How many electrons are in a nickel ion that has an atomic number of 28 and a positive charge of 2?

How to find the maximum amount of a substance that will dissolve using a graph?

Suppose that with a pulley system, you need to exert a force of 1,400 N to lift a heavy object. But without the pulley system, you need to exert 4,200 N to lift the object. What is the mechanical advantage of the pulley system

In what state of matter are particles vibrating and moving at high speeds? Gas Liquid Solid Plasma

A company in san francisco uses petroleum products to make plastics arrange the sentence in the correct order to show how the company could be contributing to climate change. 1) Burning fuel realeases greenhouse gases.

Who did not have experimental evidence to support his theory of the atom? Dalton Thomson Rutherford Democritus

How do you get a resultant factor? A. Add two or more vectors B. Add two scalars C. Multiply two scalars D. Multiply two vectors

A panpipe is made of five pipes. The longest pipe is 25 centimeters long and the shortest is 5 centimeters long. Which of these pipe produces the highest-frequency sound and why?

Model rocket A is launched at an angle of 70° above the x axis, with an initial velocity of 40 m/s. An identical rocket B is launched under the same conditions at an angle of 90° above the x axis, also with an initial velocity of 40 m/s.

Why is it that when you throw a Frisbee, it flies better when it is normally thrown and not upside down?

Four blocks of weights are required using which any body whose weight is between 1kg and 40 kg can be weighed. Find the four weights