What is the energy in electron-volts (eV) of a photon of green light that has a wavelength of 520 nm? (1.0 m = 1.0 * 10^-9m)

3.8 * 10^-19eV

3.4 * 10^-40eV

2.4eV

2.2 * 10^-21eV

An eight-sided object submerged in water would have pressure applied in how many directions?

An object is initially moving at an unknown velocity. It accelerates at a rate of 2.0 m/s2 to a new velocity of 45 m/s in 10s. What was the initial velocity?

Why are inputs and outputs important to the world?

The level of the water in the open aquarium tank goes down each day. why?

Molly is looking for a sustainable fuel source that doesn't require technical equipment to harness. She is concerned that trees take too long to replace through reforestation. What alternative should she consider? A. fossil fuels B. geothermal C.

A 242-g block is pressed against a spring of force constant 1.62 kN/m until the block compresses the spring 10.0 cm. The spring rests at the bottom of a ramp inclined at 60.0° to the horizontal.

Groups of the periodic table correspond to elements with a the same color b the same atomic number c similar chemical properties d similar number of neutrons

If a child ran into the road 65 to 70 feet ahead of your vehicle, what is the highest speed from which you could stop with good brakes before hitting him?

Which of the following describes a response to external stimuli? a rabbit runs away from a fox that is chasing it a woman drinks water when she is thirsty a boy eats food when he is hungry a person yawns when oxygen levels in the blood are low

Why do moon phases repeat about every 28 days