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3 years ago

Before the fission process takes place, lead-207 is bombarded with neutrons, it can change into

Physics

2 answers:

Oduvanchick [21]3 years ago

8 0

Lead-207 can change into Lead-208.

When Lead-207 is bombarded with neutrons, the atom acquires the neutron. Adding a neutron only changes the mass number of the atom. This does not involve change in the identity of the atom. So, Lead-207 can change into Lead-208 without change in its chemical properties.

Svetach [21]3 years ago

6 0

Lead-208, because I guessed and that was the answer.

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A or an ___ bond that allows metals to conduct electricity

kirill [66]

Answer: Metallic bond

Metallic bond can be defined as a force of attraction that exit between a metal atoms and the velency eletron. Also, this bond arise from the electostatic force of attraction that between conduction electrons and positively charged metal ions. Thus, the electron usually act as a glue by giving the substance a definite structure.

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3 years ago

A conducting rod is moving through a magnetic field, as in the drawing. The magnetic field strength is 0.65 T, and the speed of

Contact [7]

Explanation:

The given data is as follows.

Magnetic field strength (B) = 0.65 T

Speed (v) = 2.3 m/s

Induced emf (E) = ?

Formula for emf induced at the ends of the rod of length L which is moving with a speed of v is as follows.

E = BvL

Putting the given values into the formula as follows.

$E_{1} = BvL$

= $0.65 T \times 2.3 m/s \times L$

= 1.495 L .............. (1)

When magnetic field is changed to $B_{2}$ = 0.48 T

Now, we assume that the speed be $v_{2}$ to get the emf $E_{2} = E_{1}$ .

Then, $0.48 T \times v_{2} \times L = 0.65 T \times 2.3 m/s \times L$

$v_{2}$ = 3.11 m/s

Therefore, we can conclude that the speed v of the rod be adjusted to reestablish the emf induced between the ends of the rod at its initial value is 3.11 m/s.

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3 years ago

I HAVE NOOOO IDEA!!!!!!!!!! HELP!!!!!!!!!!

lawyer [7]

Answer:

Explanation:

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2 years ago

Why is it necessary to centrifuge out any precipitate formed in the unknown solution and continue testing the remaining unknown

jonny [76]

Answer:

Precipitation is the formation of a solid from a solution. It is necessary to centrifuge the precipitate to exert sufficient forces of gravity to bring the solid particles in the solution to come together and settle

Explanation:

When you centrifuge precipitate it enables the nucleation to form.

Centrifuging the precipitate helps in determining whether a certain element is present in a solution or not.

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3 years ago

A fly sits on a potter's wheel 0.30 m from its axle. The wheel's rotational speed decreases from 4.0 rad/s to 2.0 rad/s in 5.0 s

Likurg_2 [28]

Answer: The wheel's average rotational acceleration is -0.4 radians per second squared (rad/s^2)

Explanation: Please see the attachments below

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3 years ago

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