Explain why it is sometimes necessary for scientists to replace a scientific model?

A neutral atom as the same number of protons and electrons.

A spherical inflated balloon is submerged in a pool of water. if it is further inflated so that its radius doubles, how is the buoyant force affected?

If the length of the ramp is 2m and the height of the ramp is 1m, what is the mechanical advantage?

What is a possible result of higher air temperature caused by global warming

160-lbm astronaut took his bathroom scale (a spring scale) and a beam scale (compares masses) to the moon where the local gravity is g = 5.48 ft/s2. Determine how much he will weigh on the beam scale.

In some circumstances, science will answer questions about what is good and what is evil. True False

One reason that life as we know it is unlikely to exist on Venus is because A. the surface temperature is too high. B. the surface temperature is too low. C. the surface has too much ice covering it. D. there is no atmosphere.

The attraction between the Sun's gravity and Earth's gravity holds Earth in is?

Explain how a scientist could change a substance's pH from A. An acid to a neutral. B. A base to a neutral C. Create a salt

What could be put into the center section of this Venn diagram?