How many electrons should be in an atom's valence shell (with the exception of hydrogen and helium) to become stable?

there is a fish called an archer fish that shoots drops of water at insects resting on branches above the water. If the Archer fish is aiming at an insect with (x, y) coordinates of (0.5,0.

A tow truck exerts a force of 11,000N to pull a car out of a ditch. It moves the car a distance of 5m in 25 sec. What is the power of the tow truck?

In order to slide a heavy cabinet across the floor at constant speed, you exert a horizontal force of 600 N. Is the force of friction between the cabinet and the floor greater than, less than, or equal to 600 N? Explain your answer.

2. When heat is absorbed A. molecules move more slowly B. molecules move more rapidly C. there is no change in molecular motion D. temperature remains unchanged

If the reaction below is a double replacement reaction, what will the product of the reaction be? NaCI + agNO3

Two lab carts are pushed together with a spring mechanism compressed between them. Upon release, the 5.0 kg cart repels one way with a velocity of 0.12 m/s. The 2.0 kg cart goes the other way. At what velocity does it travel?

A bowling ball has a mass of 7.2 kg and a weight of 70.6 N. It moves down the bowling alley at 1 m/s and strikes a pin with a force of 15.0 N. What is the force that the pin exerts on the bowling ball?

an electric clothes dryer has a resictance of 16 Ohms it drawes 15 A of current what is the voltage in volts of the wall outlet that it is pluged into

A lorry with a mass of 5000kg accelerates to overtake a caravan on the motorway. Its acceleration is 1.5m/s². What force must the engine be providing? You can ignore the effects of friction and air resistance

Norma kicks a soccer ball with an initial velocity of 10.0 meters per second at an angle of 30.0% if the ball moves though the air for 3.2 seconds what's the horizontal distance traveled by the ball