The maximum wavelength of light required to eject an electron from zinc is 270nm. Calculate the threshold frequency of zinc.

What is a disadvantage of using a series circuit? A. If one section of the circuit fails, the whole circuit fails. B. It requires a complicated pattern of wires to create. C. Additional power sources are not able to be added. D.

What do hail and tornadoes have in common?

An airplane flies 120 km at a constant altitude in a direction 30.0° north of east. a wind is blowing that results in a net horizontal force on the plane due to the air of 2.40 kn in a direction 10.0° south of west.

What are the three reasons cells divide?

What statement is not true when two neutrons are added to oxygen-16.?

Which drum would make a sound that fades away faster - one that makes a loud sound or one that makes a more mellow sound Why?

Which of the following is NOT a way to increase the solubility of a solid in water? A. crushing the solid B. shaking the mixture of solid and water C. raising the temperature of the water D. letting the mixture stand still a long time

Which of the following is true about cells? A. Cells have specialized components that perform different, specific functions. B. A cell's components are all identical and perform the same function. C.

How much heat is contained in 100 kg of water at 60.0 °C?

Which of the following statements is the best definition of weather? Weather is the current conditions in the atmosphere. Weather is the usual conditions in the atmosphere. Weather is the average conditions in the atmosphere.