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3 years ago

9

ID like to say thx everyone who is on brainly u guys helped me get through my quiz so thx

2 answers:

VARVARA [1.3K]3 years ago

8 0

Answer:

I want to know how your experience has been on brainly. I hope it is good. I really like spending time helping others here. If you have any other questions please ask me :)

Explanation:

Gnesinka [82]3 years ago

5 0

Answer:

u welcome

Explanation:

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What's the meaning of quantum entanglement?

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the phenomenon whereby a pair of particles are generated in such a way that the individual quantum states of each are indefinite until measured, and the act of measuring one determines the result of measuring the other, even when at a distance from each other.

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2 years ago

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To get an accurate data reading, scientists must be sure to

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4 years ago

A body of mass 250g is release from the top of a building. if the body hits the ground with a velocity of 4m/s, calculate th hei

Nutka1998 [239]

$\purple{\maltese}\large\underline{\underline{\sf\:\: Given :}} \\$

» Mass ( m ) of the body = 250 g

» final velocity of the body = 4 m/s

$\\\purple{\maltese}\large\underline{\underline{\sf\:\: To \: \: Find :}} \\$

» The height of the Building= ??

$\\\purple{\maltese}\large\underline{\underline{\sf\:\: Solution :}} \\ \\$

★ <u>Height of the </u><u>building </u><u>by the principal of conservatio</u>n;

$\\\\\begin{gathered}\purple{\maltese}\large\underline{\underline{\sf\:\: using \: formula :}} \\ \\\end{gathered}$

$\bigstar \: \underline{ \boxed{\sf { \pink{ \: \frac{1}{2} \: \: mv { }^{2} = \: mgh \: }}}}$

$\\ \: \: \underline{\textsf {Putting values \: in \: the \: \: given \: formula :}} \\$

$\\ \sf \implies \: \frac{1}{2} \: \: mv { }^{2} = \: mgh \: \\$

$\\ \sf \implies \: \frac{v {}^{2} }{2} \: \: = \: gh \: \\$

$\\ \sf \implies \: h \: = \frac{v {}^{2} }{2g} \: \: \: \\$

$\\ \sf \implies \: h \: = \frac{16 }{20} \: \: \: \\$

$\\ \sf \implies \: h \: = 0.8 \: \: \: m \\$

$\\ \sf \implies \: h \: = 80 \: \: \: cm \\$

henceforth , The height of the Building is <u>0.8 m or 80 cm</u> ..!!!

5 0

2 years ago

A book is on the table. If the weight of the book is 25 newtons, what is the magnitude and direction of the normal force?

Andrej [43]

I'm not sure about the magnitude, but the direction of the normal force is upward.

4 0

3 years ago

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A 25kg mass is suspended at the end of a horizontal, massless rope that extends from a wall on the left and from the end of a se

patriot [66]

<h2>Answer:20.97g N,32.63g N</h2>

Explanation:

We consider the forces at the knot.

The vertical forces are

$T_{2}Sin(50^{0}})$ is the vertical component of tension $T_{2}$ at the knot.

$-25g$ is the weight of the mass $25Kg$ acting downwards.

The horizontal forces are

$-T_{1}$ is the tension in the rope acting left.

$T_{2}Cos(50^{0})$ is the horizontal component of tension $T_{2}$ acting towards right.

Since the knot has no mass,it is always in equilibrium.

So,the sum of forces acting on it will be zero.

Balancing vertical forces gives,

$T_{2}Sin(50^{0}})$ $-25g=0$

$T_{2}$ = $32.63gN$

Balancing horizontal forces gives,

$T_{2}Cos(50^{0})$ $-T_{1}=0$

$T_{1}=32.63g\times Cos(50^{0})=20.97gN$

7 0

3 years ago

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