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Question: An astronaut weighs 275 lbs with equipment here on the surface of the earth. If he goes to a planet where the acceleration of gravity is 12.5 ft/s/s what will he weigh there? What will be his mass be there?
A certain amount of oxygen gas occupies a volume of 12 liters when its temperature is 20C and its pressure is 1 atm. Calculate the number of grams of oxygen
There is evidence that elephants communicate via infrasound,generating rumbling vocalizations as low as 14 hz that can travelup to 10 km. The intensity level of these sounds can reach98 dB, measured a distance of 4.5 m from the source.
A cube of metal has a mass of .347 kg and measures 3.21 cm on each side. Determine the density of the cube in kg/m^3
Runner A is initially 4.0mi west of a flagpole and is running with a constant velocity of 2.0 mi/h due east. How far are the runners from the pole when they meet
If you were to build a pipe organ with open-tube pipes spanning the range of human hearing (20 Hz to 20 kHz), what would be the range of the lengths of pipes required
A served tennis ball is typically in contact with the racquet for 30 ms and starts from rest. In the fastest serve recorded, How far did the ball travel during the serve
A 75-Kg athlete does a single-hand handstand. If the area of thehand in contact with the floor is 125 cm2, what pressureis exerted on the floor?
An experiment is performed in deep space with two uniform spheres, one with mass 30.0 kg and the other with mass 106.0 kg. Find the magnitude of the relative velocity with which one sphere is approaching to the other
An ac power generator produces 24 A rms at 4909 V. The voltage is stepped up to 86000 V by an ideal transformer, What percentage of the power delivered by the generator is dissipated as heat in the power line
A flywheel for energy storage in a hybrid gasoline-electric car is a ring-shaped rotor of mass 49 kg, designed to rotate at 30000 rpm. how long will it take for its stored energy to be exhausted
Water is ejected from a garden hose of radius 1.07 cm at a speed of 4.57 m/s. Find the flow rate through the hose
An engineer wishes to determine the specific heat of a new metal alloy. A 0.150-kg sample of the alloy is heated to 540°C. Calculate the specific heat of the alloy
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