What is the group name in which helium is found?

When a thin crescent of the Moon is visible just before sunrise, the Moon is in its (a) waxing phase; (b) new phase; (c) waning phase; (d) quarter phase.

The sliders for the friction and spring stiffness have no numbers marked on them. Determine what they mean by changing them and seeing how the motion of a hanging mass changes.

Bullet with mass "m1" and speed "v1", hits a bag with mass "m2" and speed "v2=0", which means that the bag is standing still. Find the formula that explains how much speed has the bag after the bullet hits it.

A 1.0 m length of metal wire is connected to a battery, and a current of flows through it. What is the diameter of the wire? The resistivity of the metal is

Which is an example of electrical energy? a light bulb giving off heat but not light negatively charged particles causing a bulb to light up the light from a star seen in the sky

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