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3 years ago

What is kinematics ???need a legendary answer -,-" xD

Physics

2 answers:

Mars2501 [29]3 years ago

8 0

Answer:

Hey, I am your !legendary! answerer.

Kinematics is a branch of physics that stems from newtons laws, it is concerned with motion acceleration velocity, etc. 1 of the foundations is newtons first law "Objects at rest will remain at rest, and those in motion will remain in motion unless acted upon".

If you have any questions i DEMAND that you ask in the coments!

Wbob1314

Alenkasestr [34]3 years ago

7 0

Explanation:

the features or properties of motion in an object

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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

A 9.76-m ladder with a mass of 22.6 kg lies flat on the ground. A painter grabs the top end of the ladder and pulls straight upw

galben [10]

Answer:

Part a)

$\tau_{net} = 1397.1 Nm$

Part b)

$I = 702.06 kg m^2$

Explanation:

Part a)

Torque on the rod is due to two forces

(i) Due to weight of the rod at mid point

(ii) Due to external force applied at the end

Now we have

$\tau_{net} = FL - mg\frac{L}{2}$

$\tau_{net} = 254(9.76) - (22.6)(9.81)(\frac{9.76}{2})$

$\tau_{net} = 1397.1 Nm$

Part b)

As per Newton's law we know that

$\tau = I\alpha$

now we have

$1397.1 Nm = I(1.99 rad/s^2)$

$I = 702.06 kg m^2$

6 0

3 years ago

An capacitor consists of two large parallel plates of area A separated by a very small distance d. This capacitor is connected t

scoundrel [369]

Answer:

Will be doubled.

Explanation:

For a capacitor of parallel plates of area A, separated by a distance d, such that the charges in the plates are Q and -Q, the capacitance is written as:

$C = \frac{Q}{V} = e_0\frac{A}{d}$

where e₀ is a constant, the electric permittivity.

Now we can isolate V, the potential difference between the plates as:

$V = \frac{Q}{e_0} *\frac{d}{A}$

Now, notice that the separation between the plates is in the numerator.

Thus, if we double the distance we will get a new potential difference V', such that:

$V' = \frac{Q}{e_0} *\frac{2d}{A} = 2*( \frac{Q}{e_0} *\frac{d}{A}) = 2*V\\V' = 2*V$

So, if we double the distance between the plates, the potential difference will also be doubled.

6 0

3 years ago

A car speedometer that is supposed to read the linear speed of the car uses a device that actually measures the angular speed of

nikklg [1K]

When a car rounds a corner at a constant speed, its acceleration is zero. Suppose you are in a car that is going around a curve. The speedometer reads a constant 30 miles per hour. ... Describe the speed of the object from 4-6 seconds using the distance vs. time graph.

4 0

3 years ago

If an object is placed between a convex lens and its focal point, which type of image will be produced?

Delvig [45]

Answer:

Explanation:

Beacuse it has 2 angles

5 0

3 years ago

Read 2 more answers

What is kinematics ???need a legendary answer -,-" xD ​

What is kinematics ???need a legendary answer -,-" xD