If an element has 7 electrons how many will be in the 2nd energetic level

Where are the nucleus and the electrons located in this atom

What is the value of x in the expression: x = p (p+q) + 4 if p = - 2 and q = 7

What is the total charge of 1.0g of electrons?

Imagine a landing craft approaching the surface of callisto, one of jupiter's moons. if the engine provides an upward force (thrust) of 3264 n, the craft descends at constant speed;

How much kinetic energy does a 50 kg object have if its moving at a velocity of 2 m/s? A) 25 joules B) 50 joules C) 100 joules D) 200 joules

What happens to the total mechnical energy of the apple as it falls from the tree?

Fair Bonus Question: Derive the equation for gravitational potential energy, starting with the definition of work.

A juggler throws a bowling pin into the air with an initial velocity. Another juggler drops a pin at the same instant.

The liquid electrolyte in the battery typically takes what kind of net charge? a. positive b. negative c. neutral

Relating to Newton's Third Law, action and reaction, what is the reaction when a rocket expels gas, smoke and flames from the nozzle end of the rocket engine?