Physics, 21.07.2019 14:30 Demondevilg
The coefficient of linear expansion of iron is 1.0 × 10−5 per c◦ . the surface area of an iron cube, with an edge length of 5.0 cm, will increase by what amount if it is heated from 10◦ c to 60◦ c?
Answers: 1
Physics, 21.06.2019 17:40
Which is not a source of noise pollution? a)airplanes b)acid rain c)machines d)cars
Answers: 2
Physics, 21.06.2019 19:20
Aferris wheel is a vertical, circular amusement ride with radius 9 m. riders sit on seats that swivel to remain horizontal. the ferris wheel rotates at a constant rate, going around once in 9 s. consider a rider whose mass is 56 kg. at the bottom of the ride, what is the perpendicular component of the rate of change of the rider's momentum? at the bottom of the ride, what is the vector force exerted by the seat on the rider?
Answers: 1
Physics, 22.06.2019 01:20
An engineer designs a roller coaster so that a car travels horizontally for 152 ft, then climbs 137 ft at an angle of 34.0° above the horizontal. it then moves 137 ft at an angle of 48.0° below the horizontal. if we take the initial horizontal motion of the car to be along the +x-axis, what is the car's displacement? (give the magnitude of your answer, in ft, to at least four significant figures and give the direction of your answer in degrees counterclockwise from the +x-axis.)
Answers: 1
Physics, 22.06.2019 01:30
Kate is working on a project in her tech education class. she plans to assemble a fan motor. which form of energy does the motor convert most of its electric energy into? a. light energy b. motion energy c. sound energy d. thermal energy
Answers: 1
The coefficient of linear expansion of iron is 1.0 × 10−5 per c◦ . the surface area of an iron cube,...
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