What is an ore?

a metal

a rock that contains a nonmetal resource

a nonmetal resource

a rock that contains a metal resource

When you hear sound pulses (beats), describe how you will determine the beat frequency. Include in your answer what steps you will take to reduce percentage uncertainty, as well as how you will turn raw measurements into your final answer.

Can an object have both kineric energy and potential energy at the same time?

Why might the plant in the dark have grown taller?

A 0.2 kg tennis ball starts at rest and then a racket applies a force of 2400 N for 0.3 seconds. Find the momentum of the ball,

Variations to the forehand stroke are not allowed. True False

An 8.5 l tire is filled with 0.55 moles of gas at a temperature of 305 k. what is the pressure of the gas in the tire?

Total internal reflection occurs only if

A radioactive nucleus at rest decays into a second nucleus, an electron, and a neutrino. the electron and neutrino are emitted at right angles and have momenta of 9.80 ✕ 10-23 kg·m/s, and 5.70 ✕ 10-23 kg·m/s, respectively.

A child is sliding down a slide at the playground. Is the mechanical energy conserved? Why or why not? The mechanical energy is conserved. There is as much KE at the end as there was PE at the beginning. The mechanical energy isn't conserved.

Which term refers to the rate at which the velocity of a moving object changes? A. acceleration B. displacement C. resonance D. turbulance