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Four point charges, each of magnitude 12.08 µC, are placed at the corners of a square 84.3 cm on a side. If three of the charges are positive and one is negative, find the magnitude of the force experienced by the negative charge. The value of Coulomb's constant is 8.98755 × 109 N · m2/C2. Answer in units of N
What is the momentum of a 2600 kg satellite orbiting at 5.50 km/s? (anser in kg.m/s) Find the difference between this momentum and the classical momentum. (Hint: Use the approximation that γ = 1 + (1/2)v2/c2 at low velocities.)
the period t of a physical pendulum is measured about a certain pivot point a. the measurement is repeated varying the
An iron brick measuring 200 mm / 20 cm / 0.05 m is submerged in pure water. (mass density 7860 kg/m^3/ weight 490 lb/ft/ specific gravity 7.86), What is the net force on the brick
A small object with a mass of 360 mg carries a charge of 30.0 nC and is suspended by a thread between the vertical plates of a parallel-plate capacitor. The plates are detached by 2.40 cm. If the thread makes an angle of 17.0° with the vertical, what..
A solid disk rotates in the horizontal plane at an angular velocity of 0.038 rad/s with respect to an axis perpendicular to the disk at its center. The moment of inertia of the disk is 0.11 kg ·m2. From above, sand is dropped straight down onto this ..
Sam (85 kg) takes off up a 50-m-high, 10° frictionless slope on his jet-powered skis. The skis have a thrust of 240 N. He keeps his skis tilted at 10° after becoming airborne. How far does Sam land from the base of the cliff.
A football is kicked straight up into the air; it hits the ground 3.4s later. What was the greatest height reached by the ball? With what speed did it leave the kicker's foot
A 300 mH inductor and a 200 ohm light bulb are connected in series during a switch to a 12 volt DC power supply as shown. Sketch a graph of the current vs. time starting when the switch is closed. Show an approximate time value and final current valu..
Find the location of the center of mass of a nonuniform rod0.38 m in length if its density varieslinearly from 0.92 g/cm at one end to5.30 g/cm at the other end. Specify thecenter-of-mass location relative to the less-massive end of therod.
A person walks first at a constant speed of 4.80 m/s along a straight line from point a to point b, What is her average speed over the entire trip
Calculate the surface-charge densities at an arbitrary point on the plane and on the boss, and sketch their behavior as a function of distance (or angle).
A small moon of a giant planet has an orbital period of 1.43 days and an orbital radius of 4.69 multiply.gif 105 km. determine the mass of the planet
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