Is the element germanium natural or man made?

They are very efficient chemicals that can be used

A car traveling with constant speed travels 150 km in 7200 s what is speed of the car

4. Two students are sitting in the cafeteria eating lunch. They move so that the distance between them is now one-quarter as great as it was before. The force of attraction between them (gravitational that is) is now times as great.

Receiver Questions: 1) Going back to the idea of a plane before take off. Why was the sound of the engine louder when it goes from low to high power goes from low to high power?

A person jumps from the roof of a house 3.1-m high. When he strikes the ground below, he bends his knees so that his torso decelerates over an approximate distance of 0.70 m. If the mass of his torso (excluding legs) is 42kg.

Suppose a body has a mass of 60 kilograms and a velocity of 2 meters per second upward. What is the linear momentum?

Reflection and abssorption prevent some

Why is it important to change only one experimental variable at a time in an experiment?

A 0.0663 kg ingot of metal is heated to 241◦C and then is dropped into a beaker containing 0.395 kg of water initially at 25◦C. If the final equilibrium state of the mixed system is 27.4 ◦C, find the specific heat of the metal.

What does it mean when we say an atom has decayed?