According to this equation, F=ma, how much force is needed to accelerate a 70-kg runner at 5m/s2?

A.

350 m/s

B.

14 N

C.

350 N

D.

14 m/s

Which of the following is the best example of sequencing data? A.) Placing cities in groups based on presence of mountains or sea shores. B.) Placing cities in groups based on the types of vegetation that grow in each city. C.

What happens when a penny is dropped from a height of 20 meters? A. it falls at a constant velocity B. its mass doubles for every second it falls C. the force of gravity causes it to accelerate D. it changes direction every 9.8 meters

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

As a tree respires, it takes in carbon dioxide, CO2, and water vapor, H2O, from the air while also releasing oxygen, O2. Does the tree lose or gain weight as it respires? Explain.

Which object has a constant speed? a racecar starting a race a car traveling the speed limit a bicycle coming to a stop a ball falling off a table

Which of the following explains how heat flow within Earth changes its surface? Molten material moves in one direction, moving the plates in the opposite direction Molten material moves in one direction, moving the plates in the same direction

Regarding perspectives on abnormality, what is the common ground between the medical and psychoanalytic perspectives? a. Both view abnormal behaviors as symptoms of underlying problems. b.

The force in Newtons on a particle directed along the x-axis is given by F (x) = exp ( - (x/5) + 5) for x≥0 where x is in meters. The particle is constrained to move along the x-axis.

What are electromagnetic waves? what are its characteristics? how do we classify them?

A gas is collected from a radioactive material; upon inspection, the gas is identified as helium. The presence of the helium indicates the radioactive sample is most likely decaying by: A). alpha B). beta + C). beta - D). gamma