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A gymnast is performing a floor routine. In a tumbling run she spins through the air, increasing her angular velocity from 2.70 to 4.60 rev/s while rotating through one half of a revolution. How muc
Calculate the concentration of vanillin in the imitation vanilla extract in mg/ml and find the total mass of vanillin (ing)in one bottle, (one bottle - 8 fluid oz.) Assume the density = 1.00 g/ml
A jar of salsa sits on a wheel that is turning at 22 rpm (revolutions per minute). If the jar sits 42 cm from the center of the wheel, what is the acceleration of the jar?
What is the average angular velocity of one of the mandibles of the trap-jaw ant when the mandibles snap shut?
Find the distance traveled (in meters) by the jet as the observer watches the nose of the jet cross from one side of the moon to the other.
The smooth frictionless inclined surface makes an angle of ? = 31° with the horizontal, and the block on the incline has a mass of 5.7 kg. The mass of the hanging block is 2.37 kg. Find the magn
A large storage tank, open to the atmosphere at the top and filler with water, develops a small hole in its side at a point 16m below the water level. if the rate of the flow of water from the leak
How do you calculate the percent yield of a product from H-NMR peaks? Not using any other method, they are not available. The only information we have now is the H-NMR's we ranof our products.
A negative charge of -3 x10^-6C and a positive charge of 4.0 x10^-6 C are separated by a distance of 3 mm. What is the force on the negative charge? (magnitude and direction). A. what is the force o
The battery is removed. The fully charged capacitors are connected to each other such that terminals of opposite sign are joined together. Afterwards what is the equilibrium voltage across one of th
The solubility of compound X in water is208 g X/100g of water at 15 C. A solution of X in water at 35 C is made by dissolving 324g in 100g of water. When the water is slowly cooled to 15 C, no perci
A geothermal power plant uses geothermal water extracted at 150°C at a rate of 210 kg/s as the heat source and produces 8000 kW of net power. The geothermal water leaves the plant at 90°C. I
A positive and negative charge, each with 3x10^-6C charge are separated by a distance of 4mm. Find the size of the force acting on each charge. a. what would be the size of the force if the distance
A particle of ink in an ink-jet printer carries a charge of -8X10^-13 C and is deflected onto paper with a force of 3.2X10^-4 N. Find the strength of the electric field.
If your 10 ml water sample requires 15.1 ml of 0.00282M silver nitrate to reach the orange endpont, what is the ppm of chloride in your sample? given for this particular batch of 0.008282M sil
Consider three identical resistors, each of resistance R. The maximum power each can dissipate is P. Two of the resistors are connected in series, and a third is connected in parallel with these two
A 600-MW steam power plant, which is cooled by a nearby river, has a thermal efficiency of 40 percent. Determine the rate of heat transfer to the river water. Will the actual heat transfer rate be h
A sample of an ionic compound NaA, where A- is the anion of aweak acid, was dissolved in enough water to make 100.0 mL of solution and was then titrated with0.100 M HCl.
Two resistors of 5.0 and 9.0Ω are connected in parallel. A 4.0Ω resistor is then connected in series with the parallel combination. A 6.0 V battery is then connected to the series-parall
A 6,000-lb vehicle is 20ft. from one end of a 60-ft bridge. A 3,000-lb vehicle is 40ft from the same end of the bridge. How much weight must each end of the bridge support.
What is the boiling point of the water in your radiator if 2.00 kg of antifreeze (ethylene, glycol C2H6O2) is added to 9.0*10^3 grams of water?
We place a pot of 200 grams of water over a flame. the waterin the pot increases in temperature from 20 degrees celcius to 25degrees celcius. how much heat in joules is absorbed? how much heat in jo
A piece of material weighs 2.50 grams in air, 1.50 grams in water, and 0.70 grams in sulphuric acid. What is the density of the acid? Assume the density of water is 1000 kg/m3.
A 60 kg rectangular box, open at the top, has a base dimensions 1.0 m by 0.80 m and depth 0.50 m. a) How deep will it sink in fresh water? Assume the density of water is 1000 kg/m3.