How many neutrons does element x have if its atomic number is 54 and its mass number is 151?

The table shows information about four students who are running around a track. Which statement is supported by the information in the chart? Autumn has more kinetic energy than Chiang. Mohammed has less kinetic energy than Autumn.

When a pitcher is throwing a ball, is he applying positive or negative work to the ball? A. Positive. B. Negitive

How did the scientists discover the common structure of cells

Calculate the kinetic energy of a car that travels at a speed of 20 m/s and has a mass of 1200 Kg

Which parts of the body act as levers? a. muscles b. joints c. bones d. veins

a group of elements that stretch bend and conduct heat and electricity

A rectangular block has dimensions 2.9 cm x 3.5 cm x 10.0 cm. the mass of the block is 615.0 g. what is the volume and density of the block? (answer it with correct numbers of significant figures)

Which of the following are products of cellular respiration? Sunlight Oxygen ATP Water Carbon Dioxide

Do magnetic field lines ever start or end anywhere?

What effect do oceans have on the temperature of coastal areas? A. Ocean breezes warm the coastal land constantly. B. Ocean currents always cool a coastline. C. Ocean winds prevent extremes of temperature on coastal lands. D.