What is an example of an electron source?

Battery

Lead Wire

Light Bulb

What is reflexive fear?

A block and a ball have the same mass and move with the same initial velocity across a floor and then encounter identical ramps. The block slides without friction and the ball rolls without slipping.

Why are there temperature differences on the moon's surface even though there is no atmosphere present?

When the rooster crows, the sun rises. therefore, the rooster causes the sun to rise?

What is the g force for a car crash

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

This is a number, as of years, days, minutes, or seconds representing such an interval. The SI standard unit of this is the second.