A penguin walks 5,00 m East to catch a fish in 30.0 sec. He catches 2 fish and decides to share with his friend. He walks back to his original position in 28.0 sec. He then decides he is hungry again and needs another fish. He returns to his fishing spot and decides to go really fast (he is really hungry)
and gets there in 12.0 seconds

When considering gravity acceleration and the force of acceleration, what must be true? a. the direction of acceleration must be perpendicular to the direction of the force. b. the direction of the force and the direction of acceleration must be the same as each other. c. the direction of the force and the direction of acceleration must be opposite of each other. d. the mass of the body must be the same as the acceleration of the body.

Find the magnetic field a distance r from the center of a long wire that has radius a and carries a uniform current per unit area j in the positive z direction.

If the chemical properties of a substance remain unchanged and appearance or shape of a substance changes it is called a ?