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3 years ago

1. first nuclear reactor

2 answers:

7 0

The correct matches are as follows:

1. first nuclear reactor
Fermi - an italian physicist who made the first nuclear reactor
2. 1/0 η
atomic mass 
3. decaying nuclei
fission - nuclear reaction from a heavy elements to lighter elements
4. number of neutrons and protons
neutron 
5. builds heavier elements
fusion - nuclear reaction from two or more elements to a heavier element
6. discovered radioactivity
Curie
7. unit of radiation
 Becquerel

umka2103 [35]3 years ago

5 0

Answer:

atomic mass: 4.

fusion: 5

fission: 3

curie: 7

Becquerel:6

Fermi: 1

neutron: 2

Explanation:

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If you want to make a strong battery, should you pair two metals with high electron affinities, low electron affinities, or a mi

zalisa [80]

A mix

Explanation:

A battery is an electrochemical cell that converts chemical energy into electrical energy. The chemical reactions in a battery ensures that current is produced.

A battery is made up of two electrodes which are the cathode and anode.
The cathode is the positive electrode and the anode is the negative one.
These electrodes are made up of metals.
Electrons moves from the anode to the cathode and current flows from cathode to anode.
At the anode oxidation occurs because electrons are produced here.
It needs to have low electron affinity.
At the cathode where reduction occurs, the electron affinity must be high.
This is the driving force for the production of electricity in electrochemical cells.

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Battery brainly.com/question/8892837

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2 years ago

ANSWER FOR BRAINLEST AND 25 POINTS what is the word for this definition

rusak2 [61]

The calorie was originally defined as the amount of heat required at a pressure of 1 standard atmosphere to raise the temperature of 1 gram of water 1° Celsius. ... Since 1925 this calorie has been defined in terms of the joule, the definition since 1948 being that one calorie is equal to approximately 4.2 joules.

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3 years ago

What is density what is density

kirill [66]

Answer:

The density of a substance is the relationship between the mass of the substance and how much space it takes up

Explanation:

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7 0

2 years ago

Read 2 more answers

A doubly ionized molecule (i.e., a molecule lacking two electrons) moving in a magnetic field experiences a magnetic force of 6.

Paul [167]

Answer:

The magnitude of the magnetic field is 10.19 T.

Explanation:

Given that,

Charge on the doubly charged molecule, q = 2e

Magnetic force, $F=6.75\times 10^{-16}\ N$

Speed of molecule, v = 207 m/s

The angle to the direction of the field is 74.9 degrees.

We need to find the magnitude of magnetic field. The formula of magnetic force is given by :

$F=qvB$

B is magnetic field

$B=\dfrac{F}{qv}\\\\B=\dfrac{6.75\times 10^{-16}}{2\times 1.6\times 10^{-19}\times 207}\\\\B=10.19\ T$

So, the magnitude of the magnetic field is 10.19 T.

7 0

3 years ago

Two long parallel wires carry currents of 3.05 A 3.05 A and 6.69 A 6.69 A . The magnitude of the force per unit length acting on

ziro4ka [17]

Answer:

The separation between wires is 55.6 mm.

Explanation:

Given that,

Current in wire 1, $I_1=3.05\ A$

Current in wire 2, $I_2=6.69\ A$

The magnitude of the force per unit length acting on each wire is, $\dfrac{F}{l}=7.33\times 10^{-5}\ N/m$

We know that the formula of magnitude of the force per unit length is given by :

$\dfrac{F}{l}=\dfrac{\mu_oI_1I_2}{2\pi d}$

Here, d is the separation between wires.

$d=\dfrac{\mu_o I_1I_2}{2\pi (F/l)}\\\\d=\dfrac{4\pi \times 10^{-7}\times 3.05\times 6.69}{2\pi \times 7.33\times 10^{-5}}\\\\d=0.0556\ m\\\\d=55.6\ mm$

So, the separation between wires is 55.6 mm.

7 0

3 years ago