The human body is 65% oxygen by mass. If a person has a mass of 75.0 kg, what is the mass oxygen in his body?

a proton moves with constant velocity in the + x direction through a region of uniform electric and magnetic fields. the magnetic field in the region is in the negative z-direction. what is the direction of the electric field in this region?

Why are some animals and plants can become pests when introduced into Australia

What are the two main types of waves?

Which one of the following statements about sulfuric acid is correct

Which type of energy does a swinging pendulum demonstrate? A. chemical energy B. only kinetic energy C. both potential and kinetic energy D. only potential energy

What is root-mean-square current?

Which of these is an element? O carbon O air O carbon dioxide water

What could result if the liver was not working properly?

A machine gun fires 10 rounds per second. The speed of the bullets is 300 m/s. What is the distance between the flying bullets?

A runner with a mass of 75kg runs 6m/s calculate the kinetic energy stored in the runner