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A particular point on a wire has a constant 250 mA 250mA of current flowing through it. How much charge has passed through that point in the wire in 4 seconds? Select all possible correct answers.
a jogger runs 100 m due west then changes direction for the second leg of the run. at the end of the run she is 175 m
An electron is in the sixth excited orbit of hydrogen, corresponding to n = 7. Find the wavelength of the electron in this orbit
Consider a parallel plate capacitor with an area of 2 cm^2 and a plate separation of 0.02 mm which is charged to a voltage of 2 kV. The work function for the electrons in the plate is 3.8 eV. Compare the electron tunneling current when there is a vac..
The figure below shows three charges at the corners of a rectangle of length x = 0.35 m and height y = 0.22 m. How much work must be done to move the three charges infinitely far from one another?
A 5.5 g dart is fired into a block of wood with a mass of 22.6 g.The wood block is initially at rest on a 1.5 m tall post. After thecollision, the wood block and dart land 2.5 m. from the base of thepost. Find the initial speed of the dart.
Compute the terminal velocity for a particle of radius 1 cm and density of 1 g cm-3 falling through a fluid with a viscosity of 16.1 cP (centipoise).
An electron is accelerated through 15 kV and is then allowed to circulate at right angels to a uniform magnetic field with B = 25 mT. What is its path raduis
A rowboat with a mass of 94 kg carries a 61 kg rower and 34 kg of water that has accumulated in the bottom. What is the subsequent speed of the boat
A parallel beam of light from a He-Ne laser, with a wavelength 633 nm, falls on two very narrow slits 0.050mm apart. How far apart are the fringes in the center of the pattern
a 25-N block slides down a plane inclined at 21.2 degrees to the horizontal with constant velocity. find the total force resisting the motion of the block
If a Carnot engine operating with a hot reservior temperature of 596.8 oC has the same efficiency, what is the cold reservior temperature in degrees Celsius?
A ball of mass 0.640 kg moving east (+x direction) with a speed of 3.50 m/s collides head-on with a 0.84 kg ball at rest. If the collision is perfectly elastic, what will be the speed and direction of each ball after the collision?
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