energy flow diagram of petrol driven lawnmower​

Answer:

E. Both are mechanical waves

Answer:

a) interior,  b) inside,   c) minor

Explanation:

In this exercise you are asked to select the correct words so that the statements have been correct

Electric charges always repel each other when they are of the same sign, in conductors this has the consequence that charges accumulate on the surface and the interior remains without electric charges.  with this we analyze the statements

a) interior

b) inside

c) minor

therefore the phrase would be:

(a) The net charge is always zero ---INTERIOR--- the surface of an isolated conductor.

(b) The electric field is always zero ---INSIDE--- a perfect conductor.

(c) The charge density on the surface of an isolated, charged conductor is highest where the surface is ---MINOR---to)

Answer:

Neutrons and protons are located in the nucleus of the atom.

Explanation:

And electrons are in the electron cloud.

Answer:

Explanation:

From the given information;

If we assume that charge 1 is located at the origin;

Then, using the visual overview for identification, we will realize that the known quantities are:

[tex]\mathbf{= q_1, \ q_2 , \ q_3, \ x_1 \ and \ x_2}[/tex]

However, provided that we do not know the exact location of [tex]x_3[/tex],

Then, the unknown quantity is [tex]\mathbf{ x_3}[/tex]

Answer:

I don't have friendly brother

Explanation:

So no matter if I write he is gonna throw it out

Answer:

I think it's 8 hours

Explanation:

1 meter: 1 hour

8 meters : 8 hours

Answer:

When you release the opening of the balloon, gas quickly escapes to equalize the pressure inside with the air pressure outside of the balloon. The escaping air exerts a force on the balloon itself. ... That opposing force—called thrust, in this case—propels the rocket forward.

Answer:because the circuit will be fully complete

Explanation:

Answer:

12m/s

Explanation:

x = (21 + 22t – 6 t2) m,

We can express change bin velocity as

dx/dt= -12t + 22

But Velocity is changing

interval t = 1 s

t = 4 s

at t = 1, x = 21 + 22(1) -6(1)^2

=37

at t = 4, x = 21 + 22(4) -6(4)^2

=13

Distance travelled at interval t = 1 s

t = 4 s

X2 - X1=13- 37. = - 24m

Velocity= displacement/ time

= 24/(3-1)=12 m/s

Answer:

There are four types of compounds, depending on how the constituent atoms are held together: molecules held together by covalent bonds. ionic compounds held together by ionic bonds. intermetallic compounds held together by metallic bonds.

Explanation:

Answer:

ummmmm mmmmm butterflies :)

Explanation:

Answer:

It is a great stretch for athletes who play field or court sports, runners, and anyone who has tight hips or a history of groin injuries.

Its a great flexibility exercise

Explanation:

Hope that helps

Answer:

3.33m/s

Explanation:

Given parameters:

M1  = 1000kg

V 1 = 10m/s

M2  = 2000kg

V2  = 0m/s

Unknown:

Final velocity of the two combined vehicles = ?

Solution:

This is a typical example of an inelastic collision.

 Here, it is pertinent that momentum must be conserved;

So;

       M1 V1 + M2 V2  = V (M1 + M2)

      1000 x 10  +  2000 x 0  = V (1000 + 2000)

                 10000 = 3000V

                     V  = 3.33m/s

Answer:

1: Elements are substances that cannot be broken down into more substances.

2: Compounds are a group of elements in a specific ratio.

3: A metalloid is between a metal and a non-metal.

4: A physical property is a property you can see or touch.

5: A chemical property is a property seen in chemical reactions.

6: Alloys are the combination of two or more metals to make a better material.

7: An insulator doesn't let heat and sound escape.

8: Corrosion is when a metal reacts to oxygen, water, or sulfur.

9: Rust is when a metal is exposed to oxygen

Explanation:

Answer:

it should be C I have has this question before

Answer: Gravitational potential energy = mgh

m=mass of the body

g= acceleration due to gravity

h=height

P.E=4*8*10=320

P.E=320J

Explanation:

Answer:

The answer is below

Explanation:

Newton's law of gravity states that the force between two bodies is directly proportional to the product of their masses and inversely proportional to the square of the distance between them. The law is expressed by the formula:

[tex]F=G\frac{m_1m_2}{r^2} \\\\Where\ F=force,G=gravitational\ constant, m_1\ and\ m_1=mass\ of\ objects,r\ =distance\ between \ the\ two\ objects.[/tex]

The masses and distances for this question is in common units, Therefore the result would be in ratios

a) 4 MEarth / 2 MSolar / 3 AU

The force (F) = (4 * 3) / 3² = 4/3

b) 1 MEarth / 1 MSolar / 1 AU

The force (F) = (1 * 1) / 1² = 1

c) 1 MEarth / 2 MSolar / 2 AU

The force (F) = (1 * 2) / 2² = 1/2

Answer:

the correct answer is B

Explanation:

Mechanical waves need a material medium that supports them for their transmission, sound is a material wave that is transmitted by the longitudinal vibrations of material media, one of the media through which sound is transmitted is air, but if it is in contact with other media, water, wood, metal, etc., it can also be transmitted by these means.

In this experiment for case X, sound is transmitted through the floor, but since there is no air, it cannot be transmitted

In experiment Y, sound is transmitted through the floor and through the air, therefore, having two transmission media, the energy captured by the sensor must be greater in this experiment.

when examining the answers the correct one is B

Answer:

orange line

Explanation:

it is the only straight line that makes sense. curved lines imply velocity changed. and the completly flat green line implies the vehicle didn't move since its position value stayed the same. must be the downward pointing orange line

Answer:

The moon revolves around Earth because Earth is larger than the moon, so it is heavier, and has a greater gravitational pull. The plane of the moon's orbit is very close to the plane of Earth's orbit around the Sun. This is why planets revolve around the Sun, because it is larger, so therefore it has a greater gravitational pull.

Answer:

201.06m/s

Explanation:

The solve this problem, we must understand that momentum must be conserved.

This implies that the starting momentum must be the same as the ending momentum. Since we are dealing with an inelastic collision:

      Momentum of Plane  + Momentum of truck  = Momentum of plane + truck

    Mp x Vp  +  Mt x Vt  = V(Mp + Mt)

M is the mass                            

V is the velocity

t is truck

p is the plane

     (540000 x 210) + (24000 x 0)  = V (540000+24000)

            113400000 = 564000V

                  V  = 201.06m/s

Answer:

1. evidence log

2. chain of custody

Explanation:

plato

Evidence log and chain of custody are two documents must he attach to every item of evidence.

A chain of custody log is used to demonstrate that the integrity of the evidence was upheld from the time it was seized until it was produced in court. Chain of custody logs provides information on the collection, examination, and preservation of data for production.

Evidence logs keep track of the operations carried out when Event Data was being created. Together with the Evidence Records, they should be read. Evidence logs are compiled every day and consist of a series of entries, each of which describes a specific action.

Therefore, he should attach an evidence log and chain of custody to every item of evidence.

Learn more about the evidence log, here:

https://brainly.com/question/30428409

#SPJ2

Answer:

the net charge in the shell is 3.7699 × 10⁻⁸ C or 3.7699 × 10⁻² μC

Explanation:

Given that;

Inner radius r = 4.0 cm = 0.04 m

Outer radius R = 6.0 cm = 0.06 m

b = 3.0μC/m² = 3.0 × 10⁻⁶ C/m²

we know that volume density = b/r

Now consider spherical shell inside the given shell with radius r and with of dr

the volume of the spherical shell will be;

dv = 4πr².dr

Now total change in this shell will be;

dQ = P.dv

so

dQ = b/r . 4πr².dr

dQ = b × 4πr.dr

Q = 4πb  [tex]\int\limits^R_r {r} \,dx[/tex]

Q =  4πb[ r²/2 ][tex]^R_r[/tex]

Q =  4πb[ R²/2 - r²/2 ]

Q =  2πb[ R² - r² ]

so we substitute our values

Q =  2π×3.0 × 10⁻⁶[ 0.06² - 0.04² ]

Q =  2π×3.0 × 10⁻⁶ × 0.002

Q = 3.7699 × 10⁻⁸ C or 3.7699 × 10⁻² μC

Therefore, the net charge in the shell is 3.7699 × 10⁻⁸ C or 3.7699 × 10⁻² μC

Answer:

the  force exerted by the seat on the pilot is 10766.7 N

Explanation:

The computation of the force exerted by the seat on the pilot is as follows:

[tex]F = Mg + \frac{MV^2}{R}\\\\= 70 \times 9.81 + \frac{70 \times 120^2}{100}\\\\= 10766.7 N[/tex]

Hence, the  force exerted by the seat on the pilot is 10766.7 N

Answer: 21.22 years.

Explanation:

Here we can simply use the relation:

Time = Distance/Speed.

We know that the speed of the passenger jet is 500mi/hr.

And the average distance between Earth and the Sun in miles is:

Distance = 92,955,807 miles

Then the time needed to travel that distance will be:

Time = (92,955,807 miles)/500mi/hr = 185,911.614 hours.

But we want this in years.

We know that in one day, we have 24 hours, then this time in days is:

Time = (185,911.614/24) days = 7,746.3 days.

And in one year we have 365 days, then this time in years is:

Time = (7,746.3/365) years = 21.22 years.

Answer:

the answer should be the third statement

Answer:

when a body has enough mass and gravity to create a celestial body with a round shape

Answer:

C. Dehydration is the word describing too little body fluids

Answer:

6

Explanation:

because I did this assignment, :) your welcome

Next time do it by yourself, but here's the answer kid

Answer:

Approximately [tex]9.62[/tex].

Explanation:

[tex]y_1 = 4.85\, \sin[(4.35\, x - 1270\, t) + 0][/tex].

[tex]y_2 = 4.85\, \sin[(4.35\, x - 1270\, t) + (-0.250)][/tex].

Notice that sine waves [tex]y_1[/tex] and [tex]y_2[/tex] share the same frequency and wavelength. The only distinction between these two waves is the [tex](-0.250)[/tex] in [tex]y_2\![/tex].

Therefore, the sum [tex](y_1 + y_2)[/tex] would still be a sine wave. The amplitude of [tex](y_1 + y_2)\![/tex] could be found without using calculus.

Consider the sum-of-angle identity for sine:

[tex]\sin(a + b) = \sin(a) \cdot \cos(b) + \cos(a) \cdot \sin(b)[/tex].

Compare the expression [tex]\sin(a + b)[/tex] to [tex]y_2[/tex]. Let [tex]a = (4.35\, x - 1270)[/tex] and [tex]b = (-0.250)[/tex]. Apply the sum-of-angle identity of sine to rewrite [tex]y_2\![/tex].

[tex]\begin{aligned}y_2 &= 4.85\, \sin[(\underbrace{4.35\, x - 1270\, t}_{a}) + (\underbrace{-0.250}_{b})]\\ &= 4.85 \, [\sin(4.35\, x - 1270\, t)\cdot \cos(-0.250) \\ &\quad\quad\quad\; + \cos(4.35\, x - 1270\, t)\cdot \sin(-0.250)] \end{aligned}[/tex].

Therefore, the sum [tex](y_1 + y_2)[/tex] would become:

[tex]\begin{aligned}& y_1 + y_2\\[0.5em] &= 4.85\, [\sin(4.35\, x - 1270\, t) \\ &\quad \quad \quad\;+\sin(4.35\, x - 1270\, t)\cdot \cos(-0.250) \\ &\quad\quad\quad\; + \cos(4.35\, x - 1270\, t)\cdot \sin(-0.250)] \\[0.5em] &= 4.85\, [\sin(4.35\, x - 1270\, t)\cdot (1 + \cos(-0.250)) \\ &\quad\quad\quad\; + \cos(4.35\, x - 1270\, t)\cdot \sin(-0.250)] \end{aligned}[/tex].

Consider: would it be possible to find [tex]m[/tex] and [tex]c[/tex] that satisfy the following hypothetical equation?

[tex]\begin{aligned}& (4.85\, m)\cdot \sin((4.35\, x - 1270\, t) + c)\\&= 4.85\, [\sin(4.35\, x - 1270\, t)\cdot (1 + \cos(-0.250)) \\ &\quad\quad\quad\; + \cos(4.35\, x - 1270\, t)\cdot \sin(-0.250)] \end{aligned}[/tex].

Simplify this hypothetical equation:

[tex]\begin{aligned}& m\cdot \sin((4.35\, x - 1270\, t) + c)\\&=\sin(4.35\, x - 1270\, t)\cdot (1 + \cos(-0.250)) \\ &\quad\quad + \cos(4.35\, x - 1270\, t)\cdot \sin(-0.250)\end{aligned}[/tex].

Apply the sum-of-angle identity of sine to rewrite the left-hand side:

[tex]\begin{aligned}& m\cdot \sin((4.35\, x - 1270\, t) + c)\\[0.5em]&=m\, \sin(4.35\, x - 1270\, t)\cdot \cos(c) \\ &\quad\quad + m\, \cos(4.35\, x - 1270\, t)\cdot \sin(c) \\[0.5em] &=\sin(4.35\, x - 1270\, t)\cdot (m\, \cos(c)) \\ &\quad\quad + \cos(4.35\, x - 1270\, t)\cdot (m\, \sin(c)) \end{aligned}[/tex].

Compare this expression with the right-hand side. For this hypothetical equation to hold for all real [tex]x[/tex] and [tex]t[/tex], the following should be satisfied:

[tex]\displaystyle 1 + \cos(-0.250) = m\, \cos(c)[/tex], and

[tex]\displaystyle \sin(-0.250) = m\, \sin(c)[/tex].

Consider the Pythagorean identity. For any real number [tex]a[/tex]:

[tex]{\left(\sin(a)\right)}^{2} + {\left(\cos(a)\right)}^{2} = 1^2[/tex].

Make use of the Pythagorean identity to solve this system of equations for [tex]m[/tex]. Square both sides of both equations:

[tex]\displaystyle 1 + 2\, \cos(-0.250) + {\left(\cos(-0.250)\right)}^2= m^2\, {\left(\cos(c)\right)}^2[/tex].

[tex]\displaystyle {\left(\sin(-0.250)\right)}^{2} = m^2\, {\left(\sin(c)\right)}^2[/tex].

Take the sum of these two equations.

Left-hand side:

[tex]\begin{aligned}& 1 + 2\, \cos(-0.250) + \underbrace{{\left(\cos(-0.250)\right)}^2 + {\left(\sin(-0.250)\right)}^2}_{1}\\ &= 1 + 2\, \cos(-0.250) + 1 \\ &= 2 + 2\, \cos(-0.250) \end{aligned}[/tex].

Right-hand side:

[tex]\begin{aligned} &m^2\, {\left(\cos(c)\right)}^2 + m^2\, {\left(\sin(c)\right)}^2 \\ &= m^2\, \left( {\left(\sin(c)\right)}^2 + {\left(\cos(c)\right)}^2\right)\\ &= m^2\end{aligned}[/tex].

Therefore:

[tex]m^2 = 2 + 2\, \cos(-0.250)[/tex].

[tex]m = \sqrt{2 + 2\, \cos(-0.250)} \approx 1.98[/tex].

Substitute [tex]m = \sqrt{2 + 2\, \cos(-0.250)}[/tex] back to the system to find [tex]c[/tex]. However, notice that the exact value of [tex]c\![/tex] isn't required for finding the amplitude of [tex](y_1 + y_2) = (4.85\, m)\cdot \sin((4.35\, x - 1270\, t) + c)[/tex].

(Side note: one possible value of [tex]c[/tex] is [tex]\displaystyle \arccos\left(\frac{1 + \cos(0.250)}{\sqrt{2 \times (1 + \cos(0.250))}}\right) \approx 0.125[/tex] radians.)

As long as [tex]\! c[/tex] is a real number, the amplitude of [tex](y_1 + y_2) = (4.85\, m)\cdot \sin((4.35\, x - 1270\, t) + c)[/tex] would be equal to the absolute value of [tex](4.85\, m)[/tex].

Therefore, the amplitude of [tex](y_1 + y_2)[/tex] would be:

[tex]\begin{aligned}|4.85\, m| &= 4.85 \times \sqrt{2 + 2\, \cos(-0.250)} \\&\approx 9.62 \end{aligned}[/tex].

Answer:

I thing it will option D thanks