What happens when an electrical gradient and a chemical gradient are applying opposite forces to active transport?               a.  they negate each other.    b.  they triple the strength of each other.    c.  they strengthen each other.    d.  they weaken the power of each gradient by half.

Modern physics a photon emitted from an excited hydrogen atom has an energy of 3.02 electron volts. which electron energy-level transition would produce this photon? a. n=1 to n=6 b. n=2 to n=6 c. n=6 to n=1 d. n=6 to n=2 i chose b but the correct answer is d can someone tell me why? and what's the difference?

An object moves from position +34m to the position -15m in 15 seconds. what is the total displacement? what is the total velocity?

This punnett square shows the cross between two pants. one parent has round seeds (rr). and the other parent has wrinkled seeds (rr) which best describes their offspring as shown in this cross?