Which two elements have the same number of valence electrons?

a. Barium

b. Silicon

c. Neon

d. Carbon?

You wish to cook some pasta and so take some water and heat it on a stove. If you use 2000 grams of water with an initial temperature of zero degrees C, how much energy would you need to add to raise the temperature to 100° C is all of the stove

A spring is 14cm long. Three masses are hung from it and then it is measured again. Now it is 19.5cm long. What force did the three masses provide? The spring constant for the spring is 30N/m.

Hree resistors having resistances of R1 = 1.68 Ω, R2 = 2.51 Ω, and R3 = 4.76 Ω, are connected in parallel to a 28.0 V battery that has negligible internal resistance. Find: a. the equivalent resistance of the combination. b.

Which of the following traits is acquired

Object A has a mass of 100 grams, and object B has a mass of 150 grams. They are both traveling at the same velocity. Which can you conclude

A circuit is built based on the circuit diagram shown. A diagram of a closed circuit with a power source on the left labeled 60 V. There are 3 resistors in parallel, separate paths, connected to it labeled 40 Ohms, 50 Ohms and 30 Ohms.

After harvesting their main crops, such as corn and wheat, many farmers plant a second crop called a cover crop. This cover crop grows during the fall and winter and is then plowed over in the spring. What is the main purpose of a cover crop? A.

A light wave is traveling straight up out of the ocean then moves out into the air how do you expect the movement of the light wave to change the light wave will

To verify that this expression for (vf) α has the correct units of velocity, you need to perform some unit analysis. begin by finding the equivalent of a volt in terms of basic si units.

Which of the following best describes transverse waves