In which of these reactions is energy released? A. endothermic reactions B. exothermic reactions C. no reactions D. all reactions

A soup company wants to manufacture a can in the shape of a right circular cylinder that will hold 500 cm^3 of liquid. The material for the top and bottom costs 0.02 cent/cm^2, and the material for the sides costs 0.01 cent/cm^2.

What is electronegativity? An atom's ability to attract other electrons and form a chemical bond A type of electricity only found in some atoms The total number of electrons in an atom so A property of electrons that give them a negative charge

Planet z is 5000 km in diameter. the free-fall acceleration on planet z is 7.0 m/s2. part a what is the mass of planet z? express your answer using two significant figures.

A magnet sticks to a table leg. Based on this information, which material could the table leg be made of?

What is a type of matter made up of a combination of elements

A long rope with mass m is suspended from the ceiling and hangs vertically. A wave pulse is produced at the lower end of the rope, and the pulse travels up the rope.

What is the potential engery of a 150 kg diver standing on a diving board that is 10m high?

Identify the three controls on a automobile they are responsible for causing the car to accelerate

How is the energy of a nuclear reactor converted to electricity?

Assuming one nerve impulse must end before another can begin, what is the maximum firing rate of a nerve in impulses per second? Assume that it takes a millisecond for an impulse to travel through a nerve cell.