If the tube were filled with helium instead of air, how would your results change

Name three different units of energy used to measure heat and describe what type of situations each is usually used.

The focal length of a relaxed human eye is approximately 1.7 cm. when we focus our eyes on a close up object, we can change the refractive power of the eye by about 16 diopters. (a) does the refractive power of our eyes increase or decrease by 16 diopters when we focus closely? explain. (b) calculate the focal length of the eye when we focus closely.

Determine the maximum r-value of the polar equation r =3+3 cos 0