Which of these describe the composition of earths atmosphere?

A) mixture

B) substance

C) compound

Suppose that during a storm the force of the wind blowing against a skyscraper can be expressed by the vector, where each measure in the ordered triple represents the force in newtons. what is the magnitude of this force?

What are similarities between the Rorschach inkblots and the TAT test?

A man walks 30 m to the west, then 5 to the east in 45 seconds

What effect would decreasing the distance between objects have on their gravitational attraction to each other?

Violet Colour in the spectrum is at the bottom whereas red Colour is at the TOP why

Which of the following water samples would be considered acidic

A linearly-polarized electromagnetic (EM) wave has an electric field with amplitude 1000 V/m. You hold a a linear polarizer in front of it and rotate the polarizer so that all of the EM wave is blocked. You then rotate the polarizer 30 degree.

Let y'=4 x. find all values of r such that y = rx^{2} satisfies the differential equation. if there is more than one correct answer, enter your answers as a comma separated list.

What are the starting materials for nuclear fission

Why is it possible to throw a 0.145 kg baseball much further than a 7 kg bowling ball?