Please help, I keep getting an answer that isn't an option. A student does 6 J of work compressing a spring by 0.04 m. What is the spring constant of the spring?
(A) 150 N/m (B) 300 N/m (C) 3333 N/m (D) 7500 N/m

Which sentences describe disadvantages of burning fossil fuels instead of using hydrogen fuel cells? burning fossil fuels contributes to climate change. burning fossil fuels takes place inside expensive fuel cells. fossil fuels aren't widely available, but pure hydrogen is. fossil fuels are nonrenewable.

Ais not a compound machine. a. bolt b. shovel c. handcart (dolly) d. see-saw (teeter totter)

Which of the following is not a part of the respiratory system? a. pharynx b. trachea c. pancreas d. larynx hurrim timed