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The uncertainty in the position of an electron along an x axis is given as 56 pm, which is about equal to the radius of a hydrogen atom. What is the least uncertainty in any simultaneous measurement of the momentum component px of this electron?
Birds resting on high-voltage power lines are a common sight. The copper wire on which a bird stands is 2.5 cm in diameter and carries a current of 55 A. If the bird's feet are 3.9 cm apart, calculate the potential difference between its feet. (Th..
A brave child decides to grab on to an already spinning merry-go-round. What is the moment of inertia of the merry-go-round with respect to its central axis
the electric field just above the surface of the charged drum of a photocopying machine has a magnitude e of 3.1 x 105
the frequency of a tuning fork can be found by the methodshown in figure 13-24. a long tube open at both ends is
how fast do you need to hit a block that is resting on a surface with 1n friction force with a 0.5kg hammer in order to
A styrofoam ball of mass 0.120 g is placed in an electric field of 6000 N/C pointing downward. What charge must be placed on the ball for it to be suspended
Two particles are at the same point at the same time, moving in the same direction. Par-ticle A has an initial velocity of 7.7 m/sandnan acceleration of 2.5 m/s2. Particle B has an initial velocityof 3.4 m/s and an acceleration of 5 m/s2.
A 6.0 kg bowling ball traveling 13 m/s collides head-on with a 3.0 kg hunk of putty initially at rest. Assuming a completely inelastic collision (the putty sticks to the bowling ball) what is the speed of the ball just after the collision?
a resting homogenous sphere starts at a vertical height h 45.6m above the floor at the upper end of a wavy track. it
if a bullet with a mass of 0.008 kg is moving with a velocity of 454 ms and it hits a stationary block with a mass of
A 70-kg climber is hanging by a rope off the edge of a cliff, with the top end of the rope tied to a 200-kg rock. However, the rock is sitting on an icy horizontal surface,
An iron heating coil for a burner on an electric range runs off a 240V circuit and produces 100 Watts of heat. Given a length of 1.2 m for the coil, find the diameter of the coil
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