How can the difference in the brightness of spectral lines be explained?

Which statements best describe the steps geologists follow to compare rock layers at distant locations? Check all that apply.

3 physical adaptations of a frog

Two spheres are placed so that their centers are 2.6m apart. the force between the two spheres is 2.75*10^-12. what is the mass of each sphere if one sphere is twice the mass of the sphere?

The plum pudding model of the atom states that A) each atom has overall negative charge. B) each atom has dense, positively charged center. C) an atom is a solid, invisible sphere that makes up all matter.

Why does a ice cube metl when held in a person's hand?

Katie runs 6 km in 0.6 hour, then 5 km in 0.5 hour. Katie's average speed is __ per hour.

A derived unit is a combination of fundamental units. Which of the following is an example of a derived unit? a) centimeter (used to measure distance) b) gram (used to measure mass) c) cubic centimeter (used to measure volume)

Technician A says that a heater core leak can be the result of the coolant wearing a hole through the core. Technician B says that a core leak can be caused by chemical action eating a hole through the core. Who is correct?

If the Coast Guard warns of a giant wave of water approaching the shore as a result of a major earthquake, they are warning of a. an aftershock. b. liquefaction. c. a tsunami. d. landslides.

What is the total number of atoms in the following formula? CaBr2 4 3 2 1