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

aluminum and iron

oxygen and silicon

calcium and sodium

potassium and magnesium

An object in free fall travels a distance s that is directly proportional to the square of the time t. If an object falls 1088 feet in 8 seconds, how far will it fall in 10 seconds?

A student throws a rock horizontally off of a cliff. If the rock is thrown at 8.0 m/s from a cliff that is 64 meters high, how far from the base of the cliff will the rock land?

Inbreeding and hybridization are two different types of

The order of elements in the periodic table is based on?

Give a specific example of a vector quantity. Explain why this type of quantity would be used to describe this event.

If element X has 17 protons, how many electrons does it have?

A 2.0-kilogram laboratory cart is sliding across a horizontal frictionless surface at a constant velocity of 4.0 meters per second east. What will be the cart's velocity after a 6.0-newton westward force acts on it for 2.

A boat floats with 25% of its volume under water. a. What is the boatâs density? b. If the boat was made from 500 kg of metal, what is the volume of the boat? (Assume the air in the boat has negligible mass and density) c.

Why does each mineral have their own property, different from every other mineral?

Earth's tallest mountain ranges are found at plate boundaries