If a person does 3 sets of pushups at 15 reps a set, how many total pushups has that person done?

If element ex has 52 protons how many electrons does it have

How do the properties of salt compare with the properties of sodium and chlorine

The average distance from Earth to the Moon is 384,000 km. In the late 1960s, astronauts reached the Moon in about 3 days.

How much current flows through a 12-ohm flashlight bulb operating at 3.0 volts?

A certain string breaks when a force of 200 N is exerted on it. If two people pull on opposite ends of the string, each with a force of 180 N, will the string break? Explain

What type of energy comes from the food that we eat?

Which of the following are vector quantities? check all that apply. a. time b. displacement c. force d. mass

Imagine you are on a bus with a helium balloon tied on a string tied to the seat in front of you. the bus stops short to avoid running over a rabbit and you are thrown forward. what happens to the balloon in relation to the bus? 1. the balloon pops.

Give one reason why the density of iron is higher than the density of oxygen

In which region of the periodic table do the elements NOT normally react chemically with other elements? A. metals B. metalloids C. nonmetals D. noble gases