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3 years ago

The velocity of a car goes from 0 m/s to 60 m/s in a forward direction. What is the best explanation for this change?

Chemistry

2 answers:

Slav-nsk [51]3 years ago

5 0

The answer is B

I'm glad I could help!

mixer [17]3 years ago

3 0

Thank you for posting your question here at brainly. I hope the answer will help you. Feel free to ask more questions.
When the velocity was 0 m/s, all the forces acting on the car were balanced. The velocity changed because at least one unbalanced force is acting on the car.

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(“What is the effect of temperature on the solubility of a solid in a liquid?”)

mario62 [17]

The solubility increases

6 0

3 years ago

Read 2 more answers

A graduated cylinder initially contained 11 mL of water and then an 8 g block of wood is put into it, changing the volume to 15

Paul [167]

Answer:

Density is 2

Explanation:

Do the final volume of water divided by the inital

volume of water to get 4

15-11 = 4

Volume = 2

Mass = 8

Then to the equation m/v

8/4 = 2

Density = 2

8 0

3 years ago

Question 1 of 10

Natalka [10]

Answer:

Explanation:

A- incorrect, not in alphabetical order

B- incorrect, symbol for salt in NA not SA

C- correct

D- incorrect, not based on discovery

5 0

4 years ago

Iodine-131, t1/2 = 8.0 days, is used in the diagnosis and treatment of thyroid gland diseases. If a laboratory sample of iodine-

SashulF [63]

Answer:

32,0 days.

Explanation:

The radioactive decay follows:

$N_{t} = N_{0}e^{\frac{-0.693t}{t_{1/2}}$

Where Nt is the concentration in a time t (6,22x10¹⁷), N₀ is the initial concentration (9,95x10¹⁸) Half life time is 8,0 days and t is the time it take to drop this concentration. Replacing:

$6.22x10^{17} = 9,95x10^{18}e^{\frac{-0.693t}{8 days}$

$0,0625 = e^{\frac{-0.693t}{8days}$

$ln 0,0625 = {\frac{-0.693t}{8days}$

$-2,77*8days = -0.693t$

$-22,2days = -0.693t$

$32,0days = t$

It take 32,0 days

I hope it helps!

7 0

3 years ago

Name the gas liberated when ethanol react with sodium metal?

expeople1 [14]

When sodium reacts with ethanol, hydrogen gas liberates and leaves a colorless solution of Alkoxide

Reaction: 2CH₃CH₂OH + 2Na → 2CH₃CH₂ONa + H₂

So, in short the answer of your particular question will be "Hydrogen Gas"

Hope this helps!!!

4 0

4 years ago