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Cambridge OL
General physics - ch. 1: Measurements
Chapter 1: Measurements 1-June 09 P3
An engineering machine has a piston which is going up and down approximately 75 times
per minute.
Describe carefully how a stopwatch may be used to find accurately the time for one up-and-
down cycle of the piston.
r. Wa

The position of a crate sliding down a ramp is given by x=(0.05t^3) m, y=(1.7t^2) m, z=(6−0.85t^5/2) m, where t is in seconds. (a) determine the magnitude of the crate's velocity when t = 2 s. (b) determine the magnitude of the crate's acceleration when t = 2 s.

The electric field between square plates of a parallel-plate capacitor has magnitude e. the potential across the plates is maintained with constant voltage by a battery as they are pulled apart to twice their original separation, which is small compared to the dimensions of the plates. the magnitude of the electric field between the plates is now equal to a)e b)e/4 c)e/2 d)4e e)2e

In an experiment, how can i change human errors? be specific.