When an atom that has no charge loses two electrons, it becomes a

positive ion.

negative ion.

positive isotope.

negative isotope.

Using hookes law find the distance a spring with am elastic constant of 4 N/cm will stretch if a 2 newton force is applied to it

how long will it take a sonar pulse that travels at the speed of 1,500m/s to return from a sunken ship that is at a depth of 3,750m?

A bullet can travel at a speed of over 1000 m/s. When a bullet is fired from a rifle, the actual firing makes a distinctive sound, but people at a distance may hear a second, different sound that is even louder. Explain the source of this sound.

A sample of marble has a volume of 6cm3 and density of 2.76 G / cm3 what is its mass

During the day, when the Sun is shining, the ground gets warm mainly as a result of ... heat from Earth's core being conducted to Earth's surface. convection currents in the atmosphere heating the ground.

Metamorphic rocks may generally be distinguished from igneous rocks because

What is matter? A. matter is an element B. matter is anything that is made of atoms and that has mass C. matter is a compound D. matter is anything that is made of organic substances and is found on the earth

What is the outcome of all chemical changes when two substances are combined? A new substance forms with identical properties. The two substances release an odor. The two substances change color. A new substance forms with different properties.

Your myth: Dogs and wolfs are the same species Fact: Evidence:

Friction is a force that speeds up motion between two surfaces that are in contact