Which elements are found in a high proportion in Earth's crust?

aluminum and iron

oxygen and silicon

calcium and sodium

potassium and magnesium

How does newton's second law relate to the force of gravity?

Commercial airplanes are sometimes pushed out of the passenger loading area by a tractor. An 1800-kg tractor exerts a force of 1.75*10^4N backward on the pavement, and the system experiences forces resisting motion that total 2400 N.

What causes chemical weathering?

which of the laws of motion states to every action there is an equal but opposite reaction letter a Newton's first law see Newton's third law Newton's second law or the law of conversation of momentum

After landing on an unexplored Klingon planet, Spock tests for the direction of the magnetic field by firing a beam of electrons in various directions and by observing the following: Electrons moving upward feel a magnetic force in the NW direction;

Design an investigation to compare the durability of the three different brands

The surface area of the skin of a person who is 70 inches tall and weighs w pounds can be estimated by s (w) equals=342 w superscript 0.425342w0.425 , where s is in square inches.

The train speeds passed Holly at 70 km/h north ward. This spider crawls past lukes foot in the same direction at 30 m/h. What is the velocity of the spider relative to Holly?

What is the name of a particle with no charge in an atom?

What voltage produces a current of 500 amps with a resistance of 50 ohms?