Physics, 03.09.2021 01:00 adricabrera
1. The Train Itself
It is late on an exhausting school night. You wake up to find yourself sitting in the car of a sleek and modern express subway train. The train signs indicate that it is a south-bound train. Its intended destination is downtown: 14th Street. You are no longer at John Jay College's uptown address; you are somewhere between 59th Street and 14th Street.
Inside the train, everything looks symmetric (the same, in a certain way). That is, seats face north, south, east and west; windows are arranged identically on all walls; neither the floor nor the ceiling is marked by any distinguishing features. You neither feel nor hear anything: no bumps, no lurches, no turns. None of your senses experience anything to indicate instability nor change. You do recognize that the train design seems quite technologically up-to-date.
The question is: Are you moving?
Some time later, you look through an arbitrary window and see a slew of tiny white lights rushing by. All the lights appear to move as one group. That is, they all appear to move at one speed and in one direction. You are just looking out the window for the first time, so you do know when, if ever, the lights had begun to behave in this manner.
2A) Draw a neat and clear sketch of what you see through the window.
2B) At this moment, are you moving?
a. Yes.
b. No.
c. Both yes and no.
d. Neither yes nor no.
e. Not enough information to choose any of the above.
Answers: 2
Physics, 22.06.2019 01:20, Kjcampbell2
Your target variable is δf, the magnitude of the difference in frequency between the waves emitted from the sonar device and the waves received by the device after reflecting off the whale. write an expression for δf in terms of the relevant frequencies using the subscript notation introduced above.
Answers: 3
Physics, 22.06.2019 05:30, trevorhenyan51
Suppose you have three polarizing filters, with the second at an angle of 42∘ to the first and the third at an angle of 90∘ to the first. by what perfect will the original intensity of unpolarized light be reduced to after passing through all three filters?
Answers: 2
Physics, 22.06.2019 06:00, quetzaliescalona
A1,700kg car is being used to give a 1,400kg car a push start by exerting a force of 140n the impulse on the smaller car during the 30.0s of contact is +670kg*m/s. what is the impulse of the smaller car on the larger car? -814 kg*m/s 0kg *m/s -670kg*m/s -550kg*m/s
Answers: 1
1. The Train Itself
It is late on an exhausting school night. You wake up to find yourself sitting...
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