The neucleus of about atom contains positive or negative electrons

3 ways bacteria can be good

a motor pulls up a block suspended on a string, so that the tension in the string is equal to the qeight force on the block. the block has mass m, the distance raised is h and the power output of the motor is P.

When the temperature of the air is 25°C, the velocity of a sound wave traveling through the air is approximately A. 347 m/s. B. 332 m/s. C. 357 m/s. D. 320 m/s.

What happens to the total mass of a substance undergoing a physical change? It stays the same. It doubles. It triples. It is reduced.

Can the sum of two equal vectors be equal to either vector?

A net force of 30 N is applied to an object with a mass of 15 kg. The object accelerates at 2 m/s2. If half the force is applied, what happens to the acceleration?

A 770 n man stands in the middle of a frozen pond of radius 10.0 m. he is unable to get to the other side because of a lack of friction between his shoes and the ice. to overcome this difficulty, he throws his 1.

Which equation represents the total energy of a system?

The weight of a 100 N laser printer is spread over 0.5m2. What is the pressure it exerts? A) 50 N/m2 B) 200 N/m2 C) 500 N/m2

Comparing and contrasting ionic and covalent bonds?