3.) How can we calculate the speed of an object?

In what ways are earth and a bar magnet alike?

One student did an experiment to find if fertilizer can make plants grow taller. The steps of the experiment are listed below. Take three pots of different sizes. Fill the pots completely with the same type of soil.

What is the observed frequency of a siren with a frequency of 440 Hz moving towards you at 50 m/s? The speed of sound is 330 m/s.

Which of the following statements are true? A. Energy as heat flows from a lower temperature to a higher temperature B. Energy as heat flows from a higher temperature to a lower temperature C. The amount of het in a closed system is constant D.

Uncharged Particle A. Neutrons B. Protons C. Electrons D. Molecule

Why does heat energy always move from a higher temperature to a lower temperature?

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?