Water can dissolve many substances because it has an overall negative charge, allowing it to attack positively-charged ions.True or False?

Answers

Answer 1

Answer: true
1: Cation-positive charge2: Isotope-diff # of neutrons3: Element-it can be found on the periodic table(pure)4: Anion-negative charge5: Compound-even ration6: Ion-element with a charge(cations and anions are a more specific way of describing ions)Hope this helps!

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Two friends are working out together using weights:-James lifts 20kg weights up at a velocity of 1.9m/s
-Kayla lifts 15kg weights up at a velocity of 2.6m/s
0
Which friend is creating more momentum?

Answers

Answer:

Kayla. You can calculate it using the formula for momentum: momentum=mass×velocity and find the bigger number between the two momentums

One particular confound for the use of an adoption study of heritability is the phenomenon of _____ placement, in which a child is placed in a home that is similar to the home of the biological parents.A) unilateral
B) forced
C) matched
D) selective

Answers

Answer:

D) selective

Explanation:

The selective placement in the adoption studies refers to practice by which the adoption agencies tend to match some definite characteristics of the adopted child's adopted parents than that of child's biological parents.

It results in the correlation of the environments between the biological relatives raised in two different homes.

For example, when the child is placed in a home which is similar to the home of the biological parents.

The waves produced by earthquakes are known as seismic waves.

Answers

He's they are known as sesmetic waves sesmetic means earthquake

The greater the concentration of sulfur and nitrogen oxides, the higher the pH of precipitation.True
False

Answers

Answer: False

Nitrogen and sulfur dioxide are acidic oxides in nature. The burning of fossil fuels and other sources are responsible for addition of these oxides in the atmosphere of earth. These oxides mixed with water vapor causes acid rain. Being acidic in nature they will have low pH value. Therefore, greater the concentration of sulfur and nitrogen oxides, will lower the pH value of precipitation.

Answer:

False

Explanation:

the resultant resistance of two resistance wires in series combination is 108 ohm and in parallel combination is 24 ohm. find the value of individual resistance

Answers

Call the two resistors 'x' and 'y'.

In series, the resultant resistance is their sum: x + y = 108
Notice that y = 108 - x. I think we'll use that very soon.

In parallel, the resultant resistance is (their product) / (their sum) = xy/108 = 24

Multiply each side by 108:

xy = 2,592

Substitute for 'y' :

x(108 - x) = 2,592

108x - x² = 2,592

-x² + 108x - 2,592 = 0

x² - 108x + 2,592 = 0

Use the quadratic formula to find:

x = 72 . . . then y = 108 - 72 = 36
or
x = 36 . . . then y = 108 - 36 = 72

The individual resistors are 36Ω and 72Ω .

which of the following is the true statement ? a. the magnetic force is perpendicular to the magnetic field direction. b. the magnetic force is parallel to the magnetic field direction. c. the magnetic force is antiparallel to the magnetic field direction. d. none of these

Answers

Answer:

A, magnetic force is always perpendicular to the magnetic field. The direction of the magnetic force is perpendicular to both the direction of the velocity and the direction of the magnetic field.

Final answer:

The magnetic force is always perpendicular to the direction of the magnetic field, according to the Right-Hand Rule in Physics. Neither parallel nor antiparallel statements are correct.

Explanation:

The correct answer to your question, in regard to the relationship between magnetic force and magnetic field direction, is option A. According to the Right-Hand Rule in Physics, the magnetic force exerted on a moving charged particle is always perpendicular to the direction of the magnetic field. This means the force and field are not parallel or antiparallel to each other, but rather, they meet at a 90-degree angle.

Learn more about Magnetic Field here:

brainly.com/question/31599818

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