(Electrical Physics) The rate at which electrical energy is used may be measured in:

(a) joule second (b) watt second (c) watt (d) joule
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Two polarizers are oriented at 40∘ to each other and plane-polarized light is incident on them. if only 16 percent of the light gets through both of them, what was the initial polarization direction of the incident light?

Select for each of the following statements whether it is correct or incorrect. (a) in an isothermal expansion of an ideal gas. (b) the temperature remains constant. (b) the pressure remains constant. (c) there is work done by the gas. (d) there is heat added to the gas. (e) the change in internal energy equals zero.

The built in flash in a compact camera is usally capable of giving correct exsposure for distance up to how many meters?