Which is an example of Earth's conditions slowly changing?

a.

meteors striking

c.

continents moving

b.

volcanoes erupting

d.

a mass extinction

A solid disk of mass m1 = 9.3 kg and radius R = 0.22 m is rotating with a constant angular velocity of ω = 31 rad/s. A thin rectangular rod with mass m2 = 3.9 kg and length L = 2R = 0.

What is necessary for a metallic bonds to form

Suppose you buy some inflated party balloons that are at room temperature (about 20°C). What will happen to those balloons if you take them outside on a cold day? Explain.

Two ice skaters suddenly push off against one another starting from a stationary position. The 45-kg skater acquires a speed of 0.375 m/s relative to the ice. What speed does the 60-kg skater acquire relative to the ice?

When expressing the unit for work, which of the following is the correct choice?

Can the human ear hear radio waves? Give evidence

When four atomic orbitals are mixed to form hybrid orbitals, how many hybrid orbitals are formed?

What goes through evaporation

Explain why chlorine forms a - 1 ion, but sulfur froms a - 2 ion

After exercise your heart rate is