What is the term for a variable that a scientist adjusts during an experiment?

A. Interesting variable

B. Experimental variable

C. Random variable

D. Dependent variable

What are atoms mostly consisted of in terms of protons, electrons and neutrons?

The electrons sulfur (s) is most likely to form covalent bond with the element

Starting at the same time, an arrow and a ball are shot horizontally with a speeds of 50 m/s and 44 m/s respectively from the top of a building over flat ground. Which best describes what happens? A.

A device that creates a potential difference in an electric circuit is a (n) a. insulator b. voltage source c. conductor d. circuit

Plants make their own carbohydrates, proteins, and fats. Where do they get the energy needed to make these substances? a carbon dioxide b the Sun c plant food d soil and water

A solid round bar with diameter of 2-in has a groove cut to a diameter of 1.8-in, with a groove radius of 0.1-in. the bar is not rotating.

If a pilot pulls her 12.0 kg rollaboard suitcase along the ground with a force of 25. N for 10 M. The handle she pulls on makes an angle of 36.5 degrees with the horizontal. How much work does she do over the ten meter distance?

What happens to the density when water is poured into a empty glass?

A British newspaper was interested in whether groups of people who differed in social standing were treated differently when they complained to organizations about poor service they had received.

During combustion, a fuel's electromagnetic energy is converted into thermal energy.