Which two main characteristics describe weather?

A.

gravity

B.

temperature

C.

air pressure

D.

clouds

What change of state occurs when wet clothing on a washing line dries out?

A pulley system is used to lift a 100kg box using a 100N force what is the mechanical advantage

What is the maximum kinetic energy k0 of the photoelectrons when light of wavelength 350 nm falls on the same surface?

What is the measurement of 29.46 cm, when rounded to three significant figures?

For how long ISS is in the space?

Calculate the temperature of and power-per-area radiated from a blackbody if the spectral intensity density peaks at (a) gamma rays, λ = 1.50*10-14 m; (b) x rays, 1.50 nm; (c) red light, 640 nm; (d) broadcast television waves, 1.

How has increased energy use associated with scientific advancements affected society? a. It has led to an increase of the concentration of atmospheric carbon dioxide. b. It has led to an increase in hazardous wastes from mining operations. c.

Water is moving with a speed of 5.7 m/s through a pipe with a cross-sectional area of 4.8 cm2. The water gradually descends 9.2 m as the pipe increases to 8.8 cm2. (a) What is the speed at the lower level? (b) If the pressure at the upper level is 1.

Is Kepler's constant the same for moons orbiting a planet as it is for planets orbiting the sun? Why?

In which one of the following situations is zero net work done? A) A ball rolls down an inclined plane. B) A physics student stretches a spring. C) A projectile falls toward the surface of Earth.