Physics, 07.01.2021 14:00 samueltaye
An early major objection to the idea that the earth rotates on its axis was that it would have
to turn so fast that people would be thrown off into space. Show the error in this logic by
calculating:
a. the speed of a 100 kg person standing at the equator. (The radius of the earth is
about 6400 km).
b. the net force necessary to keep the person in this motion.
c. how the normal force acting on the person compares to their weight.
d. From your answers to these questions, explain why people do not fly off into
space. What would happen to the size of the normal force if the earth spun faster?
Answers: 3
Physics, 21.06.2019 20:30
Aforce of 240.0 n causes an object to accelerate at 3.2 m/s2. what is the mass of the object?
Answers: 1
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.
Answers: 2
Physics, 22.06.2019 12:10
Aspring has a natural length of 8 m. if a 12-n force is required to keep it stretched to a length of 10 m, how much work w is required to stretch it from 8 m to 16 m? (round your answer to two decimal places.)
Answers: 1
Physics, 22.06.2019 19:30
The nuclear potential that binds protons and neutrons in the nucleus of an atom is often approximated by a square well. imagine a proton conned in an innite square well of length 105 nm, a typical nuclear diameter. calculate the wavelength and energy associated with the photon that is emitted when the proton undergoes a transition from the rst excited state (n 2) to the ground state (n 1). in what region of the electromagnetic spectrum does this wavelength belong?
Answers: 1
An early major objection to the idea that the earth rotates on its axis was that it would have
to t...
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