How many valance electron do atoms need to be stable

What is the speed of a wave that has a wavelength of 0.4 m and a frequency of 10 Hz

When is a vessel operator required to use navigation lights? at all times when moored at a dock or pier when away from the dock during the day during periods of restricted visibility

Which term is the product of force and distance? A) power B) work C) net force D) acceleration

the electrostatic force between the top and bottom of this thundercloud is 1) undetermined 2) repulsive 3) zero 4) attractive

100 meters toward the shore in 25 seconds

What is a mealworm a worm, an insect or an amphibian

What is the kinetic energy of a vehicle that has a mass of 3,500 kg and is moving at 40 m/s

Why did the wright brothers construct their own wind tunnel?

John heats 1 kg of soup from 25 °C to 70 °C for 15 minutes by a heater. How long does the same heater take to heat 1.5 kg of the same kind of soup from 20 °C to 80 °C? The energy output per unit time by the heater is constant.

What is a light-year equal to? A. the distance light travels in one year B. the time it takes light to travel 10 trillion kilometers C. the mean distance between the Sun and the center of our galaxy D.