Physics, 09.10.2019 01:20 mikurrjurdan
One end of a horizontal spring with force constant 130.0 n/m is attached to a vertical wall. a 4.00-kg block sitting on the floor is placed against the spring. the coefficient of kinetic friction between the block and the floor is μk = 0.400. you apply a constant force f, which is directed toward the wall. f has magnitude of 82.0 n and is directed toward the wall. at the instant that the spring is compressed 80.0 cm, what are(a) the speed of the block, and(b) the magnitude and direction of the block's acceleration?
Answers: 1
Physics, 22.06.2019 07:50
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Physics, 22.06.2019 10:00
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Physics, 22.06.2019 11:30
Balloon a has charge q, and identical mass balloon b has charge 10q. you hang them from threads near each other. choose all of the statements with which you agree. check all that apply. a. a and b exert the same magnitude forces on each other. b. the force that a exerts on b is 10 times the force that b exerts on a. c. the angle between the thread supporting a and the vertical is < the angle between the thread supporting b and the vertical. d. the force that a exerts on b is 1/10 the force that b exerts on a.
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Suppose that f : rn → rm and that a ∈ k, where k is a connected subset of rn . suppose further that for each x ∈ k there exists a δx > 0 such that f(x) = f(y) for all y ∈ bδx (x). prove that f is constant on k; that is, f(x) = f(a) for all x ∈ k
Answers: 1
One end of a horizontal spring with force constant 130.0 n/m is attached to a vertical wall. a 4.00-...
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