O núcleo de um átomo possui 5 prótons e 6 nêutrons. Determine o número atômico (Z) r o. número de massa (A)

Consider six proposed properties of electromagnetic radiation: wave speeds of 3.00*108 km/s3.00*108 km/s and 3.00*108m/s3.00*108m/s, wavelengths of 673 nm673 nm and 0.221 nm0.221 nm, and frequencies of 2.39*1018 Hz2.39*1018 Hz and 4.85*1014 Hz4.

Which term describes the energy of motion?

Why is the time needed to vaporize the sample of water significantly greater than the time needed to melt the sample? A) Significantly more energy is needed to lower the kinetic energy of the molecules.

The nuclei of all atoms have A. positive charges B. negative charges C. no charges

What is the intensity of a sound with a measured intensity level of 84 db? (i0 = 10-12 w/m2) ?

4. Water is flowing at 12m/s in a horizontal pipe under a pressure of 600kpa radius 2cm. a. What is the speed of the water on the other side of 0.5cm radius? b. What is the pressure of the other side?

What caused the solar system to form a disk?

Under what circumstances can air resistance exercises ignored?

How does friction affect all moving objects?

A force of 5N compresses a spring by 4cm. Find the force constant of the spring.