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In an ionic solution, 5.8 x 1015 positive ions with charge +2e pass to the right each second while 6.3 x 1015 negative ions with charge -e pass to the left. What are the magnitude and direction of current in the solution?
A solid cylinder of mass 10 kg is pivoted about a frictionless axis thought the center O. How many radians does the cylinder rotate through in the first 5.0 seconds, if it starts from rest
A golfer lines up for her first putt at a hole that is 10.5 m exactly north west of her ball's location. She hits the ball 10.5 m and straight, but at the wrong angle, 41 degrees from due north.
A small grinding wheel has a moment of inertia of 4.0×10?5. What net torque must be applied to the wheel for its angular acceleration to be 150
You clamp a straight ramp of length 51 cm making an angle of 18.0° with the horizontal table top, What time elapses from when the car leaves the ramp until it reaches the floor
Derive from the Uncertainty Principle a formula for the relative spread of the spectral line that corresponds to the longest wavelength of the Lyman series.
Two blocks are pressed together, compressing a spring, the system is then released from rest on a level, frictionless surface. the spring is not attacthed to either block and drops to the surface after it is expanded. i need to demonstrate whether..
find the mass of Earth from the period T and the radius r of the Moon's orbit about the Earth. T=27.3 days and r=3.82E5 km. suppose the Moon orbits the center of Earth rather than the center of mass of the Earth-Moon system.
An 6.60-cm-diameter, 370 g sphere is released from rest at the top of a 2.00-m-long, 19.0 deg incline. find the sphere's angular velocity at the bottom of the incline
three charges are fixed in the x-y plane as follows 1.7nc at the origin 00 2.2nc at 0.65m 0 -1.8nc at 01.60m. find the
mileposts mark distance along a highway. a car traveled from milepost 15 to milepost 185. to calculate the average
A cylindrical copper rod has resistance of 0.3 ohm. It is reformed to 3.8 timesm its original length with no change of volume. What is its new resistance in ohms?
An archer wishes to shoot an arrow at a target at eye level a distance of 56.5 m away. what angle should the arrow make with the horizontal
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