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Q. Two small plastic spheres are given positive electrical charges. When they are a distance of 14.6 cm apart, the repulsive force between them has a magnitude of 0.200 N.
What is the charge on each sphere if the two charges are equal?
Q. A 1800 {rm kg} car traveling at a speed of 33 {rm m/s} skids to a halt on wet concrete where f_k = 0.60. How long are the skid marks?
Presume the child remains horizontal during the fall to the floor. Note that a more complicated fall could result in a head velocity greater or less than the speed you calculate.
A 110kg clock initially at rest on a horizontal floor requires a 607N horizontal force to set it in motion. After the clock is in motion, horizontal force of 525 N keeps it moving with a constant velocity.
Find out the longest wavelength electrons that can produce a first-order maximum.
Find out the average speed for the trip
A 48.21 {rm kg} ice skater spins about the vertical axis through her body with her arms horizontally outstretched, making 2.20 turns each second. The distance from one hand to the other is 1.5 {rm m}. Biometric measurements indicate that each hand na..
A person carries a long pole of mass 20 kg and length 3.4 m at the angle of 60 degrees. Find the magnitude of the torque on the pole due to gravity.
Calculate change in kinetic energy
What is the magnitude of the force that maintains circular motion acting on puck.
State your answer in terms of and Use three significant figures in the numerical coefficient.
find the magnitude of the initial acceleration. At what height above the surface of the earth does the balloon have a speed of 7.30 m/s.
An engineer is designing a pacemaker for cardiac patients. For the 20 year old woman, how many times must device have to beat for her to have a normal life expectancy.
How much does the spring stretch. A 1200 {rm kg} car traveling at a speed of 15 {rm m/s} skids to a halt on wet concrete where f_k = 0.20. how long are the skid marks.
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