A ball is thrown upward as shown. Gravity pulls (accelerates) the ball back down. Which of the following statements is true? Velocity and acceleration are both positive.

Velocity is negative and acceleration is positive.

Velocity is positive and acceleration is negative.

Velocity and acceleration are both negative.

What energy is it when you flip on a switch on a lamp

Consider the following reaction at equilibrium: c(s)+h2o(g)⇌co(g)+h2(g) predict whether the reaction will shift left, shift right, or remain unchanged upon each of the following disturbances. a) c is added to the reaction mixture. b) h2ois condensed and removed from the reaction mixture c) co is added to the reaction mixture d) h2 is removed from the reaction mixture.

What is the reduction potential of a hydrogen electrode that is still at standard pressure, but has ph = 5.65 , relative to the she?