Miriam accidentally drops her cell phone during a call. It falls for 0.5 s before hitting the ground. What is the speed of the phone at 0.5 s? Assume only gravity is acting on it. A. 5 m's B. 10 m/s C. 20 m/s D. 0.5 m/s​

Acombination reaction is when two or more combine to form one product. a decomposition reaction is when a substance breaks down into two or more simpler substances in a chemical reaction.

True or false graphs must include scales that increase by the same amount

Two resistors r1 and r2 may be connected either in series or parallel across an ideal battery with emf ε. we desire the rate of energy dissipation of the parallel combination to be 8.75 times that of the series combination. if r1 = 105 ω, what are the (a) smaller and (b) larger of the two values of r2 that result in that dissipation rate?