posted by Lisa .
can someone check?
Which has greater volume: 1 kg of gold or 1 kg of water?
a. The gold has greater volume.
b. The water has greater volume.
c. Gold and water have the same volume.
Is it a? I know it's not b.
The stones in an arch are . . .
c. under tension
d. under compression
I pick d.
A metal wire stretches 1.00 mm when 100 lbs of weight are suspended from the end. If instead only 50 lbs of weight were suspended from the wire, how far would it stretch?
a. 0.25 mm.
b. 0.50 mm.
c. 1.00 mm.
d. 2.00 mm.
I need help with this question. Is this b?
you are dead wrong on the first, right on the second, and guess right on the last. The key on the last is Hooke's law:
if you have theforce, you halve the displacement.