PLEASE HURRY, I'M BEING TIMED! The distance from New York to Tokyo is approximately 104 km. When it is 6:00 p. m. in New York, it is 7:00 a. m. of the next day of the week in Tokyo.

Use that information to do an order-of-magnitude estimate of the speed at which the earth's surface moves because of the earth's rotation

-10^10 km/h

-10^8 km/h

-10^5 km/h

-10^3 km/h​

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Pe = 1/2k(x)^2  and .05n/m = .05x10^-9m = x 

The figure is missing but we can answer anyway.the correct answer is "releasing the string". in fact, when the person is holding the bow and the arrow, the kinetic energy of the arrow is still zero (because the arrow is not moving). the moment the arrow is released, it acquires a velocity v, so its kinetic energy will become different from zero: where m is the mass of the arrow and v its velocity.  all the other options, instead, do not increase the kinetic energy of the system: -  pulling farther back on the string : this will just increase the elastic potential energy of the system-  holding the arrow higher: this will increase the gravitational potential energy of the system (which is given by u=mgh, where h is the height above the ground)-  decreasing the mass of the arrow: this will decrease the gravitational potential energy of the system (which is given by u=mgh, where m is the mass)