Light having a wavelength of 450 nm (4.50 × 10-7 m) moves through space at 3.0 × 108 m/s. What is the frequency of the light? A.1.35 × 102 Hz
B.7.41 × 10-3 Hz
C.1.50 × 10-15 Hz
D.6.67 × 1014 Hz

Anybody wanna ? (picture included? )

Balloon a has charge q, and identical mass balloon b has charge 10q. you hang them from threads near each other. choose all of the statements with which you agree. check all that apply. a. a and b exert the same magnitude forces on each other. b. the force that a exerts on b is 10 times the force that b exerts on a. c. the angle between the thread supporting a and the vertical is < the angle between the thread supporting b and the vertical. d. the force that a exerts on b is 1/10 the force that b exerts on a.

The vapour pressure of benzene is 53.3 kpa at 60.6 °c, but it fell to 51.5 kpa when 19.0 g of a non-volatile organic compound was dissolved in 500 g of benzene. calculate the molar mass of the compound.