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
disa [49]
2 years ago
5

If you wanted to demonstrate a first class lever system to your peers which Childhood toy would you use as a basis for your demo

nstration and which body motion would you use as an example?
A. A yo-yo and handshake
B. A see-saw , chin raise
C. A swing set , a leg kick
D. A slide, a squat
Biology
1 answer:
seropon [69]2 years ago
3 0

Answer: Option B.

A see saw, chin raise.

Explanation:

A lever is a machine that can rotate and consist of a beam which is pivoted to fulcrum.

There are three classes of lever, the first class lever, second class lever and third class lever. These three classes of lever are classified base on the positions of effort, fulcrum and Load.

In first class lever, fulcrum comes between the effort and load. Examples is scissors , see saw, pliers. This is because effort is applied on the one side of the fulcrum and load is on the other side. Therefore, the childhood demonstration of first class lever motion is see saw and chin raise.

In the second class lever, load come between effort and fulcrum e.g wheelbarrow, bottle opener.

In the third class lever, effort comes between fulcrum and load e.g hammer, broom.

You might be interested in
Cycadophyta seeds are protected by __________________ .
REY [17]
Pods hope this helps.
5 0
3 years ago
Read 2 more answers
A nonrenewable resource that developed from the remains of ancient plants that lived in large swamps millions of years ago is:
uysha [10]

Answer:

★ A nonrenewable resource that developed from the remains of ancient plants that lived in large swamps millions of years ago is COAL

Explanation:

Hope you have a great day :)

6 0
3 years ago
Who is generally given institutional responsibility for deciding if an individual researcher is properly trained to perform anim
poizon [28]

Answer:Institutional Animal Care and Use Committees ( IACUC).

Explanation: it was formally introduced in 1986 with an amendment to the Animal Welfare Act and corresponding changes in U. S. public health service policy. It is the committee that investigates researcher to know if they are properly trained to perform animal procedures, as required by law.

6 0
2 years ago
In _______ a population isolated by a geographic barrier becomes a new species as it accumulates changes by natural selection or
Mashcka [7]

Answer:

The correct answer is allopatric speciation.

Explanation:

Allopatric speciation occurs when a geographical barrier comes between a species population living in the same area. This geographical barrier separates the population into two different geographical area which do not have the same condition.

So as both the separated population get different habitat environment to live so they evolve differently from each other. So natural selection and genetic drift works differently in both the population which brings genetic changes in the population and helps in creating a new species.

3 0
2 years ago
What are the benefits of sexual reproduction for plant and animal species?
Tamiku [17]
Increases genetic variation, which in and of itself has extreme benefits such as protection against disease, capability to evolve, etc
6 0
3 years ago
Other questions:
  • When you first get into the swimming pool the water feels rather cool; but after swimming for a while the water feels fine. a fr
    10·1 answer
  • Imagine that you live near a large marsh and you just heard that they are going to build a shopping development over it. ... Wri
    5·1 answer
  • If you see any type of ______ cloud, you can expect fair weather.
    15·2 answers
  • Which of the following factors can influence advances in science and technology?
    10·1 answer
  • Enter the molecular formula for butane, C4H10. Express your answer as a chemical formula.
    13·1 answer
  • How can resource availability affect interactions between organisms?<br> QUICK
    10·1 answer
  • Suppose the great, green galoofus lizard has 28 chromosomes in the nucleus of its unfertilized eggs. Predict how many chromosome
    11·1 answer
  • What causes cyclones to rotate counter-clockwise in the northern hemisphere and clockwise in the southern hemisphere?
    9·1 answer
  • PLS HELP!!!
    6·1 answer
  • Input work is always greater than output work why?<br>​
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!