A 14 g bullet is fired with a velocity of 200 m/s from a 7 kg rifle. What is the recoil velocity of the rifle? Note: report your answer to one significant figure.
nts
Vr
m/s
BO

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.

What is a neurotransmitter involved in mood reward, addiction, and motor behaviors?

Estimate the change in the gibbs energy and molar gibbs energy of 1.0dm3 of octane when the pressure acting on it is increased from 1.0 atm to 100 atm. the mass density of octane is 0.703 g cm−3