Physics, 18.08.2021 21:00 youugly0123
(1 point) The temperature u in a star of conductivity 3 is inversely proportional to the distance from the center: u=3x2+y2+z2√. If the star is a sphere of radius 2, find the rate of heat flow outward across the surface of the star.
Answers: 2
Physics, 20.06.2019 18:04
Plzz worth 22 ! which statement about energy transformations is not true? a all forms of energy can be transformed into thermal b energy is never destroyed or created during transformations c potential chemical energy always transforms into kinetic d some thermal energy is always released during a transformation
Answers: 1
Physics, 21.06.2019 13:20
Newton's law of universal gravitation states that the force f between two masses, m1 and m2, is given below, where g is a constant and d is the distance between the masses. find an equation that gives an instantaneous rate of change of f with respect to d. (assume m1 and m2 represent moving points.)
Answers: 3
Physics, 21.06.2019 17:20
When an object moves in uniform circular motion, the direction of its acceleration is a) in the same direction as its velocity vector. b) in the opposite direction of its velocity vector c) is directed toward the center of its circular path. d) is directed away from the center of its circular path. e) depends on the speed of the object.
Answers: 1
Physics, 21.06.2019 19:30
Asample of a gaseous substance changes into liquid. this process is called (blank) and it takes place when heat is (blank) a gaseous system
Answers: 2
(1 point) The temperature u in a star of conductivity 3 is inversely proportional to the distance fr...
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