Which of these can a mirror not do?
a. focus light rays
b. spread light rays
c. refract light rays
d. reflect light rays so they're parallel to each other

Classify each possible hypothesis about a medicinal aloe vera plant as falsifiable or non-falsifiable. aloe vera gel is the best natural skin moisturizer. aloe vera gel can heal wounds by boosting cell renewal. aloe vera juice tastes better than carrot juice. drinking aloe juice can reduce the risk of lung cancer.

Within a pendulum, as potential energy decreases, energy increases. a. heat b. kinetic c. frictional d. gravitational

Asign is hung between two cables as illustrated below. if the sign weighs 350 n, what is the tension (in n) in each cable?