A student used a digital stopwatch three times to time 10 oscillations of a pendulum. The timings were 13.52s12.64sand 13.58 a) Calculate (i) the average time for 10 oscillations, (ii)the time period of the oscillations
b)Estimate the accuracy of the timings, giving a reason for your estimate.

Ais useful when you need a simple machine to you separate two things. a. lever b. screw c. pulley d. wedge

An equinox occurs when a. neither end of earth's axis is tilted toward or away from the sun. b. the north end of earth's axis is tilted away from the sun. c. the north end of earth's axis is tilted toward the sun. d. earth's axis is parallel to the sun's rays. select the best answer from the choices provided a b c d

The pressure increases by 1.0 x 104 n/m^2 for every meter of depth beneath the surface of the ocean. at what depth does the volume of a pyrex (bulk modulus 2.6 x 1010n/m^2) glass cube, 9.8 x 10^−2m on an edge at the ocean's surface, decrease by 7.5 x 10−10m^3? explain the formula beyond this point: p=1.0x10^4, b=2.6x10^10, l=9.8x10^−2, delta v=7.5x10^−10. at some point l needs to be cubed. why p is divided by delta v?