Helen is standing in the hallway with her friend Janet, next to Helen's locker. Each girl has a body mass of 48 kilograms (kg), and thus each exerts a force of 470.4 Newtons (N) on the hall floor. What is the total force, in Newtons (N), that the hall floor exerts on the pair of girls?A. 940.8 N
B. 96 N
C. 960.4 N
D. 48 N

Answers

Answer 1

Answer: The right answer for the question that is being asked and shown above is that: "A. 940.8 N." Helen is standing in the hallway with her friend Janet, next to Helen's locker. Each girl has a body mass of 48 kilograms (kg), and thus each exerts a force of 470.4 Newtons (N) on the hall floor.

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The combined gas law sets up a relationship between which of the following?A. pressure and temperature only
B. volume and temperature only
C. volume and pressure only
D. pressure, volume, and temperature

Answers

Answer:

The correct option is D

Explanation:

The combined gas law is a combination of the three gas laws; Boyle's law, Charles' law and Gay-Lussac's law. It describes the relationship of the product of the pressure, volume and temperature of a gas to a constant as shown in the formula below

P₁V₁/T₁ = P₂V₂/T₂

Where P₁ is the initial pressure

V₁ is the initial volume

T₁ is the initial temperature (in Kelvin)

P₂ is the final pressure

V₂ is the final volume

T₂ is the final temperature (in Kelvin)

The combined gas law combines the three gas laws: Boyle's Law, Charles'Law, and Gay-Lussac's Law. It states that the ratio of the product of pressure and volume and the absolute temperature of a gas is equal to a constant. When Avogadro's law is added to the combined gas law, the ideal gas law res

Answer is volume and pressure only

Newton’s first law of motion was a giant leap forward in scientific thought during Newton’s time. Even today, the idea is sometimes difficult at first for people to understand.

Answers

The correct answer for the question that is being presented above is this one: "A rolling ball eventually slows down and comes to a stop." Newton’s first law of motion was a giant leap forward in scientific thought during Newton’s time. Even today, the idea is sometimes difficult at first for people to understand.

On the basis of electronegativity, which pair of elements is most likely to form monatomic ions? responses a. Ba and O b. Cs and Rb c. O and F d. Na and K

Answers

On the basis of electronegativity, elements that are far apart on the periodic table are more likely to form monatomic ions. This is because the larger the electronegativity difference between two elements, the more likely it is for one element to gain or lose electrons to achieve a stable electron configuration.

Out of the given options, the pair of elements that are the farthest apart on the periodic table is option d. Na (sodium) and K (potassium). Both sodium and potassium are in Group 1 (alkali metals), but potassium is located one period below sodium, making it more likely to form a monatomic ion due to the larger electronegativity difference.

Therefore, the answer is d. Na and K.

The light intensity of a source is 100 candelas. The illuminance on a surface is 4 lux. How far is the surface from the source?

Answers

The answer is 5 meters.

The illuminance on a surface (E) is equal to the light intensity (I) divided by the square distance from the light source (d):
E = I ÷ d² [=] candela/ square meters = lux.
The unit of the illuminance is lux.

So, it is given:
E = 4 lux
I = 100 candelas
d = ?

If:
E = I ÷ d²
Then
d² = I ÷ E
⇒ d² = 100 ÷ 4
⇒ d² = 25

If we put both sides of the equation under the square root, then:
√d² = √25
⇒ d = 5 meters.

Therefore, the surface is 5 meters far from the light source.

A solution containing large amount of solute in comparison to solvent is... A ) aqueous,b. concentrated,
c. Diluted, and
d. soluble

Answers

A solution containing large amount of solute in comparison to solvent is concentrated. Meaning the solute's concentration is high. The answer to this question is letter "B" or "B. Concentrated". I hope this helps you on your assignment.

the answer will be b)

How many moles is 1.50x10^23 molecules of NH3?

Answers

The number of moles that are 1.50 x10^23 molecules of NH3 are

=0.249 moles

calculation

The number of moles is calculated using Avogadro's law constant

that is According to Avogadro's law

1 moles of a substance = 6.02 x10^23 molecules

? moles = 1.50 x10^23 molecules

by cross multiplication

= [( 1.50 x 10^23 molecules x 1 moles) / (6.02 x10^23)] = 0.249 moles

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