Physics, 04.03.2020 23:33, Quidlord03
A metal sphere is heated so that t seconds after the heat has been applied, the radius r(t) is given by r(t) = 4 + 0.04t cm. Express the volume of the sphere as a function of t.
Answers: 1
Physics, 21.06.2019 17:10, seby77L
Aspecial electronic sensor is embedded in the seat of a car that takes riders around a circular loop-the-loop ride at an amusement park. the sensor measures the magnitude of the normal force that the seat exerts on a rider. the loop-the-loop ride is in the vertical plane and its radius is 23 m. sitting on the seat before the ride starts, a rider is level and stationary, and the electronic sensor reads 740 n. at the top of the loop, the rider is upside down and moving, and the sensor reads 370 n. what is the speed of the rider at the top of the loop?
Answers: 1
Physics, 22.06.2019 21:00, brittneys55
What is the efficiency of an engine that does 80 j of work and exhausts 320 j of heat while taking in 400 j of heat ? a. 10% b. 20% c. 80% d. 25%
Answers: 1
Physics, 23.06.2019 00:20, dragongacha777
Ahypothetical metal has an orthorhombic unit cell for which the a, b, and c lattice parameters are 0.413 nm, 0.665 nm, and 0.876 nm, respectively. (a) if there are 8 atoms per unit cell and the atomic packing factor is 0.536, determine the atomic radius (in nm). (b) if the density is 3.99 g/cm3, calculate the metal's atomic weight (in g/mol).
Answers: 3
A metal sphere is heated so that t seconds after the heat has been applied, the radius r(t) is given...
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