✓lam
who am i?
o i can be observed
o lam the appearance of an object
o i can be observed or measured using science tools
✓lam a
elow.

The discovery that the universe appears to be expanding led to a widely accepted theory called a.) the big bang theory b.) the doppler effect c.) hubble’s law d.) solar nebular theory e.) the seyfert theory

When an object is heated it contracts. a. true b. false

You are given two vectors a⃗ =−3.00ι^ 5.00j^ and b⃗ =5.00ι^ 2.00j^. let the counterclockwise angles be positive.