1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Shalnov [3]
2 years ago
6

2. A barrel floats down a river past two flags that are 100 meters apart. The time it took for the barrel to pass each flag is s

hown. What is the speed of the stream's
current?
2:15
2:43
O A 0.28 m/s
OB.2.2 m/s
OC.2.4 m/s
OD.3.6 m/s
Biology
1 answer:
Ksju [112]2 years ago
4 0

The speed of the stream's current is 3.6 m/s.

The given parameters:

  • distance between the two flags, d = 100 m
  • time when it passed the first flag, t₁ = 2:15
  • time when it passed the second flag, t₂ = 2:43

<h3>What is speed?</h3>
  • The speed of an object describes the rate of change of an object's distance.

The change in the time of motion of the barrel is calculated as follows;

Δt = t₂ - t₁

Δt = 2:43 - 2:15

Δt = 2 min 43 s - 2 min 15 s

Δt = 43 s - 15 s

Δt = 28 s

The speed of the stream's current is calculated as follows;

v = \frac{d}{t} \\\\v = \frac{100 \ m}{28 \ s}\\\\v = 3.57 \ m/s\\\\v \approx 3.6 \ m/s

Thus, the speed of the stream's current is 3.6 m/s.

Learn more about speed here: brainly.com/question/6504879

You might be interested in
What is the substitute of u in tRNA
Rama09 [41]
I believe it is A (Adenine)
3 0
3 years ago
Read 2 more answers
Which of the following best describes the function of the human nervous system? A. The nervous system transports oxygen and nutr
Andreas93 [3]
B. The nervous system collects and responds to information about the external and internal environment.
3 0
3 years ago
A population of frogs with slightly different coloring is an example of
Julli [10]

A population of frogs with slightly different coloring is an example of microevolution. Microevolution is the changes in the gene pool of a population that can be measured and observed in short periods of time within a population. Microevolution can take place in several ways such as gene flow, genetic drift, mutation and selection.






8 0
2 years ago
Regulatory proteins typically contain sites that can bind to other proteins or small molecules. Through such binding interaction
nasty-shy [4]

Answer:

Regulatory sites e.g enhancers and silencers

Explanation:

Gene expression involves the synthesis of gene products usually proteins and RNA. However, a certain product might not be needed at all or in small quantity. Gene regulation mechanism is the process that makes this happen. Gene regulation is the mechanism that acts to induce or repress the expression of a gene.

Gene regulation involves controlling the rate and manner of gene expression which is achieved through a set of regulatory proteins called transcription factors. Transcription factors bind to specific regulatory nucleotide sequences and help to turn "on or off" specific genes in the DNA.

Transcription factors can either be ACTIVATORS or REPRESSORS depending on whether they boost or inhibit gene expression. The binding sites for these regulatory proteins called TRANSCRIPTION factors are the regulatory nucleotide sequences on the DNA called enhancers and silencers.

4 0
3 years ago
some cells produce and secret high levels of digest enzymes. which organelles would you expect to be abundant in those cells and
Diano4ka-milaya [45]

Lysosomes, because they are the organelles that secrete these hydrolytic enzymes and help break down old organelles, viral/bacterial invaders, and food particles.

3 0
3 years ago
Other questions:
  • Temperature and _______ are both determining factors for a substance's phase of matter.
    11·1 answer
  • Ben wants to convert some leftover food and organic matter in his garden into an eco-friendly form. Which method can he use?
    9·1 answer
  • Conjunctivitis in a child that is accompanied by acute otitis media is treated with:
    5·1 answer
  • Processing of the mRNA begins before transcription of eukaryotic mRNA\'s is complete. The end of the mRNA is prepared for recogn
    9·1 answer
  • Natural selection could not occur without
    15·1 answer
  • Why do neurons need a steady supply of atp?
    13·1 answer
  • What are some of the key life support systems built into a space suit
    9·1 answer
  • A private reptile breeding facility near the Everglades was destroyed by Hurricane Andrew in 1992. This event contributed to the
    15·1 answer
  • Could someone please come help me
    11·2 answers
  • Compare the nutrition labels of these three options to select the healthiest choice.
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!