Aprotostar forms when a collapses under the force of gravity.
a. white dwarf
b. black dwarf
c. nebula
d. supernova

Aperson touches a large chunk of ice with their hand and remarks, “this is making me cold.” explain what this person is feeling. is the ice transferring “cold” to the person? is there a heat transfer occurring? explain.

Ablock of mass m slides on a horizontal frictionless table with an initial speed v0 . it then compresses a spring of force constant k and is brought to rest. the acceleration of gravity is 9.8 m/s2 . how much is the spring compressed x from its natural length?

Suppose you hit your hand against the edge of table. using newton’s third law of motion why does my hand hurt? explain