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
Lerok [7]
2 years ago
14

HELP PLEASE ASAP. A runner travels 400 meters in 80 seconds, what is the runner’s average speed?

Biology
1 answer:
RideAnS [48]2 years ago
3 0

Answer:

v = 5 m/s

Explanation:

Given that,

The distance covered by a runner, d = 400 m

Time, t = 80 sec

We need to find the runner's average speed. It is equal to total distance covered divided by time taken. It can be given by:

v=\dfrac{d}{t}\\\\v=\dfrac{400\ m}{80\ s}\\\\v=5\ m/s

So, the runner’s average speed is 5 m/s.

You might be interested in
Which statement describes rutherford’s model of the atom? select three options.
Svetllana [295]

Answer:

A. The atom is mostly empty space.

B. Electron orbit around the center of the atom.

C. The atom's positive charge is located in the atom's nucleus.

Explanation:

Rutherford is a chemist which performnan experiment in order to see what is present inside the atom. He bombarded radiation from a source on an atom. He observed that most of the radiation pass through the atom so he concluded that the atom has mostly empty while some comes back which means that a heavy particles are present in the nucleus.

3 0
2 years ago
The client with vaginal itching and burning has been scheduled for an examination and pap procedure. which teaching regarding do
vovikov84 [41]
Discontinue douching
5 0
3 years ago
The diagram below illustrates a biochemical process that occurs in organisms. The active site is represented by letter____, whil
tester [92]

The diagram below illustrates a biochemical process that occurs in organisms. The active site is represented by the letter <u>B</u>, while the products are represented by the letter <u>E</u>. so the correct option is - C. B and E

In this diagram, there is a biochemical reaction is shown which is catalyzed by the enzyme.

  • Enzymes are biological catalysts that are proteins in nature that help speed up biochemical reactions such as metabolic reactions in organisms.
  • Enzymes bind to substrate molecules with the help of the active site.
  • The active site of enzymes is like specific grooves or sites where substrate molecules bind and form an enzyme-substrate complex in the reaction.
  • Active sites alter the substrate molecules and form product molecules at the end of the reaction.

Thus, the correct option is - C. B and E.

Learn more about enzymes:

brainly.com/question/21248499

5 0
2 years ago
ANSWER PLEASE
Elina [12.6K]
What do you think the answer is i came yup with D
8 0
3 years ago
Read 2 more answers
Fill in the below mention blanks with immunity. Immunity types may be used more than once, but each sentence has only one correc
sp2606 [1]

Answer:

to. 1. Cell-mediated immunity Cytotoxic T lymphocytes attack and destroy foreign cells and viruses Antibody-mediated immunity

b.1. Cell-mediated immunity T cells mature in the thymus before they circulate. Immune.

C. 1. Cell-mediated immunity B cells differentiate into plasma cells.

re. 2. Antibody-mediated immunity Antibodies adhere to specific targets.

me. 1. Cell-mediated immunity B cells mature in the red bone marrow before they circulate the antigen.

f.1. Cell-mediated immunity Memory T cells are subsequently activated by the same 6 antigens.

g.3. Immune surveillance NK cells monitor peripheral tissues for cancer and abnormal cells.

Explanation:

Cellular immunity is mediated by the cells of the immune defense, it presents different times, in the first time the PMN appear, in the second time the antigen presenting cells, and lastly the lymphocyte lineage.

Antigen presenting cells have the ability to phagocytose and express antigen on their surface to facilitate the formation of antibodies.

Surveillance immunity refers to the lymphocytes that are responsible for monitoring or controlling cell mutations or uncontrolled growth due to genetic mutations.

Neoplastic cells express histocompatibility complexes on their surface that make them recognized by these lymphocytes and this is how they are responsible for inducing self-destruction or phagocytosis of the neoplastic cell.

Humoral immunity refers to the chemical substances that function as mediators of cell activity, these are: pro and anti-inflammatory cytokines, complement chain, nitric and nitrous acid, oxygen free radicals, interleukins, growth factors and tumor necrotic factor alpha - beta

5 0
3 years ago
Other questions:
  • How do plants transfer energy from light to sugar molecules?
    9·2 answers
  • In a science experiment, equal-sized populations of two species of earthworms are placed in a terrarium filled with soil. Abioti
    5·1 answer
  • Why is charles darwin's book on the origin of species (1859) considered an important contribution to modern science?
    15·1 answer
  • Bacteria containing recombinant plasmids are often identified by which process?A) examining the cells with an electron microscop
    5·1 answer
  • Protective
    6·1 answer
  • If the Universe was born at the Big Bang, what existed before then
    7·2 answers
  • Which could most likely have a lasting negative impact on the biodiversity of an area?
    9·1 answer
  • How would you describe an allele that be expressed and determines an organisms appearance?
    13·1 answer
  • How long does ur nose hurt when u hit ur nose hardly on a glass wall?<br> This is on my worksheet...
    5·2 answers
  • Pls help with the highlighted just send me a pic on safari or something.
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!