Isotopes have variable numbers of electrons.

a. True

b. False

In what ways might the loss of vegetation as a result of deforestation affect the atmosphere balance

4 meters and the frequency is 3 hz what's the wave speed

Buhrs atomic model differed from ruthofords because it explained that

Thermal contraction definition

The force supplied by a spring depends on what?

Oil having a density of 924 kg/m 3 floats on water. A rectangular block of wood 3.79 cm high and with a density of 970 kg/m3 floats partly in the oil and partly in the water. The oil completely covers the block.

Where does the energy that is used to ride a bicycle up a hill come from and how is it classified?

Explain how the energy of a rubber ball is transformed as it rolls down a ramp.

Which type of friction acts on an object that is not moving? static friction fluid friction sliding friction rolling friction

A substance maintaining a uniform appearance throughout