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2 years ago

Broooooooo help me I will give you 20 point don’t send a link tell me the answer

Biology

2 answers:

Charra [1.4K]2 years ago

8 0

For the second one the answer is that they’re married

lorasvet [3.4K]2 years ago

3 0

Answer:

III-2 is the niece of II-4, which makes II-4 the aunt of III-2

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When working with radioactive materials you must use radiation detection instruments. Which of the following instruments require

vampirchik [111]

Geiger-Muller tube is instruments requires you test three times the background of the work area.

Explanation:

These detectors are gas filled detectors and hence requires time for responding to the value. This time is taken because during this period it collects the electric charges and features of the electric circuit. It also gets stabilized during this period. This device has thumb rule i.e one must wait or hold for at the least 3 times the time constant before getting the precise and accurate reading. The time constant order is 10 seconds for the ionization chamber but for the Geiger counter it can vary from seconds to greater than 20 seconds

6 0

3 years ago

For taking bath, water at 40⁰C is required. Calculate the mass of cold water at 15⁰C which is to be added in 60 Kg water at 100⁰

MrRa [10]

Answer:

Energy added to cold water, E1

E1 = m•Cp•ΔT = 6 x 4.187x(42-20) = 6x4.187x22

Energy lost by hot water, E2:

E2 = X(CpΔT) = X x 4.187 x (75-42) =X x 4.187 x 33

So, since E1 = E2

6x4.187x22 = X x 4.187 x 33

X = 6x22/33 = 4.0kg

So the mass of the hot water added to the 6kg of cold water is 4.0kg

7 0

2 years ago

What is the scientific formula of a carrot?

Arlecino [84]

Carrot classification:

Family: Apiaceae

Genus: Daucus

Species: D. carota

Subspecies: D. c. subsp. sativus

It is made of primarily water but also gives us nutrients like beta-carotene, alpha Carotene, and phytochemicals.

4 0

3 years ago

Read 2 more answers

Can somebody give me the answer for these...

labwork [276]

Answer:

1. Life cycle of a cell starts from

G1 phase - S phase (synthesise phase) - G2 phase - mitosis.

2. By mitosis bcoz it restore nucleo cytoplasmic ratio means ploidy of cell remain same.

3. Bcoz of transformation of normal cells into cancerous cells by Carcinogens present in tobacco.,drugs .etc

4 mitosis occurs in plants animals

Binary fission occurs in bacteria and other single celled organism.

Both give rise to two daughter cells.

5.sex cells (n) are produced by meiosis from gamete mother cells(2n).

6.in meiosis ploidy of cell become half

Means diploid cell form haploid cells

And 4 haploid daughters cells are formed.

In mitosis, ploidy of cell remain same

Means haploid form haploid and diploid form diploid.

1 cell form 2 daughter cells.

Hope this helps you.. Frnd ❤️

4 0

3 years ago

You are comparing a reaction that produces a chemical change and one that produces a physical change. What evidence could you us

Zina [86]

Answer:

To understand the physical change and chemical change, one needs to know what is physical properties and what is the chemical properties of a substance.

Physical property is characteristic or trait of a substance that can be observed without converting the substance to a new substance. If there is any type of change in these physical properties like changing the appearance or form of matter and does not make a new substance, takes place it is called physical change.

A chemical change is a change in the matter of a substance that creates one or more new substances. This type of change includes the formation, color, of a precipitate, change in texture, and many other changes.

8 0

3 years ago