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3 years ago

What discovery demonstrated that atom's are mostly empty space?

Biology

1 answer:

inna [77]3 years ago

3 0

Answer:

Rutherford's gold foil experiment

Explanation:

Hope this helps.

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Pls help I’m literally so confused

Nataly_w [17]

Answer:

IT IS D

Explanation:

i did this and it was d

6 0

3 years ago

Read 2 more answers

When a living organism dies, it stops taking in new carbon. Thus, as the radioactive carbon-14 decays, the ratio of carbon-12 to

Alexxandr [17]

Answer: The fossil is 11459 years old.

Explanation:

Half-life of carbon-14 = 5700 years

First we have to calculate the rate constant, we use the formula :

$k=\frac{0.693}{5700\text{years}}$

$k=1.21\times 10^{-4}\text{years}^{-1}$

Now we have to calculate the age of the sample:

Expression for rate law for first order kinetics is given by:

$t=\frac{2.303}{k}\log\frac{a}{a-x}$

where,

k = rate constant = $1.21\times 10^{-4}\text{years}^{-1}
t = age of sample = ?
a = let initial amount of the reactant = 100 g
x = amount decayed = 75 g
a - x = amount left after decay process = 100 - 75 = 25 g Now put all the given values in above equation, we get
[tex]t==\frac{2.303}{1.21\times 10^{-4}}\log\frac{100}{25}$

$t=11459years$

The fossil is 11459 years old.

4 0

3 years ago

Epithelial tissue can be found in the lining of the internal organs. Certain types of epithelial tissue are only one cell thick.

trasher [3.6K]

Answer:B

Explanation:

7 0

3 years ago

As we know three most common house hold fuse value sare 3A,5A and 13A.

Reptile [31]

The list of household electrical appliances categorized according to their power consumption and what fuse they will use are:

A table lamp,
Computer
Blender,
Refrigerator
Deep freezer etc.

For every appliance that is rated between 700 and 3000 watts, it's plug should have a 13-amp fuse installed onto it.

<h3>What is a fuse value?</h3>

A fuse rating is the amount of current required to blow (break) the fuse. When a fuse blows, it disconnects power from an electrical system.

The fuse rating is generally printed on the fuse itself. The fuse rating is often expressed in 'amps,' which is the standard measurement for electrical current.

<h3>Why are electrical fuses important?</h3>

If an appliance malfunction results in an excessive current flow, the fuse shuts off the circuit.

If something goes wrong, this safeguards both the wiring and the appliance. A wire that melts easily is within the fuse.

Learn more about fuse values at;

brainly.com/question/23959921

#SPJ1

Full Question:

As we know that the three most common household fuse values are 3A, 5A, and 13A.

Make a list of your household electrical appliances. Divide them into three groups according to their power consumption to decide what fuse should be fitted in the plug for each of them.

6 0

2 years ago

Which of the following structures is NOT a part of the respiratory system?

ValentinkaMS [17]

Answer:

Uvula.

Explanation:

Respiration may be defined as the process of exchange of gases between the body tissue, lungs and the environment. Oxygen is inhaled and carbon dioxide is exhaled out during the process of respiration.

The choanae, external nares, epiglottis and mouth plays an important role in respiration. Uvula is mainly involved in the production of the salivary gland. The uvula moistens the area and also involved in the speech process. Hence, uvula do not play important role in respiration.

Thus, the correct answer is option (b).

8 0

3 years ago