In the atom, the nucleus is charged positive and the electron is charged
negative. So we know that they're attracted to each other. It takes energy
to keep the electron from falling into the nucleus.
-- If you want to drag the electron farther out from the nucleus, you have to
do work on it ... put energy in to it.
-- When the electron loses energy, it falls in closer to the nucleus. The more
energy it loses, the closer to the nucleus it falls.
-- From the list of choices in the question, the <span>electron moving <em>two energy levels </em>
<em>closer to the nucleus</em> loses more energy than any other choice.
</span>
a caliper is used to make a precise measurement of length within tubing or on nuts/bolts, or anything really
Answer:
the last one
Explanation:
Boiling points and melting points are similar because they both involve the change in a state of a material but they are different because boiling point involves a change from a liquid to a gas and melting point involves a change from a solid to a liquid.
Answer:
The force F1 = 10 N when d1 = 4 m. The square of 4 m is d1² = 16 m². When d = 2 m, its square is d2² = 4 m². Solving for F2
F2× d2² = F1× d1²
F2 × 4m² = 10 N × 16 m²
F2 = (10 N × 16 m^2) / 4 m² F2
= 10 N× (16 m² /4 m²)
F2 = 10 N × 4
F2 = 40 N
The gravitational force produced when they are kept 2 meters apart is 40 N.