For a horse race of exactly one mile, is the horse\'s time \"directly\" or \"inv

Question

For a horse race of exactly one mile, is the horse's time "directly" or "inversely" proportional to the average speed? ___ Energy and mass are completely equivalent in the sense that mass be converted (changed) into energy can be converted into mass.(True/False) ______ Measurements time and space are relative, and depend upon the speed of the observer, but the speed of light in vacuum is an absolute, not relative to anything.(True/False) ______ July, a 21 year old red haired girl, leaves Earth on a rocket ship traveling at .999c, leaving her identical twin sister Jane behind on Earth. travels to a distant star she meets handsome alien has a good time. She then returns to Earth and is reunited with Jane. At the reunion one of the twins appears to be a healthy 23 year old red head while twin is an older lady with white hair. Which twin has white hair?_______ A clock and a ruler shoot by you at relativistic speeds. The ruler appears to be too short and the clock seems to be running too slow. (True False) _______ A water wave has a frequency of 5 cycles/sec and a wavelength of 2 meters. What is the wave velocity?_______ A wave which is transmitted from one uniform medium to another will (once it is inside the second medium) undergo: a) reflection, b) reflection, c) diffraction.______ The distance between successive wave crests is called the __________ The units measuring number of cycles per second are called (use the full word) _______ Mass produces gravitational fields. In the same sense, what basic quantity, even when it is not moving or changing, produces an force? (Do not answer "electric field", "electric potential" or "an electromagnetic wave".) _________ Two gamma ray photons collide. A photon has zero electric charge. After the collision the photons have disappeared and two particles have been created. What will be the net electric charge of the particles? a) b) zero, c) negative.______ Give a definition (an equation) for electric potential, V, in of electric potential energy, EPE. ______ A 9 volt battery discharges through a 36 ohm resister. What is the current through the resister? ______________

Explanation / Answer

32)

V= 9v

R= 36ohm

V= iR

I= V/R

= 9/36

=0.25 Amp

23) Vaug= total distance /total time

V praposnal 1/time

Inversonaly praposnal

24) true

E= mc²

31)

Frequency

Unit= Hz

Cycle per second or 1/sec

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