Which of the following is the best definition of an isotope?

A. elements of the same kind with different numbers of neutrons

B. elements of the same kind that have lost electrons

C.

elements of the same kind that have different electrical charges

What is the difference between speed and velocity? A. Speed and velocity both measure an object's change in position per unit time, but velocity also depends upon the object's direction of motion. B.

Which statement is True? A. A resistor alters current, and a switch turns current on & off B. A resistor measures voltage and a switch changes AC to DC or DC to AC C. A resistor alters current and a switch measures voltage D.

Can you find opals in stagties caves where water been flowing for thousands of years

What sets sound waves?

A cube of mass m1 = 7.7 kg is sitting on top of another cube of the same size and mass m2 = 1.4 kg while they are both in free-fall.

The highest peak in the vicinity (<100 kilometers) of Mt. Kilimanjaro is located to the: a. north. b. west c. east. d. south. e. northeast

Which of the following lists contains only examples of renewable sources of energy? A. wind, tidal, geothermal, and hydroelectric B. coal, solar, wind, and biomass C. fossil fuels and nuclear energy D. hydroelectric, petroleum, solar, and wind

The part of a longitudinal wave that is least dense is called a (n) rarefaction refraction contraction compression

if 100 grams is equal to 1 newton of force, and the water displaced by an object would have a mass of 40 grams, what is its buoyant force on that object?

A charge if 2 nC is placed 10cm to the right of a conducting sphere with a diameter of 2 cm. A charge of 5 nC is placed 10 nC to the left of the same sphere. determine the charge at the center of the sphere.