In which of the substances in the figure are the forces of attraction among the particles so weak that they can be ignored under ordinary conditions?

Aboxissittingonadesk. Theboxhasamassof52kg. Whatis the magnitude of the normal force acting on the box by the desk? What is the weight of the box?

What is the main reason that the spectra of all stars are not identical? Explain.

Why heat capacity for polymer higher than metal?

Compare to visible light, the wavelength of x-rays is ___ and the frequency is ___.

Which of the following tends to increase in a system? A. temperature B. Heat C. Entropy D. Energy

A source from which organisms generally take elements is called a/an A. biotic community. B. reservoir. C. exchange pool. D. food web.

Jill has a mixture of sand and iron fillings. The mass of the mixture is 250 g. Jill uses a magnet to seperate the two substances. Then she measures the mass of the sand as 150 g what should be the mass of the iron fillings

Ca (OH) 2 is__ An acid A base A salt

What is "really easy" way to lose weight without losing mass?

Use newton's first law to explain why book on a desk does not move