How many objects to Newton's first and second laws deal with

If a platinum atom has 78 protons. How many electrons does it contain?

Match the terms to the correct descriptions. Question 1 options: a surface shaped in such a way that the center curves inward like this: light behavior in which light goes through a medium and bends, going in a different direction.

Sound waves are created by which of the following: A.) Vibrations of particles in the air B.) Vibrations in your vocal cords C.) Vibrations of musical instruments D.) All of the above

We have seen that an electric field must exist inside a conductor that carries a current. How is that possible in view of the fact that in electrostatics we concluded that the electric field must be zero inside a conductor?

What is the meaning of smooth?

Our 12 V car battery does not appear to be functioning correctly, so we measure the voltage with a volt meter and find that the voltage on the battery is only 9V.

A strong lightning bolt transfers about 27.88 C to Earth. How many electrons are transferred? The elemental charge is 1.602 * 10-19 C. The lightning bolt discharge lasts one millisecond.

What is the speed of a bobsled whose distance-time graph indicates that it traveled 121m in 26s? m/s

Which formula describes newton's second law of motion?

Which statements regarding the sun's nuclear fusion are true? select all that apply. a. nuclear fusion only occurs in the core. b. hydrogen fuses to form helium. c. fusion in the sun will continue for at least 1 trillion more years. d.