Answer and I will give you brainiliest




Please I need a surely answer ​

Answer:

1➡️ this is the method of decomposition

2➡️ H2 and O2

3➡️ b

sorry if I am wrong

Answer:

36.3m/s

Explanation:

We are given that

Mass of block, m=13 kg

Mass of glob,m'=400g=0.4 kg

1 kg=1000g

Total mass, M=13+0.4=13.4 kg

Distance, s=15 cm=0.15m

1m=100cm

Coefficient of sliding friction, [tex]\mu=0.4[/tex]

We have to find the initial speed of the putty.

Friction force, f=[tex]\mu Mg=0.4\times 13.4\times 9.8[/tex]N

Where [tex]g=9.8m/s^2[/tex]

Work done=[tex]Fs[/tex]

Work done=[tex]0.4\times 13.4\times 9.8\times 0.15[/tex]

Work done=7.8792 J

Work done =K.E=[tex]1/2 MV^2[/tex]

[tex]7.8792=\frac{1}{2}(13.4)V^2[/tex]

[tex]V^2=7.8792\times 2/13.4=1.176[/tex]

[tex]V=1.0844m/s[/tex]

Using conservation of linear momentum

[tex]mu+ m'v=MV[/tex]

[tex]13(0)+0.4v=13.4(1.0844)[/tex]

[tex]0.4v=14.53[/tex]

[tex]v=\frac{14.53}{0.4}[/tex]

[tex]v=36.3m/s[/tex]

Hence, the initial speed of the putty=36.3m/s

20 push ups

hope thats correct^^

Answer:

Is the vector is(mathematics) a directed quantity, one with both magnitude and direction, the (soplink) between two points while velocity is (physics) a vector quant that denotes the rate of change of position with respect to time or a speed with the directional component.

Answer:

C

Explanation:

Because an object that is in motion stays in motion unless acted on by an intrivatal force

Visible light waves do not diffract as well as radio waves because the wavelength of the light waves are too small.

This is defined as the distance between corresponding points of two consecutive waves.

Light waves have a small wavelength which is why it doesn't diffract as well as radio waves thereby making option C the most appropriate choice.

Read more about Wavelength here https://brainly.com/question/10728818

Answer:

Conduction

Explanation:

Conduction is when heat or electricity is transmitted throughout a substance.

The energy transfer taking place through our body is called conduction. Our body is conductive and which make the electrical shock.

There are three different modes of energy transfer namely, conduction, convection and radiation. Conduction is the energy transfer mode on solids and convection is taking place in gases and liquids.

Radiation is the energy transfer mode through vacuum. In conduction the energy transfers easily through the chain of  closely packed molecules. Whereas in convection, the molecule which obtained an energy travels across the space and transfers to other molecules.

Our body transfers energy inside through conduction process. Skin is very conductive and the electrons from the wire can be passed through our body that's why we gets electrically shocked.

To find more on conduction, refer here:

https://brainly.com/question/12136944

#SPJ2

Answer:

I think its the electromagnetic spectrum

Answer:

Δλ = 3*10⁻³ m.

Explanation:

       [tex]v = \lambda* f (1)[/tex]

       where v is the speed, λ is the wavelength and f is the frequency.

       [tex]\lambda = \frac{v}{f} (2)[/tex]

        [tex]\lambda_{1} =\frac{v}{f_{1}} = \frac{343m/s}{440(1/s)} = 0.779 m (3)[/tex]

        [tex]\lambda_{2} =\frac{v}{f_{2}} = \frac{343m/s}{442(1/s)} = 0.776 m (4)[/tex]

       [tex]\Delta \lambda = \lambda_{1} - \lambda_{2} = 0.779 m - 0.776m = 3e-3 m (5)[/tex]

       ⇒ Δλ = 3*10⁻³ m.

Answer:

he pattern is circular because the leaves have rounded spaces that when added at a great distance give a circular shape in far-field diffraction or Fraunhofer

Explanation:

When the sunlight reaches the trees it suffers a diffraction phenomenon if the leaves are close together,

This diffraction spectrum when we see it near the leaves has the shape of the edge of each leaf this diffraction is of the near field type, when we move away from the leaves the different patterns add up, resulting in a far field diffraction, this diffraction it has a characteristic shape, regardless of the details of the initial shapes.

In general, if the initial shapes are slits, the pattern is of the lines type, but if the pattern has circular or rounded characteristics, the resulting pattern is circles of different sizes depending on the space between the initial openings.

Consequently the pattern is circular because the leaves have rounded spaces that when added at a great distance give a circular shape in far-field diffraction or Fraunhofer

Answer:

Yep

Explanation:

Answer:

0.1m/s²

Explanation:

acceleration =(final velocity - initial velocity)÷time taken

acc=(2-0)÷20

av. acc=0.1m/s²

Answer:

smallest area of the heel is 0.000168  m^2

Explanation:

Recall that pressure is defined as: Force / area. Therefore to reach a pressure of 3,500,000 Pa using a force: m * g = 60 kg * 9,8 m/s^2 = 588 N, one needs:

Area = 588 / 3500000 m^2 = 0.000168  m^2

Answer: 9/10

Explanation:

because it's really important and makes you energetic

Answer: that guy

Explanation:

Answer:

interna

Explanation:

please mark as brainllest

Answer:

22.5 hp

Explanation:

The power delivered to an object is given by :

[tex]P=F\times v[/tex]

Where

F is force and v is velocity of the car.

For the same force, power is directly proportional to the velocity.

So,

[tex]\dfrac{P_1}{P_2}=\dfrac{v_1}{v_2}\\\\P_2=\dfrac{P_1v_2}{v_1}\\\\P_2=\dfrac{15\times 30}{20}\\\\P_2=22.5\ hp[/tex]

So, the new power is 22.5 hp.

Option 3) a Soccer Ball

will travel the farthest distance.

Answer:

a bowling ball

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Answer:

D

Explanation:

Newtons first law states that if an object is at rest it will stay at rest only if an unbalanced force acts on it. As well as if an object is in motion it will stay in motion unless an unbalanced force acts on it.

Ps- The object will stay moving in the same speed and direction.

Answer:

D

Explanation:

I just know

Answer:

I think it's A, I'm not sure though

Answer:

x = 1162.5 W/m²

Explanation:

Since, the power decrease is proportional to the depth of the beam. Therefore, interpolation can be used to find the intensity of power at a depth of 1.25 m. First we calculate the slope from know points:

[tex]Slope = \frac{\Delta y}{\Delta x} \\\\Slope = \frac{(1500 - 3000)\ W/m^{2}}{(2 - 0)\ m} \\\\Slope = -750\ W/m[/tex]

Now, we can find the unknown value by using this slope:

[tex]Slope = -750\ W/m = \frac{(600 - x)\ W/m^{2}}{(2 - 1.25)\ m}\\\\(-750\ W/m)(0.75\ m) = (600 - x)\ W/m^{2}\\x = 600\ W/m^{2} + 562.5\ W/m^{2}\\[/tex]

x = 1162.5 W/m² (Power intensity at depth of 1.25 m)

Explanation:

temperature o temperatura

Answer:

I think the answer is c electrical, and light , sound hewt

Answer:

60V

Explanation: . V = IR = 1

30*2=60

Answer: IT IS C TRUST ME DID IT

Explanation: OK BYE GOOD LUCK

Explanation:

K.E =1/2 mv^2

=1/2(156789)(45.6)^2

=78,394.5 × 2,079.36

=163,010,387.52 kg m/s

This should be your answer.

Answer:

Explanation:

Given parameters:

Voltage  = 12V

Quantity of charge  = 4C

Unknown:

Potential energy  = ?

Solution:

Within this circuit, the value of the potential energy can be found using the expression below:

   Potential energy  = [tex]\frac{1}{2}[/tex] c v²  

c is the quantity of charge

v is the voltage

 Potential energy   =  [tex]\frac{1}{2}[/tex] x 4 x 12²  = 288J

Answer:

I have no clue I'm really really really really really but like really sorry this is so hard

Answer:

26500 W/m²

Explanation:

Given that:

The diameter of the dish d = 1.2 m

Assuming the Solar power P capture by the dish = 1300 W

The surface area of the pot is calculated by using the formula:

[tex]= \pi r^2[/tex]

[tex]\pi \dfrac{d^2}{4}[/tex]

where; the diameter = 25 cm

Area = [tex]\pi \dfrac{d^2}{4}[/tex]

Area = [tex]\pi \dfrac{0.25^2}{4}[/tex]

Area = 0.049 m²

The intensity is calculated by using the formula

I = power/area

I = 1300/0.049

I = 26530.6 W/m²

I ≅ 26500 W/m²