Physics, 15.06.2021 23:00 kylediedrich1343
a. A spring with k = 11 N/m is stretched 0.25 m. What force does the spring apply? (1 point) b. What is the spring constant of a rubber band that exerts a force of 35 N when it is stretched 0.1 m? (1 point) c. An elastic band has a spring constant of 55 N/m. It will break when the force reaches 2000 N. How far do you need to stretch the band for it to break? (1 point) d. A 2 kg mass hangs motionless from a spring with spring constant 8 N/m. How far will the spring stretch if the mass is motionless? (1 point)
Answers: 3
Physics, 22.06.2019 00:30
Aball tossed vertically upward from the ground next to a building passes the bottom of a window 1.8 s after being tossed and passes the top of the window 0.20 s later. the window is 2.0 m high from top to bottom. what was the ball's initial velocity? the unit vector j^ is directed upward. how far is the bottom of the window from the launch position? how high does the ball rise above the launch position?
Answers: 1
Physics, 22.06.2019 12:50
Arunner is jogging at a steady 3.6 km/hr. when the runner is 2.9 km from the finish line, a bird begins flying from the runner to the finish line at 14.4 km/hr (4 times as fast as the runner). when the bird reaches the finish line, it turns around and flies back to the runner. even though the bird is a dodo, we will assume that it occupies only one point in space, i.e., a zero-length bird. how far does the bird travel? (b) after this first encounter, the bird then turns around and flies from the runner back to the finish line, turns around again and flies back to the runner. the bird repeats the back and forth trips until the runner reaches the finish line. how far does the bird travel from the beginning? (i.e. include the distance traveled to the first encounter)
Answers: 2
Physics, 22.06.2019 15:10
Suppose that f : rn ā rm and that a ā k, where k is a connected subset of rn . suppose further that for each x ā k there exists a Ī“x > 0 such that f(x) = f(y) for all y ā bĪ“x (x). prove that f is constant on k; that is, f(x) = f(a) for all x ā k
Answers: 1
a. A spring with k = 11 N/m is stretched 0.25 m. What force does the spring apply? (1 point) b. What...
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