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Calculate the uncertainty in momentum and velocity of an electron in a 1 Å box (1 dimenstional), a hydrogen atom in a 10 Å box, and a 1 g ball bearing in a 10 cm box.
q1. far in space where gravity is negligible a 450 kg rocket travelling at 77 ms fires its engines. the thrust force as
a particle of mass m moves in a parabolic potential energynbspvx frac12 momega02x2agriffiths intro to qm 2nd ed finds
q1. a 35.0- battery with negligible internal resistance a 90.0- resistor and a 1.75 inductor with negligible resistance
A ball of mass 0.30 kg is fired with velocity 160 m/s into the barrel of a spring gun of mass 2.5 kg initially at rest on a frictionless surface. What fraction of the ball's initial kinetic energy is stored in the spring
A system performs 357 J of work on its surroundings while losing 133 J of internal energy. Determine the heat transferred to the system during this process
An occupant of a car has a chance of surviving a crash if the deceleration all through the crash is not more than 30.00 g. Approximation the force on a 72 kg person decelerating at this rate.
Consider a wheel on a racing bicycle. If the wheel has a mass of 0040 kg and an angular speed of 15 rad/s, what is the rotational kinetic energy of the wheel
A research balloon bound for the stratosphere is filled at sea level with 800 m3 of helium whose initial temperature is 285 K. What is the temperature of the helium
a horizontal plywood disk with mass 6.50 and diameter 1.16 pivots on frictionless bearings about a vertical axis
A source of sound moves toward you at speed vs, and away from Jane, who is standing on the other side of it. You hear thesound at twice the frequency as Jane. What is the speed of the source? Assume that the speed of sound is 340 m/s.
A 0.015 kg bullet traveling horizontally at 400.2 m/s strikes a 4.1 kg block of wood sitting at the edge of a table. The bullet is lodged into the wood. If the table height is 1.2 m, how far from the table does the block hit the floor.
a golf club strikes a 0.059 kg golf ball in order to launch it from the tee. For simplicity assume that the average net force applied to the ball acts parallel to the ball's motion, With what speed does the ball leave the club
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