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Two 4.0-g spheres are suspended by 9.0-cm-long light strings (see the figure). A uniform electric field is applied in the x-direction. If the spheres have charges of ?6. 10-8 C and +6. 10-8 C, determine the electric field intensity that enables the spheres to be in equilibrium at ? = 12°.
Treating the pulley as a uniform disk, determine the speeds of the two objects as they pass each other.
what happens to light of a particular frequency when it is incident upon the material that natural frequency is the same as the frequency of the light.
You measure the length of a distant car to be subtended by an angular distance of 1.0 degrees. approximately how far away is the car
If the projectile rises to a maximum height of only 10.2 m, identify the magnitude of the average force due to air resistance.
W hat is the velocity of the gasoline in the tube
A bullet is fired through a board 13.5 cm thick, with a line of motion perpendicular to the face of the board. If the bullet enters with a speed of 387 m/s and emerges with a speed of 163 m/s, what is its acceleration as it passes through the boar..
A proton is released from rest at the positive plate of a parallel-plate capacitor, What will be the proton's final speed if the experiment is repeated with double the amount of charge in each capacitor plate
The mass of the Moon is 7.35 × 10^22 kg, whereas that of Earth is 5.98 × 10^24 kg. The average distance from the center of the Moon to the center of Earth is 384,400 km.
A 6.50 g bullet moving at 726 m/s strikes a 590 g wooden block at rest on a frictionless surface. What is the speed of the bullet-block center of mass
A thin 11-cm-long solenoid has a total of 440 turns of wire and carries a current of 1.9A, Calculate the field inside the solenoid near the center
Eight lights are connected in parallel to a 110 V source by two leads of total resistance 2.20. If 240 mA flows through each bulb, what is the resistance of each.
A ball of mass m=0.5 kg and radius r=0.02m is pushed against a spring of force constant 200N/m, What is the speed of the rolling ball when it leaves the spring
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