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3 years ago

Explain nuclear reactions, nuclear fission and nuclear fusion.

Physics

1 answer:

SVETLANKA909090 [29]3 years ago

8 0

Answer:

Nuclear reaction is a reaction in which nucleus of the atom undergoes a change.

Nuclear fusion is a process which involves the conversion of two small nuclei to form a heavy nuclei along with release of energy.

Example : $4_1^1\textrm{H}\rightarrow _2^4\textrm{He}+2_{+1}^0\textrm{e}+\text{energy}$

Nuclear fission is a process which involves the conversion of a heavier nuclei into two or more small and stable nuclei along with the release of energy.

Example: $_{92}^{235}\textrm{U}+_0^1\textrm{n}\rightarrow _{56}^{143}Ba+_{36}^{90}Kr+3_0^1\textrm{n}$

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g A mouse is sitting on top of the block in the previous question. As a reminder, the block is sliding down a ramp at a constant

Feliz [49]

Answer:

The number of forces that are acting on the mouse will be three (Normal force, friction force and force of the mouse´s weight)

Explanation:

The number of forces that are acting on the mouse will be three. the first is the normal force acting on the midpoint of the mouse, this force is directed upward, the other is the force between the block and the bottom of the mouse, which is the friction force, and the third is the force of the mouse´s weight, which is defined as the multiplication of mass by gravity.

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3 years ago

A rock formed with 1,000 atoms of a radioactive parent element, but only contains 250 radioactive parent atoms today. If the hal

alisha [4.7K]

Answer:

age of rock is 2 million years

Explanation:

$M_{R}=\frac{M_{O} }{2^{n} }$

Where $M_{R}$ is mass remaining

$M_{R}$ is original mass

n= t/t(1/2) , which is the ratio of time to half life

$M_{O}$ = 1000atoms

$M_{R}$ =250 atoms

$250 =\frac{1000}{2^{n} }$

$2^{n} = \frac{1000}{250}\\ 2^{n} =4\\2^{n} = 2^{2}\\ n=2$

$n =\frac{t}{t\frac{1}{2} }$

t =t(1/2) *n

t(1/2) =1000000 years

t=1000000 *2

t=2,000,000 years

8 0

3 years ago

Se dispone de dos vasos con agua a 20 grados y queremos calentarlo hasta alcanzar 50 grados. Si el primero contiene 0,5l y el se

BigorU [14]

Answer:

The cup with 0.5L

Explanation:

To know what amount of water you take into account the specific heat of the water. The specific heat of water is:

$c_{water}=4186\frac{J}{kg\°C}$

Thus, 4186 J of energy are needed to icrease the temperature of 1 kg water in 1°C. Then, more grams of water will need more energy.

You have that one cup has 0.5 L and the other one has 750mL = 0.75L

The second cup of water will need more heat because the amount of water contained in the second cup is greater than in the first cup with 0.5L

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3 years ago

Can someone please help me think of an idea for this. My teacher wants me to think of a gadget that uses two simple machines, an

ohaa [14]

A dishwasher and a dryer im not sure if that is right but that’s what I would put

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3 years ago

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Suppose that a charged particle of diameter 1.00 micrometer moves with constant speed in an electric field of magnitude 1.00×105

Dovator [93]

It's a bit of a trick question, had the same one on my homework. You're given an electric field strength (1*10^5 N/C for mine), a drag force (7.25*10^-11 N) and the critical info is that it's moving with constant velocity(the particle is in equilibrium/not accelerating).
All you need is F=(K*Q1*Q2)/r^2 
Just set F=the drag force and the electric field strength is (K*Q2)/r^2, plugging those values in gives you 
(7.25*10^-11 N) = (1*10^5 N/C)*Q1 ---> Q1 = 7.25*10^-16 C

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3 years ago

Read 2 more answers