How was life created after the Big Bang?

g Problem 4. A 2000 kg railway freight car coasts at 4.4 m/s underneath a grain terminal, which dumps grain directly down into the freight car. If the speed of the loaded freight car must not go below 3.

Which statement best describes plastics? plastics are poor insulators because the electrons in the atom are tightly bound and unable to move between other atoms.

In the Bohr model, as it is known today, the electron is imagined to move in a circular orbit about a stationary proton.

A juggler throws a bowling pin into the air with an initial velocity. Another juggler drops a pin at the same instant.

Albert stands on a frictionless turntable, holding a bike wheel. Both Albert and the wheel are initially stationary. Albert gives the bike wheel a good spin, and it begins rotating clockwise.

Determine the velocity of a beam of electrons that goes undeflected when moving perpendicular to an electric and magnetic field. The electric field and the magnetic field are also perpendicular to each other and have magnitudes 7.7 x 10^3 V/m and 7.

What is the electric potential of a 2.2 µC charge at a distance of 6.3 m from the charge? Recall that Coulomb's constant is k = 8.99 * 109 N • ___ V What is the electric potential at a distance of 99 m from the charge?___ V

what is a possible unit for the product VI, where V is the potential difference across a resistor and I is the current through the same resistor?

In old western movies, cowboys often would put their ear to a train track to listen for an oncoming train. What benefit would this method provide over listening for a train by listening for sound through the air? A) The sound would be louder.

What is meant by "reflecting" and "refracting" telescopes?