Which element has a complete valence electrons hell?

What is the definition of light

The radius of a circle is increasing at a constant rate of 0.2 meters per second. what is the rate increase in the area of the circle at the instant when the circumference of the circle is 20π meters? v

Aristarchus measured the relative sizes of the Earth, Moon, and Sun using eclipses and phase timings. Since the Moon is smaller than the Earth and orbits the Earth and the Earth is smaller than the Sun, he deduced that the Earth must orbit the Sun.

Girl who's mass is 52kg, experienced a net force of 1800N at bottom of a roller coster loop during her school physics field to the local amusement park, determine Sophia's acceleration at location.

A TV draws 0.867 A of current when connected to a 122 V outlet. It's resistance is 140.71. A.) How many electrons pass through the TV per minute? B.) How much electrical energy does the TV convert to other forms of energy per minute?

The passing of heat through a material while the material itself stays in place. A. radiation B. conduction C. convection

What would result from under-coverage? A. a lack of accurate result B. an incorrect independent variable C. an experiment D. accurate result

What can be said about the force of gravity acting on an object that is floating stationary underwater and not moving up or down? A. The buoyant force equals the force of gravity, so there is no net force. B.

A frog in a hemispherical pod finds that he just floatswithout sinking in a fluid of density 1.25 g/cm3. If the pod has a radius of3.00 cm and negligible mass, what isthe mass of the frog?

What is the reasonable estimate for Lim g (x)