WILL GIVE BRAINLIEST PLZ HELP The nucleus of an atom is made up of:

Question 1 options:

neutrons and electrons

protons and electrons

protons and neutron

Question 2 (1 point)

How is the number of protons represented in the periodic table?

Question 2 options:

atomic number

mass number

atomic mass

isotope

Question 3 (3 points)

Question 3 options:

83.80

36

Kr

1.

element symbol

2.

atomic mass

3.

atomic number

Consider the following position function. find (a) the velocity and the speed of the object and (b) the acceleration of the object. bold r left parenthesis t right parenthesisr(t)equals=left angle 6 t superscript 4 baseline comma 2 t cubed right angle6t4,2t3 for tgreater than or equals≥0

Estimate the magnitude of the electric field due to the proton in a hydrogen atom at a distance of 5.29×10 to the power of −11 m, the expected position of the electron in the atom.

An air standard cycle with variable specific heats is executed in a closed system and is composed of the following four processes. 1-2 isentropic compression 100 kpa and 22°c to 600 kpa 2-3 v=constant heat addition to 1500 k 3-4 isentropic expansion to 100 kpa 4-1 p=constant heat rejection to initial state (a) show the cycle on p-v and t-s s (b) calculate the net work output per unit mass (409 kj/kg) (c) determine the thermal efficiency (47.9%)