The two upper chambers of the human heart are known as:

a.

atriums

c.

auricles

b.

ventricles

d.

blood vessels

Calculate the potential difference across a 25-Ohm. resistor if a 0.3-A current is flowing through it. V

Which kind of wave would be observing in outer space between planets where there is little matter

You dip your finger into a pan of water twice each second, producing waves with crests that are separated by 0.15 m. Determine the frequency, period, and speed of these water waves.

What does the chemical formula CaCl show about the compound it represents It is made up of one element. It is made up of two elements. It is made up of three elements. It is made up of four elements

Which of the following events is an example of weather? it is cloudy today in orlando. it rains a lot in miami. it is usually cold in alaska. the sun shines a lot in colorado.

During a medical condition screening lung capacity testing is a standard procedure. True of false

Which of the following is a unit of energy found in food? a). vitamin b) calorie c) nutrient d) water

As one goes from left to right in a period, which of the following is true? A. The number of protons decreases. B. The number of valence electrons increases. C. both A and B D. none of the above

Which of the following surfaces reflects the most light A yellow cloth B. tree trunk C aluminum foil D. Concrete sidewalk

Which part of an atom has a mass approximately equal to 1/2000 of the mass of a common hydrogen atom? A. nucleus B. electron C. proton D. electron cloud