D. She rotated the figure 180 degrees about the origin
Answer:
In equation form, Newton's second law of motion is a=Fnetm a = F net m . This is often written in the more familiar form: Fnet = ma. The weight w of an object is defined as the force of gravity acting on an object of mass m. ... Friction is a force that opposes the motion past each other of objects that are touching.
Explanation:
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Answer:
C) Ar-37
Explanation:
A positron is a positively charged electron. It has the same mass as that of an electron, but opposite charge. It is the counterpart of an electron.
The reaction involving the emission of a positron by k-37 would produce a Ar-37, which is an unstable isotope of Argon. In this emission, there must not be a particle loss or creation, the addition of the mass number and proton number on LHS must be the sane as that on RHS of the equation.
An isotope is ability of an element to exist in two or more forms with the same atomic number but different mass number.
Answer:
1. Molecular solids are usually excellent conductors of electric current.
Explanation:
Molecular solids are actually insulators (prevent electricity).
When the system turns pink, then the end point has been attained.
<h3>What is the end point?</h3>
The end point or the equivalence point is the time when the reactants have undergone transformation in accordance with the reaction equation. The reaction in this case is; HCl + NaOH -----> NaCl + H2O.
We know that phenolphthalein is colorless in acid but red in a base. The color at end point is pink. Thus, when the system turns pink, then the end point has been attained.
Learn more about end point:brainly.com/question/4518249
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