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A small sphere with mass 9.00 μg and charge -4.30μC is moving in a circular orbit around a stationary sphere that has charge +7.50μC.
If the speed of the small sphere is v = 5900 m/s , what is the radius of its orbit? Treat the spheres as point charges and ignore gravity.
Jack is a second-grade student. He seems to have no interest in learning, frequently daydreaming in class and frequently disrupting the class by throwing objects at other students. Explain how a bio psychosocial approach may provide both an integrate..
A solenoid is constructed having 350 turns of wire and is 62.0 cm in length. A single hanging wire is positioned vertically at the end of the solenoid, what is the magnitude of the force on the wire
Several teenagers swim toward a rectangular, wooden raft that is 2.10 m wide and 2.50 m long. If the raft is 7.50 cm thick, how many 75.0kg teenage boys can stand on top of the raft without the raft becoming submerged? Suppose the wood density is 650..
A spherical brass shell has an interior volume of 1.21 x 10-3 m3. Within this interior volume is a solid steel ball that has a volume of 0.62 x 10-3 m3. Find the volume of mercury that spills out of hole
A golf ball is hit with an initial velocity of 50 m/s at an angle of 39 degrees above the horizontal. determine the horizontal distance that the golf ball travels
A railroad car of mass M= 2000kg and speed(initial velocity) Vo= 8.50 m/s collides and couples to another car of equal mass and initially at rest, What is the final speed of the two coupled railroad cars
You need to know the height of a tower, but darkness obscures the ceiling. How tall is the tower
A golf ball of mass 0.045 kg is hit off the tee at a speed of 32m/s. Find the average force exerted on the ball by the golf club
In order to view the craters of the Moon, you construct a refracting telescope from a lens with focal length 90.7 cm as its objective and a 11.5-cm focal length lens as its eyepiece
A 0.22kg arrow with a velocity of 15.00 m/s to the west strikes and pierces the center of a 3.00 kg target. What is the final velocity of combined mass? Answer in m/s.
The concrete wall of a building is 0.136 m thick. The temperature inside the building is 22.3 °C, while the temperature outside is 0.0 °C. What is the emissivity of the wall
In an experiment, 210 g of aluminum (with a specific heat of 900 J/kg·K) at 100°C is mixed with 48.0 g of water (4186 J/kg·K) at 20°C, What is the entropy change of the aluminum
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