HELP PLS its been a day and this lesson is due today and ita already night here and i have to solve this questions or else my parent will be mad pls help me pls im despo ):

Answer:

d

Explanation:

Answer:

5 or 6

Explanation:you

Answer:

The 3rd graph

Explanation:

The graph that says:

Fn = 27 N

Ff= -102 N

Fp= 34 N

Fg= -27 N

Answer:

Its B- overconfidence

Explanation:

The tendency to have more confidence in judgment and decisions than one should is called Overconfidence

Overconfidence  is a bias in which a person's subjective confidence is his or her judgement is reliably greater then the objective accuracy of those judgments when confidence is relatively high

Hence, The tendency to have more confidence in judgment and decisions than one should is called Overconfidence

correct answer : option B)Overconfidence

Learn more about  Overconfidence :

https://brainly.com/question/8748056?referrer=searchResults

#SPJ2

Answer:

Answer:

Stringed instruments (chordophones).

Explanation:

Musical instruments that produce sound by vibration of a stretched string are called stringed instruments (chordophones).

Some examples of stringed instruments are guitar, piano, harp, violin, sitar etc.

A guitar can be defined as a musical instrument with six or twelve strings and a long fretted fingerboard that are being played using a plectrum or by strumming (plucking) with the fingers, usually in a downward direction.

Basically, a guitar is a musical instrument that produces sound through regular vibrations and as a result of this, it is used for creating uniform and melodious sounds.

Answer:

It is found that W1 - W2 loss in weight of solid when immersed in water is equal to the weight of the water displaced by the body. This verifies Archimedes' principle.

Answer:

The  repulsive electrostatic force between two of the protons is 14.4 N.

Explanation:

Given;

distance between the two protons, r = 4 x 10⁻¹⁵ m

charge of a proton, q = + 1.6 x 10⁻¹⁹ C

The repulsive electrostatic force between two of the protons is calculated by applying Coulomb's law;

[tex]F = \frac{k q_1 q_2 }{r^2} \\\\where;\\k \ is \ Coulomb's \ constant = 9\times 10^9 \ Nm^2/C^2 \\\\F = \frac{9\times 10^9 \ (1.6\times 10^{-19})^2}{(4 \times 10^{-15})^2} \\\\F = 14.4 \ N[/tex]

Therefore, the  repulsive electrostatic force between two of the protons is 14.4 N.

Answer:

Answer:

A balanced force means that equal force is being applied to an object on opposite sides. If equal force is being applied, there will be no change in the motion of the object; it will remain stationary. A greater force needs to be applied to one side for movement to take place.

Explanation:

Hope this helps (づ｡ ◕‿‿◕｡) づ

Love ya

Answer:

Hi... Your answer is angular acceleration

Answer: 980 N*s

Explanation:

Answer:

The answer to this question is given below in the explanation section.

Explanation:

how the aperture geometry relates to the

diffraction pattern:

Diffraction is the spreading out of waves as they pass through an aperture or around objects.it occurs when the size of the aperture or obstacle is of the same order of magnitude as the wavelength of  the incident wave.For every small aperture sizes,the vast majority of the wave is blocked.For large apertures the wave passes by or through the obstacle without any significant of diffraction.

            in an aperture with width smaller than the wavelength,the wave transmitted through the aperture spreads all the way around the behave like a point sources of waves.

                             single slit diffraction pattern

The diffraction pattern made by waves passing through a slit of width [tex]\alpha[/tex] (larger than∫) can be understood by imagining a series of point sources all in phase along the width of the slit.The waves moving directly forward are all in phase,so they from a large central maximum.

                 if the waves travels at an angle Ф from the normal to the slit,then there is a path difference x between the waves production at the two end of the slit.

           x=a sinΦ

The path difference between the top and middle waves is λ/2 then they are exactly out of phase and cancel each other out. This happens to all consecutive pairs of waves (the ones produced by the second source from the top and the second source past the middle etc.)at the angle so there is no resultant wave at this angle.Thus a minimum is the diffraction pattern is obtained at

                                                   λ=α sinθ

Now slit can be divided into four equal sections and the pairing of sources to give destructive interference can be repeated for the top two section ,which is identical to the result of pairing off matching sources in the bottom two sections.in this case we obtained from the minimum.

             λ/2=α/4 sinθ

we can divided the slit aperture into six equal sections and pair off sources in the top two divisions and then the bottom two,to give destructive interference for every matched pair.The minimum of intensity are obtained at angles

                      nλ = α sinθ

where n is an integer (1,2,......),  but not n=0.There is a maximum of intensity in the center of the pattern. This process only gives the position of the minima,does not work for positions of the maxima,and so does not give the intensities of the maxima.

Answer:

s is distance so it's dimensions become L.

Nd other side we have ut+1\2at^2.

as 1\2 is a constant it will have dimensions and apply the dimensions to other quantities.

on solving u will get L there also i,e ur LHS = RHS.

thus the equation is dimensionally consistent.

Explanation:

Answer:

The correct answer is option D, Using an Electric mixer ( i hope this is the correct answer to what you are talking about because you didn't have any options but i gave out almost the same question to my students.)

Explanation:

Physical fitness is assured by activities in which our body is doing some kind of physical movements or exercise. In case of “walking to work “ the body is compelled to move or walk, in case of “carrying boxes up and down stairs” lot of physical work is done in both carrying the boxes and moving up and down the stairs, in the same way in case of “shoveling snow” some physical efforts are required to shovel the snow. But in case of using a  electric mixer, the only work being done is the “pressing of ON/OFF button”. Thus , "using an electric mixer" will have the LEAST effect on your level of physical fitness

Answer:

c.    1.5 s

Explanation:

i had this and i got it right

Answer:

1. The two main types of waves are body waves and surface waves. Body waves can travel through the earth's inner layers, but surface waves can only move along the surface of the planet like ripples on water. Earthquakes radiate seismic energy as both body and surface waves.

2. potential energy

3. Newton's second law of motion is F = ma, or force is equal to mass times acceleration.

4. Refraction is the bending of light

5. Density uses the formula p=m/V, or density (p) is equal to mass (m) divided by volume (V). Density is defined as mass per unit volume.

Explanation:

Answer:

The difference between colloid and emulsion is that a colloid can form when any state of matter (solid, liquid or gas) combine with a liquid whereas an emulsion has two liquid components which are immiscible with each other

Explanation:

Answer:

f = 1/t

1/1

=1

Explanation:

The frequency f = 1/T = ω/2π of the motion gives the number of complete oscillations per unit time. It is measured in units of Hertz, (1 Hz = 1/s).

Answer:

In biology, cell theory is the historic scientific theory, now universally accepted, that living organisms are made up of cells, that they are the basic structural/organizational unit of all organisms, and that all cells come from pre-existing cells. Cells are the basic unit of structure in all organisms and also the basic unit of reproduction.

Explanation:

The three tenets to the cell theory are as described below:

All living organisms are composed of one or more cells.

The cell is the basic unit of structure and organization in organisms.

Cells arise from pre-existing cells.

There is no universally accepted definition of life. Some biologists consider non-cellular entities such as viruses living organisms,[1] and thus reasonably disagree with the first tenet. Throughout this article, it will lead you through the history of cell theory, how the discovery of cells was made possible, what the cell theory has become today and background information and history regarding other opposing concepts of cell theory.

Answer:

[tex]\boxed {\boxed {\sf 500 \ Newtons }}[/tex]

Explanation:

The equation for force is given:

[tex]F=m*a[/tex]

First, we must find the total mass, which is the sum of the boy's mass and the go-cart's mass.

The boy's mass is 35 kilograms and the go cart's is 65 kilograms.

Now we know the total mass and the acceleration.

[tex]m= 100 \ kg \\a= 5 \ m/s^2[/tex]

Substitute the values into the formula.

[tex]F=100 \ kg * 5 \ m/s^2[/tex]

Multiply.

[tex]F= 500 \ kg*m/s^2[/tex]

[tex]F= 500 \ N[/tex]

The force exerted by the go cart engine is 500 Newtons.

Answer:

500 N

Explanation:

Your Welcome. (:

Answer:

A. 2m/(s^2)

I hope it will be useful.

Answer:

The maximum possible speed is 4.85 m/s.

Explanation:

The Principle Of Conservation Of Mechanical Energy

In the absence of friction, the total mechanical energy is conserved. It means that :

[tex]E_m=U+K[/tex] is constant, being U the potential energy and K the kinetic energy

U=mgh

Where m is the mass of the object, g is the gravitational acceleration and h is the height from a fixed reference.

[tex]\displaystyle K=\frac{mv^2}{2}[/tex]

Where v is the speed.

When the person is at a maximum height of 2 meters, the speed is 0. Thus the mechanical energy is made only of potential energy.

Let's fix the reference for the height to the point where the person is at minimum height (1 m from the ground level). The maximum height with respect to this reference is h=2.2 m - 1 m = 1.2 m.

The potential energy is:

U = m*9.8*1.2

U = 11.76m

When the person is at the minimum (zero) height, the mechanical energy is made only of kinetic energy. Since the mechanical energy is conserved, then:

[tex]\displaystyle \frac{mv^2}{2}=11.76m[/tex]

Multiplying by 2 and simplifying by m:

[tex]v^2=2*11.76=23.52[/tex]

Solving for v:

[tex]v=\sqrt{23.52}=4.85[/tex]

[tex]\boxed{v=4.85}[/tex]

The maximum possible speed is 4.85 m/s.

Answer:

See explanation

Explanation:

To find out the electronic structure of each element, you must know the number of electrons it contains.

If you find that out(the number of electrons in the neutral atom of an element is the same as its atomic number). Then you arrange those electrons in such a way that the first shell has only two electrons and subsequent shells have eight electrons.

Look up the groups to which the elements belong in the periodic table All the elements are in group 1 so the last shell must have only one electron.

Answer:

It would take 16.7 s for the work to be done by the engine.

Explanation:

From the question, given: Power = 390.3 kW

                                           Work to be done = 6.5 x [tex]10^{6}[/tex] J

But, power and work done with respect to time, has a relationship of:

Power = [tex]\frac{work done}{time}[/tex]

So that,

time = [tex]\frac{work done}{Power}[/tex]

Thus,

time  = [tex]\frac{6.5*10^{6} }{390.3*10^{3} }[/tex]

       = 16.6539

time = 16.7 s

Time required is 16.7 seconds.

Thus, it would take 16.7 s for the work to be done by the engine.

Answer:

stationary object with no outside force will not move. With no outside forces, a moving object will not stop. An astronaut who has their screwdriver knocked into space will see the screwdriver continue on at the same speed and direction forever. There are no forces acting on the screwdriver from friction.

Answer:

mountains, earthquakes, tsunamis

Explanation:

Answer:

Gravity

Explanation: