How do I count atoms in science

Two 500g blocks of wood are 2.0 m apart on a frictionless table. A 10g bullet is fired at 400m/s? toward the blocks. It passes all the way through the first block, then embeds itself in the second block.

A 9.0-V battery (with nonzero resistance) and switch are connected in series across the primary coil of a transformer. The secondary coil is connected to a light bulb that operates on 120 V.

Can an object have a varying speed if its velocity is constant?

How did early life forms begin to evolve to adapt oxygen

How does the magnetic force on a stationary charged particle compare to the magnetic force on a moving charged particle? A. There is no magnetic force on a moving charged particle. B. There is no magnetic force on a stationary charged particle. C.

Which kingdom consists only of complex multicellular, eukaryotic organisms which must consume or ingest other organisms for nutrition?

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.