Two narrow parallel slits separated by a distance 0.9 mm are illuminated by monochromatic light of wavelength 550 nm. The two slits create a diffraction pattern of bright and dark spots. Find the angle between the center bright spot and the first bright spot next to the center spot in degrees.

Science and technology are interdependent. advances in one lead to advances in the other. give an example of this phenomenon.

(2) (a) you have a simple circuit that consists of only a battery (δvbat=1.5v) and two resistors with resistance r1=10ω and r2=5ω, connected in series with each other. what is the current running through the battery? (b) you re-arrange your circuit so now r2 is attached in parallel to r1 rather than in series. what is the current running through the battery? (c) you add an additional resistor r3=7ω on the same branch as r2. what is the current running through the battery? (d) what is the power dissipated in r3?

What is the coefficient of kinetic friction μk between the block and the tabletop?