If element X has 90 protons, how many electrons does it have?

A cat, walking along the window ledge of a new york apartment, knocks off a flower pot, which falls to the street 280 feet below.

Which of the following could be a long-term health effect of chemical pesticide use? A. cancer B. neurological disorders C. all of these

An apple with a mass of 0.95 kilograms hangs from a tree branch 3.0 meters above the ground. What is the potential energy of the apple? 0.28 J 2.8 J 28 J 280 J

Would you be willing to travel to a star 10 light-years away and spend 5 years on the planet orbiting this star before returning home (25 plus years of your life) if you could travel at 99.

What are the major weather fronts? How do they differ from each other?

Do you mind if I use this example for my assignment?

A squirrel runs along an overhead telephone wire that stretches from the top of one pole to the next. It is initially at position xi=3.37 mxi=3.37 m, as measured from the center of the wire segment. It then undergoes a displacement of Δx=-6.

Imagine a 10 kg block moving with a velocity of 20 m/s to the left. calculate the kinetic energy of this block

Which do you think is the bigger problem among college students-the continued abuse of illegal drugs or the rising abuse of prescription and over-the-counter medications?

A man stands still on a moving walkway that is going at a speed of 0.4 m/s to the east. What is the velocity of the man according to a stationary observer?