If 10% of a 85-kg rock climber's total energy expenditure goes into the gravitational energy change when climbing a 120-m vertical slope, what is the climber's average metabolic rate (in watts) during the climb if it takes her 10 min to complete the climb?

In a given chemical reaction, the energy of the products is greater than the energy of the reactants. which statement is true for this reaction?

The star betelgeuse is about 600 light-years away. if it explodes tonight, a. we'll know because debris from the explosion will rain down on us from space.b. we'll know it immediately because it will be brighter than the full moon in the sky.c. we won't know about it until 600 years from now.d. none of the above.

Greg drew a diagram to compare two of the fundamental forces. which labels belong in the areas marked x, y and z? gravitational force electromagnetic force x. attractive y repulsive z: infinite range x: infinite range y attractive z. repulsive x. always attractive y: infinite range z: attractive or repulsive x. attractive or repulsive y infinite range z: always attractive