What is the weight of a 100 kg person standing on Earth, where Force (gravity on Earth) = 9.81 m/s/s (9.81 m/s^2)?

Petroleum contains energy. a. light b. kinetic c. chemical d. mechanical

)consider two positively charged particles, one of charge q0 (particle 0) fixed at the origin, and another of charge q1 (particle 1) fixed on the y-axis at (0,d1,0). what is the net force f⃗ on particle 0 due to particle 1?

How can you measure the amplitude of a longitudinal wave?