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3 years ago

Which of the following statements about blood alcohol concentration (BAC) are true?

Physics

2 answers:

mars1129 [50]3 years ago

5 0

D) Neither A or B are correct

KonstantinChe [14]3 years ago

3 0

Answer:

C: Both A and B are true

Explanation:

From DUI(Driving under influence) laws in most states in America, the DUI rule for underage individuals is that, it's illegal for an under 21 individual to have a blood alcohol content (BAC) of 0.08% or higher.

Now, in many states, it could a bit flexible with some considerations like, having the BAC to be as low as 0.02% or below or even having zero tolerance as the case may be.

Many of the states also have lose laws as well to this effect.

However, looking at the options, the correct ones will be options A & B because most states exhibit either options.

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A ball is dropped from a rooftop 60m high. <br> How long is the ball in the air?

alina1380 [7]

Answer: 3.49 s

Explanation:

We can solve this problem with the following equation of motion:

$y=y_{o}+V_{o}t-\frac{1}{2}gt^{2}$ (1)

Where:

$y=0 m$ is the final height of the ball

$y_{o}=60 m$ is the initial height of the ball

$V_{o}=0 m/s$ is the initial velocity (the ball was dropped)

$g=9.8 m/s^{2}$ is the acceleratio due gravity

$t$ is the time

Isolating $t$ :

$t=\sqrt{\frac{2 y_{o}}{g}}$ (2)

$t=\sqrt{\frac{2 (60 m)}{9.8 m/s^{2}}}$ (3)

Finally we find the time the ball is in the air:

$t=3.49 s$ (4)

7 0

3 years ago

In a chemical equation, the chemicals that react are considered . In a chemical equation, the chemicals that are produced are co

vovangra [49]

Answer

Hi,

In a chemical equation, chemicals that react are the reactants, while chemicals that are produced are the products/by products. Both sides of the equation must be balanced.

Explanation

When writing a chemical equation, reactants reacts to produce products. For example in the equation for formation of water, hydrogen combines with oxygen as 2H₂ +O₂→2H₂O where the first part before the arrow represent the reactants and the next part after the arrow are the products. Reactants are on the left where as products are on the right.Coefficient 2, in this cases is used for balancing the equation.

Good luck!

4 0

3 years ago

Read 2 more answers

What two types of atoms make a Covalent bond

dalvyx [7]

Ionic bonds are formed between a cation (metal) and an anion (nonmetal)

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3 years ago

In 1996, astronomers discovered an icy object beyond pluto that was given the designation 1996 tl 66. it has a semimajor axis of

antoniya [11.8K]

Answer : 2446 years.