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A 550 -cm flask contains 0.450grams of a gas at a pressure of 140kPa and a temperature of 315 K
a) What is the molecular mass of this gas?
You wish to boil 1.1 kg of water, which has a specific heat capacity of 4186 J/kg-K. The water is initially at room temperature (293 K). Water boils at 373 K. How much energy must be added to the water by heating it in order for it to start boiling
how far from the edge f the dock can theboy move until the plank is just on the verge of tipping? Explain how can the boy test this conclusion without falling in the water?Explain
It shouldn't matter how many calories were consumed or how long the person walked or ran, we are just making a comparison of burning calories while exercising at 5km/h and 15km/h.
A pendulum is made with a 4.0 kg mass suspended at the end of a thin rod. What is the length of the thin rod
ow does this change in amplitude affect the wave's frequency.
A 45 kg girl is standing on a 130 kg plank. The plank, originally at rest, is free to slide on a frozen lake, which is a flat, frictionless surface. The girl begins to walk along the plank at a constant velocity of 1.33 m/s relative to the plank.
A car travels at a speed of 29 m/s around a curve of radius 67 m. What is the net centripetal force required to keep the car from skidding sideway.
The distance between two telephone poles is 48.0 m. while a 0.600 kg bird lands on the telephone wire midway between the poles, the wire sags 0.200 m. Draw a free-body diagram of the bird. (Do this on paper. Your instructor might ask you to turn i..
Illustrate what other types of sensors could you deploy throughout the cafe to help operations? Illustrate what concerns would you have regarding these sensors?
An athlete at the gym holds a 1.2 kg steel ball in his hand. His arm is 64 cm long and has a mass of 4.0 kg. Evaluate the magnitude of the torque about his shoulder if he holds his arm straight, but 30 degrees below horizontal?
Estimate the terminal speed of a wooden sphere (density 0.810 g/cm3) falling through air, if its radius is 8.00 cm and its drag coefficient is 0.500. (The density of air is 1.20 kg/m3.)
A screen is placed 51.0 cm from a single slit that is illuminated with light of wavelength 677 nm. If the distance between the first and third minima in the diffraction pattern is 2.80 mm, what is the width of slit.
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