Problem on average force exerted by the plate on the ball
A 5.00-kg steel ball is dropped onto a copper plate from a height of 10.0 m. If the ball leaves a dent 3.20 mm deep, what is the average force exerted by the plate on the ball during the impact?
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A 500 watt heater is used to heat water in a plastic bucket. Assume that 90% of the heat produced by the heater goes into heating the water. How long does it take for 2 kg of water at 100 degrees C to completetly change to steam at the same temper
A chemist has two large containers of sulfuric acid solution, with different concentrations of acid in each container. What are the concentrations of sulfuric acid in the original containers?
A block of mass 0.80 kg is suspended by a string which is wrapped so that it is at a radius of 0.054 m from the center of a pulley. The moment of inertia of the pulley is 0.0040 kg·m2.
What is the molarity of a solution of NaOH if 38.6 mL of the solution are titrated by 1.00 g of oxalic acid dihydrate?
A solution of 1.00 g of a protein in 20.0 ml of water has an osmotic pressure of 35.2 torr at 298 K. Calculate the molar mass of the protein.
A potential difference of 120 V produces a current of 8.0 A in the heating element of a toaster. What is the resistance of this heating element while the toaster is carrying this current?
What is the vacuum wavelength ? vacuum in the visible range (380 nm to 750 nm) at which destructive interference causes the film to look dark in reflected light?
A person starts walking from home and walks: 4 miles East. Find the total displacement vector for this walk. If this person walked straight home, they'd have to walk.
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