By scratching a mineral with various substances, scientists are able to determine the mineral's

Which explains how fossils for used as evidence about the theory of continental drift

What is the mass of a box with the weight of 78.2 N

A liquid does not have a definite shape, but it does have a definite volume.

How much work is done using a 60 watt light bulb for 1 hour

What are the three main types of stress in rock

A boat has a mass of 4040 kg. Its engines generate a drive force of 4660 N due west, while the wind exerts a force of 880 N due east and the water exerts a resistive force of 1400 N due east. Take west to be the positive direction.

Define the word projectile

Which is not a property of an electromagnetic wave? O It is made of magnetic fields It travels at the speed of light O It is made of electrical fields It carries energy only through matter

Explain why your weight would be less in the moon than on earth even though your mass would not change. Use the law of universal gravitation in your explanation.

ions are atoms or groups of atoms that have a positive or negative charge. which of the following statements is true of ions?