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The model airplane in figure below is flying at a speed of 23 m/s on a horizontal circle of radius 17 m. The mass of the plane is 0.96 kg. The person holding the guideline pulls it in until the rad
A closed cylindrical tank has a height of 0.71 m. The tank is initially filled with air at a pressure of 2.0 atm. Water is pumped into the tank until the air pressure reaches 4.0 atm. The temperatur
Rhodium has a face-centered cubic structure and has a density of 12.4g/cm^3. What is its atomic radius in pm?
A 45 caliber handgun fires a 12.0 g at a speed of 330 m/s. Assuming it strikes an 80 kg person and ALL of the momentum, find the speed of the person just after impact.
Write an expression for the final concentration, [Cu2] f, after dilution. Units of concentration are ppm. (b) In a similar manner, write the final concentration of added standard Cu2.
If the heat of combustion for a specific compound is -1460.0 kJ/mol and its molar mass is 48.17 g/mol, how many grams of this compound must you burn to release 567.50 kJ of heat?".
A ball is projected upward at time = 0.0 s, from a point on a roof 30 m above the ground. The ball rises, then falls and strikes the ground. The initial velocity of the ball is Consider all quantiti
The ones that give you a sunburn or fade the colors of clothes have a wavelength of about 3.0 x 10-7 meters. From this data, what can you conclude about the energy of a photon with respect to its wa
When the block is pulled out to x = +4.0 cm, we must apply a force of magnitude 370 N to hold it there. We pull the block to x = 14.0 cm and then release it. How much work does the spring do on the
The combustion of octane produces carbon dioxide and water. If you start with 10.0 mol of octane, what mass of water (in grams) would you expect to produce?
You're carrying a 4.0-m-long, 24 pole to a construction site when you decide to stop for a rest. You place one end of the pole on a fence post and hold the other end of the pole 35 from its tip. How
A wave is described by y = (2.00 cm) sin(kx - t), where k = 2.11 rad/m, = 3.62 rad/s, x is in meters, and t is in seconds. Determine the amplitude, wavelength, frequency, and speed of the wave.
A gas bubble forms inside a vat containing a hot liquid. If the bubble is originally at 68C and a pressure of 1.6 atm with a volume of 5.8 mL, what will its volume be if the pressure drops to 1.2 at
A swimming pool has dimensions 30.0 m multiplied by 10.0 m and a flat bottom. When the pool is filled to a depth of 2.30 m with fresh water, what is the force caused by the water on the bottom?
how much KNO3 remains in solution? how much KNO3 crystallizes out? how much CuSO4*5H2O crystallizes out? what percent of KNO3 in the sample is recovered.
A swimming pool has dimensions 34.0 m multiplied by 12.0 m and a flat bottom. When the pool is filled to a depth of 2.30 m with fresh water, what is the force caused by the water on the bottom?
What amount of hydrogen peroxide should result when 1.51 g of calcium peroxide is treated with 23.4 mL of hydrochloric acid solution containing 0.0458 g of HCl per mL?
What could be the possible sources of error for this experimental outcome?be specific and give at least two possible reasons.
Determine the frequency of the coil's rotation when the peak emf of the generator is 163 V?
What is the molality of ethanol in a solution prepared by dissolving 5.00 mL of ethanol (C2H5OH, of density 0.800 grams/mL) in 25.0 mL of water (H2O, of density 1.000 grams/mL)?
A metal bar 1.6m long at room temperature,21c the bar is put into an oven and heated to a temperature of 84c.It is then measured and found to be 1.7mm longer. What is the coefficient of linear expa
What is relative amount of electric energy that will need to be used in both cases to cool a can of water (330 ml) from room temperature to +8 oC? Assume ideal operation of both systems.
225 kg sample of tin initially at 97.5 is dropped into .115 kg of water initially at 10.0°C. If the specific heat capacity of tin is 230 J/kg x °C, what is the final equilibrium temperature
As viewed by a bystander, a rider in a "barrel of fun" at a carnival finds herself stuck with her back to the wall. What is the free body diagram?
If 50.00 mL of 1.00 M HC2H3O2 (Ka= 1.8 x 10^-5) is titrated with 1.00 M NaOH. what is the pH of the solution after the following volumes of NaOH have been added.