Aforce of 10 n stretches a particular spring by 2 cm. how far would a 20 n force stretch that same spring? a force of 10 n stretches a particular spring by 2 cm. how far would a 20 n force stretch that same spring?
a. 20 cm
b. 4 cm
c. 8 cm
d. 2 cm

If the work required to stretch a spring 3 ft beyond its natural length is 15 ft-lb, how much work is needed to stretch it 27 in. beyond its natural length?

Aflask with vinegar in it has a mass of 160 grams. a balloon with baking soda in it has a mass of 40 grams. the balloon is attached to the flask to seal the opening and the vinegar and baking soda mixes. the balloon inflates to a large volume. what will the total mass of the balloon and flask be after the balloon inflates? explain. a) less than 200 grams because the solid baking soda disappears. b) 200 grams, because all the atoms remain in the balloon or flask. c) more than 200 grams because the size of the balloon is so much larger. d) less than 200 grams because gases such as the one in the balloon are lighter than solids and liquids.

When solid surfaces slide over each other the kind of friction that occurs is called friction