determine the smallest mass of lead that when tied using a string to a wooden boat on a pond will be enough to sink the toy boat. assuming specific gravity of wood is 0.5 and density of water is 1000kg per cubic metre?

What is the difference between an energy pyramid and a biomass pyramid?

lets say that an object of a certain volume has a certin mass. what happens to its mass when you double its volume?

Which value is equivalent to 178 centimeters? a. 1.78 millimeters b. 17.8 millimeters c. 1.78 meters d. 1.78 * 10-2 micrometers e. 1.78 * 10-5 kilometers

You have a ball in your hand above the ground at rest which you then drop. What energy is involved in each part of this situation and how do we know that total mechanical energy has been conserved? Explain with and without air resistance present.

9. (True or False) During an early morning rain shower, Jim could see a rainbow to the north as the sun's rays in the east broke through the clouds, illuminating the landscape.

What is the most advanced life form on earth

Which EM wave is about the size of humans?

Describe how the Catapult works?

Newton's third law of motion states that the force pair acting on different objects consist of two forces that

While working on her science fair project Venus connected a battery to a circuit that contained a light bulb. Venus decided to change the light bulb to a higher resistance, but she wanted to keep the current the same.