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Q. A singly ionized helium atom has only one electron bound to the nucleus. What is the radius of the ion while it is in the second excited state?
Q. A meter stick is pivoted at the 0.50 m line. A 3kg object is hung from the 0.15-m line. Where should a 5kg object be hung to achieve equilibrium (the meter stick oriented horizontal and motionless)?
Determine the greatest vertical displacement of the pendulum
If the tension in each chain at the lowest point is 408 N, find the child's speed at the lowest point.
0.75 kg block of ice is sliding by you on a very slippery floor at 2.5 m/s. As it goes by, you give it a kick perpendicular to its path. Your foot is in contact with the ice block for 0.003 seconds. The block eventually slides at an angle of 22 de..
What is the maximum displacement of the bridge deck?
A scuba diver is 48 m below the surface of a lake, where the temperature is 5°C. He releases an air bubble with a volume of 17cm3. The bubble rises to the surface.
A car travelling east at 41.2 m/s passes a trooper hiding at the roadside. The driver uniformly reduces his speed to 25 m/s in 3.90 s.
A drinking straw 20 cm long and 3 mm in diameter stands vertically in a cup of juice 8.0cm in diameter. A section of straw 6.5cm long extends above the juice. A child sucks on the straw, and the level of juice in the glass begins dropping at 0.23c..
A 12.0 kg bucket of water of is suspended by a rope wrapped around a windlass, which is the solid cylinder 0.500 m in diameter with mass 14.0 kg. The cylinder is pivoted on a frictionless axle through its center. The bucket is released from rest at t..
What is the little distance between the speakers for which the interference of the sound waves is destructive.
The spring constant for the tendon is the same for both groups, 32 {rm {N}/{mm}} . What is the difference in maximum stored energy between sprinters and nonathletes.
A copper block is removed from a 300^0 C oven and dropped into 1 L of water at 20.0^0 C. The water quickly reaches 25.5^0 C and after that remains at that temperature. What is the mass of copper block.
Question on center of gravity Discover speed of each block
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