The separation between adjacent nodes of standing waves for a given wavelength λ is Question options:

A. λ/8

B. λ/4

C. λ/2

D. 2λ

E. 4λ

What is the role of the ocular lens?

At time t=0, a particle is located at the point (3,6,9). it travels in a straight line to the point (5,2,7), has speed 8 at (3,6,9) and constant acceleration 2i−4j−2k. find an equation for the position vector of the particle.

Contrast the force of gravity between these pairs of objects: 1-kg mass and a 2-kg mass that are 1 m apart; a 1-kg mass and a 2-kg mass that are 2 m apart; and two 2=kg masses that are 1 m apart. i dont understand.