A flying airplane is affected by which force or forces

A.) friction only

B.) gravity only

C.) gravity and friction only

D.) gravity, friction and an applied force

Which of the following is not a characteristic of electromagnetic waves

Give two reasons to explain why a proline residue in the middle of an α-helix is predicted to be destabilizing to the helical structure. Check all tha apply. A.

A lion is a heterotroph, what a type of organism is it

Fresh water that flows into an ocean is an estuary. True or False

What wave can travel through a vacuum

Assume that 4 molecules of nitrogen and 9 molecules of hydrogen are present? after complete reaction, how many molecules of ammonia are proceded?

Which of the following are chemical changes? Check all that apply. A. sugar is dissolved in water B. A warm coke bottle fizzes when opened C. The Copper roof turns green over time D. Baking soda is dissolved in vinegar and bubbles appear E.

Which metal will more easily lose an electron sodium or potassium

What genetic engineering issue is of greatest public concern? A. It may create new varieties of food. B. It may create new medicine. C. It may create new opportunities for research. D. It may create new allergies in humans

Diamonds are more expensive than water because a. markets do not always reflect value. b. they have fewer uses. c. they yield higher marginal utility. d. they yield higher total utility. e. all of the above