Suppose Galileo dropped a lead ball (100 kilograms) and a glass ball (1 kilogram) from the Leaning Tower of Pisa. Which one hit the ground first?

A major component of gasoline is octane (C8H18). When octane is burned in air, it chemically reacts with oxygen gas (O2) to produce carbon dioxide (CO2) and water (H2O). What mass of octane is consumed by the reaction of 1.2 g of oxygen gas?

What type of rock is formed from magma that stays underground as it cools? intrusive igneous extrusive igneous intrusive metamorphic extrusive metamorphic

What is the role of equations in this course?

Two factors that affect force are: A. mass and weight B. friction and inertia C. strength and direction D. mass and strength

As mentioned, electric fields are extremely interconnected with magnetic fields and these two types of force can travel together in perpendicular vibrations known as:

Ina shoots a large marble (Marble A, mass: 0.08 kg) at a smaller marble (Marble B, mass: 0.05 kg) that is sitting still. Marble A was initially moving at a velocity of 0.5 m/s, but after the collision it has a velocity of - 0.1 m/s.

The elements that touch the zigzag line ar classified as

The half-life for a 100-gram sample of radioactive element X is 5 days. How much of element X remains after 10 days have passed? A. 25 g B. 100 g C. 75 g D. 50 g

During a transit, a passes in front of its parent star, temporarily decreasing the star's brightness by a small amount.

How much of each food dollar goes to the producer