How does the presence of a catalyst affect the activation energy of a reaction?

The diagram represents two small, charged, identical metal spheres, A and B, that are separated by a distance of 2.0 meters. If the two spheres were touched together and then separated, the charge on sphere A would be * q1 = - 1.6x10^-6C q2=+1.

A ball is thrown into the air with an initial velocity of 15 m/s, how high into the air does the ball travel?

The diagrams show the sound waves produced in one second from various tuning forks. which sound wave has the lowest pitch?

Two masses are separated by 1 m. suppose the masses are moved so they are 2 m apart how will the gravitational force change

Two vectors A and B have components (0,1) and (-1,3), respectively. What is magnitude of the sum of these two vectors? a) 3.2 b) 4.1 c) 3.9 d) 2.8

What are at least three types of energy involving a microwave

1. At one time, people thought that heat was a substance called

How are magnet'so magnetic force and magnetic field different

Ahmed saw all of these things as he walked to school this morning. Which one is an example of a force pushing downward toward the ground? A. A bird sat on a telephone wire. B. A woman moved her child from one place to another in a wagon. C.

What types of mediums are involved in the energy transfer