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The drawing shows three point charges fixed in place. The charge at the coordinate origin has a value of q1 = +7.65 µC; the other two charges have identical magnitudes, but opposite signs: q2 = -4.85 µC and q3 = +4.85 µC. (a) Determine the net force (magnitude and direction) exerted on q1 by the other two charges.
A 2.0kg wood block is launched up a wooden ramp that is inclined at a 27? angle. What speed does it have when it slides back down to its starting point
If you weigh 690 N on the earth, what would be your weight on the surface of a neutron star that has the same mass as our sun and a diameter of 25.0 km.
Two children ride on a merry-go-round. One is 2 m from the axis of rotation and the other is 4 m from it. Which child has the larger linear speed and acceleration
A photon has an energy equal to the kinetic energy of an electron with speed, u, which may be close to the speed of light, c. Calculate the ratio of the wavelength of the photon to the wavelength of the electron
A constant electric field directed upon the positive x axis has a strength of 2000 N/. find the force exerted on the proton by the field
A sled and rider with a combined weight of 67 kg are at rest on the top of a hill 26 m high. What is their total energy at the top of the hill
The "reaction time" of the average automobile driver is about 0.7 s. Compute the total distance covered in coming to a stop after a signal is observed from an initial velocity of 15.6 mi/h
In a 100 m race, Maggie and Judy cross finish line in a dead heat, both taking 11.4s. Accelerating uniformly, Maggie took 1.80 s and Judy 2.90s to attain maximum speed, which they maintained for the rest of the race. What was Maggie's acceleration..
An electron moves with velocity v = (3.79E+4i - 5.79E+4j) m/s in a magnetic field B = (-0.905i + 0.559j) T. What is the magnitude of the force on the electron
a catcher catches a 145 baseball traveling horizontally at 38.0 .how large an impulse does the ball give to the
Consider an AC power supply that provides a voltage of 27sin(119t)volts, where t is in seconds. The power supply is hooked up to a 195 resistor. What is the mean current through the resistor
Consider a rotational axis at point where the tire contacts the ground, directed vertical to the plane of the paper. Find out the magnitude of the man's force for both designs.
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