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An auditorium measures 35.0 m multiplied by 25.0 m multiplied by 9.00 m. The density of air is 1.20 kg/m3.
(a) What is the volume of the room in cubicfeet?
ft3
(b) What is the weight of air in the room in pounds?
lb
A technician wraps wire around a tube of length 40 cm having a diameter of 7.7 cm. If the current in this solenoid increases at the rate of 3 A/s, what is the self-induced emf in the solenoid
In a certain automobile engine with an efficiency of 20.1%, combustion of gasoline in one cylinder releases 520 J of heat. Find the total mechanical power produced by all four cylinders, operating at 55 cycles/s, or 3300 rpm
When a car is traveling at 25 m/s on level ground, the stopping distance is found to be 22m. This distance is measured by pushing hard on the brakes so that the wheels skid on the pavement. The same car is driving at the same speed down an incline th..
A bead of mass m, acted upon by a uniform graviational force,can slide freely on a frictionless circular hoop of radius R. Determine the Langrangian for the bead
A 550-W space heater is designed for operation inGermany, where household electrical outlets supply 230 V (rms)service. What is the power output of the heater when plugged into a120-V (rms) electrical outlet in a house in the United States? Ignore th..
A 9410-kg car is traveling at 29.7 m/s when the driver decides to exit the freeway by going up the ramp. compute the Magnitude of the average drag force exerted on the car?
A 20 times telescope has a 12{rm cm}diameter objective lens. What minimum diameter must the eyepiece lens have to collect all light rays from an on-axis distant source.
At 20.0°C, a mainly silicon resistor has a resistance of 665 ?, and a tungsten resistor has a resistance of 752 ?. At what temperature will their resistances be equal
fred wants to figure out how much extra it cost him to heat his house at 75.00 f so he does an experiment. he picks a
An alien spacecraft is flying overhead at a great distance as you stand in your backyard. You see its searchlight blink on for 0.190. The first officer on the spacecraft measures that the searchlight is on for 12.0.
car a and car b are in a crash. car a has a total mass of 274 kg while car b has a total mass of 272 kg. the
A person undergoing radiation treatment for a cancerous growth receives an absorbed dose of 1.8 Gy. All the radiation is absorbed by the gowth. Determine the rise in temperature
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