To produce change in motion, a force must be a (n)

A) balanced force

B) unbalanced force

C) frictional force

D) gravitational force

Ann walked 1.5 miles south to her house in 0.5 hours what is her speed and velocity

One of the dangers of tornados and hurricanes is the rapid drop in air pressure that is associated with such storms. Assume that the air pressure inside of a sealed house is 1.02 atm when a hurricane hits.

2 inches of rain fall in 30 minutes what is the rate

Which therapy is associated with light, but not sound? A: breaking down kidney stones B: acoustically targeting the delivery of a drug C: cauterizing an incision or wound D: ablating tumors

The outer shell electrons in metals are not tightly bound to the nuclei of their atoms they are free to roam throughout the material moving from atom to atom these materials are good

A firefighting crew uses a water cannon that shoots water at 25.0m/s at a fixed angle of 53.0 degrees above the horizontal. The firefighters want to direct the water at a blaze that is 10.0 m above ground level.

Sulfur oxides (SO2) are responsible for A) global warming. B) greenhouse gases. C) producing acid rain. D) destroying the ozone layer.

During a collision between a photon and an electron, there is conservation of

To produce change in motion, a force must be a (n) A) balanced force B) unbalanced force C) frictional force D) gravitational force

What is meant when Earth's systems are said to be "dynamic"? they are all the same type they are slow moving they cannot be measured they are constantly changing