Explain why the terms mass and weight should not be used interchangeably

Straw polls are___. A. scientifically based B. representative samples C. biased sampling D. cluster samples

The surplus energy theory of play suggests that A. children are the link between animals and human beings B. children have too much energy and play will rid them of that energy. C. play is necessary to reenergize human cognition. D.

Consider a thermometer at room temperature 20.0 ◦C. We now place it inside a water tank whose temperature is at 30.0 ◦C. After one minute, it shows the temperature at 29.8 ◦C.

A molecule that speed up a reaction

Light waves from the sun can travel through outer space and reach the earth. This suggests that light is a (n) A) mechanical wave. B) compression wave C) Longitudinal wave D) electromagnetic wave

Find the period and frequency of a green photon that had a wavelength of 525 nm

Match these items. 1 . involuntary muscle tissues that have fibers 2 . tendons muscle controlled by will 3 . cardiac muscle muscle not controlled by will 4 . voluntary muscle arm muscle 5 . biceps heart muscle

Assuming that voltage remains constant, what happens to the current in a filament if it is replaced by a thinner wire? A. The current increases. B. The current decreases. C. The current is not affected by a change in filament thickness. D.

What is blochemistry?

Which element in period 3 on the periodic table is a metallioid