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3 years ago

Answer circled questions. It's about plate tectonics

Physics

2 answers:

Alik [6]3 years ago

5 0

A fault line?

A volcano?

Sphinxa [80]3 years ago

3 0

2. is transform fault boundary
5. volcano can form

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What’s the answer? Will give brainliest

Allushta [10]

The two nuclei are Krypton-89 and Barium- 144

Explanation:

The splitting nuclei is a Uranium-235:

mass number = 235

atomic number = 92

We can write the atom as ²³⁵₉₂U

From the key, a neutron particle collides with the Uranium nuclei. The neutron is represented as:

¹₀n

Writing the expression on the left hand side:

²³⁵₉₂U + ¹₀n

In a fission reaction, a heavy nucleus disintegrates into 2 lighter nuclei and several neutrons with the release of a large amount of energy.

NOTE: In every nuclear reaction, the mass number and atomic number is always conserved.

Problem: To find the unknown nuclei on the right hand side;

Known:

3 neutrons;

²³⁵₉₂U + ¹₀n → 3 ¹₀n + unknown nuclei

To balance the product side,

mass number = (235+1) - (3x1) = 233

Atomic number = 92 -3 = 89

from the options given, Krypton and plutonium will fit this:

Given information of Kr:

atomic number = 36

neutron number = 53

Mass number = atomic number + neutron number = 89

Given information of Ba:

atomic number = 56

neutron number = 88

mass number = 56+88 = 144

Complete equation:

²³⁵₉₂U + ¹₀n → 3 ¹₀n + ¹⁴⁴₅₆Ba + ⁸⁹₃₆Kr

Learn more:

nuclear equation brainly.com/question/10094982

#learnwithBrainly

5 0

3 years ago

What kind of reaction occurs when potassium is placed in water? a. a single-displacement reaction c. a decomposition reaction b.

satela [25.4K]

The equation for potassium in water is:
K(s) + H20(l) --> H2(g) + K20(aq)
since a element and a compound are reacting, this is a single replacement reaction - which is a)

7 0

4 years ago

A Ferris wheel has radius 5.0 m and makes one revolution every 8.0 s with uniform rotation. A person who normally weighs 670 N i

DaniilM [7]

Answer:

The apparent weight of the person as she pass the highest point is $N = 458.8 \ N$

Explanation:

From the question we are told that

The radius of the Ferris wheel is $r = 5.0 \ m$

The period of revolution is $T = 8.0 \ s$

The weight of the person is $W = 670 \ N$

Generally the speed of the wheel is mathematically represented as

$v = \frac{2 \pi r}{T }$

substituting values

$v = \frac{2 * 3.142 * 5}{8 }$

$v = 3.9 3 \ m/s$

The apparent weight (the normal force exerted on her by the bench) at the highest point is mathematically evaluated as

$N = mg - \frac{mv^2}{r}$

Where m is the mass of the person which is mathematically evaluated as

$m = \frac{W}{g}$

substituting values

$m = \frac{670}{9.8}$

$m = 68.37 \ kg$

$N = 68.37 * 9.8 - \frac{68.37 * {3.93}^2}{5}$

$N = 458.8 \ N$

5 0

3 years ago

A man pulls a sled at a constant velocity across a horizontal snow surface. if a force of 80 n is being applied to the sled rope

balandron [24]

A constant velocity implies the two forces must be equal and opposite.
Friction acts horizontal to the ground, therefore we must find the force applied to the sled rope that acts horizontal to the ground.
Do this by resolving:
Force = 80cos53
The force opposing this is equal, and so also = 80cos53 = 48 N (2 sig. fig.)

3 0

4 years ago

Read 2 more answers

4. A force of 5 N gives a mass m,, an acceleration of 10 m's, and a mass

Art [367]

Answer:

For mass m 1 newton 2nd law

F=m 1 a 1

5=m 1 ×10

m 1 = 2 1 kg

For mass m 2

F=m 2 a 2

5=m 2 ×20

m 2 = 4 1 kg

if tied together

Total mass =m 1 +m 2 = 1/2 +1/4=3/4kg

Now

F=M T Q T

a T = 5/m T = 5×4/3 = 3 /20m/s^2

Explanation:

8 0

3 years ago