What does speed tell us

At an air show, Julia saw a fighter jet fly by. Three seconds later she heard the sonic boom of the sound barrier being broken. Did the jet break the sound barrier as it passed Julia?

A kitchen mixer requires 375 W of electric power. If a voltage of 125 V is available to operate the mixer, what is the required current for its operation?

Two objects are in freefall. Object A experiences a gravitational force of 10 N. Object B experiences a gravitational force of 20 N. Which experiences the greater acceleration?

At some instant the velocity components of an electron moving between two charged parallel plates are vx=2.5*105m/s and vy=5.0*103m/s . Suppose the electric field between the plates is uniform and given by E⃗ = (120N/C) j^ .

What are three ways in which people use microwaves?

The volume of a gas is reduced when the temperature is decreased

Describe the Dark Ages of our universe.

Two boxes, P and Q, are at rest on a frictionless horizontal surface. A light, flexible cord connects them. The mass of P is greater than the mass of Q.

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