1.concave lens A. distance between two waves
B. can be captured on screen
C. light of a wavelength
D. scattered incident light
E. convex lenses
F. distance to the focal point
G. light swinging in one direction
H. heat radiation

What is work? how much work is done to move an object 0 meters?

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.

Does anyone know how to solve this problem? i really need . i made an attempt but i just cant get it. a metal rod is 25.000 cm long at 25.0 degrees celsius. when heated to 102.0 degrees celsius, it is 25.054 cm long. what is the coefficient of linear expansion for this metal.