Which of the following is not a constant or control for this experiment?

a. type of plant

b. the amount of soil

c. the amount of water

d. the amount of time in sun

Lithium atoms split when they are blank with a stream of protons

Which statement best describes an antacid? a) An antacid increases the amount of hydrogen ions b) An antacid neutralizes excess hydrogen ions. c) An antacid decreases the level of hydrogen ions.

A physician is using Doppler ultrasound to measure the motion of a patient's heart. The device measures the beat frequency between the emitted and the reflected waves. Increasing the frequency of the ultrasound will A. Increase the beat frequency. B.

What is the first step of the hydrogen fusion process?

Ndicate whether the statement is true or false. Whenever we move, we alter the rate at which we move into the future. A. True B. False

How are electric circuits and systems for carrying water in building similar

A girl scout is pulling her 30 kg wagon of cookies with a force of 60 N to right. Friction pulls back with a force of 15 N left. What is net force on the wagon

10. A bullet is moving at a speed of 367 m/s when it embeds into a lump of moist clay. The bullet penetrates a foe and comes to a stop at a distance of 0.0621m. Determine the acceleration of the bullet while moving into the clay.

What are the units for mass and volume

A car traveling with constant speed travels 150km in 7200s. What is the speed of the car