Answer question in two or more sentences thanks

Answer:

Solve it simply,

Vi = 20 m /sec

Vf = 0 ( at max. height)

g = - 9.8 m/ sq. sec. ( -ve sign shows that the motion of the body is in opposite direction to that of gravity)

Height it gains=h = ?

time taken by the body=t=?

Using 3rd equation of kinematics,

2gh=Vf ˄2 – Vi˄2

implies that

h = Vf ˄2 – Vi˄2 / 2a

h = 0˄2 - (20)˄2 / 2(-9.8) = - 400/ -19.6

h = 20.4 m

So the maximum height the body can gain is approximately equal to 20.4 m.

Now , using 1st equation of kinematics:

Vf = Vi + at implies that,

t = Vf - Vi/g = 0 - 20/ - 9.8 = 2.04 sec.

So, it will take 2.04 sec. to get the max. height.

Note: in simple approximation if we take g =- 10 m/ sq.sec then the max. height the body can attain will be 20 m and the time required for it, is 2 sec.

Answer:

The number of turns in a coil

Explanation:

Answer:

0.82

Explanation:

constant velocity.means acceleration a = 0, so net force = 0

F - μmg = ma = 0

so μ = F/(mg) = 200/(25*9.8) = 0.82

Answer:(-4,3)

Explanation: They didn’t show the whole graph so it looks confusing but it’s not.

Answer:

Category 1

Explanation:

I hope this helps

Answer: CAT-1

Explanation:

The phase of the Moon changes from new Moon to a full Moon when the Moon moves around the earth until it is between the Sun and the Earth.

The moon is a large massive body which is found in orbits around the earth.

The moon is said to be the satellite of the earth and orbits the earth in the form of a moon cycle or phases.

The moon cycle occurs when the move moves around the earth from the full moon to a new moon.

Therefore, the phase of the Moon changes from new Moon to a full Moon when the Moon moves around the earth until it is between the Sun and the Earth.

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#SPJ1

Answer:

an acceleration of the boy as it passes through the board and be the total time the boy is in contact with the board solution

Answer:

the speed bump would slows down the car 40% of most vehicles. speeding cars would deterred. this would result in fewer accidents.

Answer:

Explanation:

2^5=32-20=-12 meters per sec (going backwards).

If this is correct pls mark me. brainly to let me know, tyy C:

Answer:

-1.76

Explanation:

emf=-1.76V

The work done on the mouse by air resistance is equal to 196 Joules.

Given the following data:

Mass = 200 grams to kg = 0.2 kg.

Distance = 100 meters.

Scientific data:

Acceleration due to gravity = 9.8 [tex]m/s^2[/tex]

In Science, work done is generally calculated by multiplying force and the vertical distance or displacement experienced by an object.

Mathematically, work done is given by the formula:

[tex]Work\;done = force \times displacement = mgh[/tex]

Substituting the given parameters into the formula, we have;

[tex]Work\;done = 0.2 \times 9.8 \times 100[/tex]

Work done = 196 Joules.

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Answer:

Force

Explanation:

An applied force affects the motion of an object. An applied force can be a push, pull, or dragging on an object.

- profparis

Answer:

Explanation:

average acceleration= (15-0)/5

                                   =15/5

                                   3ms-2

The total distance covered by Jhen is 210 m and the total displacement is zero (0).

The total distance covered by Jhen is calculated as follows;

D = 70 m x 3  (since 1 lap is equal to one length of the pool = 70 m)

D = 210 m

The displacement of Jhen is the change in the final position and the initial position of Jhen.

After 3 laps, the final position = the initial position

Displacement = 0

Thus, the total distance covered by Jhen is 210 m and the total displacement is zero (0).

The complete question is below:

Find the total distance and displacement of Jhen.

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Following the Law of reflection we can assume that the expression for the distance from the point of reflection on the water to the bottom of the light pole is d = (H (L-d)) / h.

The Law states that the reflection angle -θ₂- of an incident ray on a reflecting surface will be equal to the incidence angle -θ₁- of that ray.

Both angles, the reflection and the incidence one, are measured conserning the normal to the surface.

The law of reflection derives from Fermat's principle and states that the triangle formed between the incident ray and the surface, and the triangle produced by the reflected light and the surface are the same.

In the exposed example, if

If,

θ₁ = θ₂

h/L-d = H/d    

Then, the distance from the point of reflection on the water to the bottom of the light pole, d is

d = (H (L-d)) / h

In the atached files you will find the diagram.

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Answer: x = 128°

180° - 52° = 128°

Answer:

128 degrees

Explanation:

A circle has a degree of 360, all around. You can imagine a circle, with the center being where the line intercepts the right angle.

360 = 52 + 38 + 142 + x

360 = 232 + x

128 = x

Answer:

A

Explanation:

they are atoms of the same element that have the same number of protons but different number of neutrons.

With a constant angular acceleration of 1.27 rad/s^2 and acceleration of 27.5 s, is mathematically given as

[tex]\theta = 1848 radians[/tex]

Generally, the angular velocity  is mathematically given as

w2 = 0 + 1.27*27.9

w2 = 35.43 rad/s

Therefore

[tex]\theta1 = 0.5*1.27*27.9*27.9[/tex]

[tex]\theta2 = w2*(66.1-27.9)\\\\\ \theta = \theta1 + \theta2[/tex]

[tex]\theta = 1848 radians[/tex]

In conclusion, the total angle is

[tex]\theta = 1848 radians[/tex]

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Answer:

The mass of the object.

The friction involved.

The amount of force applied to the object.

The gravity pulling on the object.

Explanation:

I think that all answers are correct with the right explanation.

the mass is what is pulled on by gravity to determine weight.

friction opposes motion.

gravity pulls everything to the earth's centre

force makes an object to either stop, change direction or increase the velocity of an object depending on the amount.

This question involves the concepts of focal length and mirror formula.

The image distance will be "1 cm".

The mirror formula relates the focal length, image distance, and object distance through the following formula:

[tex]\frac{1}{f}=\frac{1}{p}+\frac{1}{q}[/tex]

where,

Therefore.

[tex]\frac{1}{1.5\ cm}=\frac{1}{3\ cm}+\frac{1}{q}\\\\\frac{1}{1.5\ cm}-\frac{1}{3\ cm}=\frac{1}{q}\\\\0.667 + 0.333 = \frac{1}{q}\\\\[/tex]

q = 1 cm

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Answer:

The image distance is 3.0 cm

Explanation:

Object distance: 3.0 cm          Focal length: 1.5 cm       Image distance: ? cm

1/f=(1/ do）+（1/di​​​​​​​)

1/1.5=(1/3.0)+(1/x)

(2/3)-(1/3)=1/x

1/3=1/x

x=3.0 cm

The image distance is 3.0 cm.

If the Sun disappeared suddenly, we wouldn't know about it for about 8 minutes ... that's how long it takes for heat and light from the Sun to get here to Earth.

8 minutes after the Sun disappeared, the sky would turn totally black.  All plants would immediately stop growing ... including all the plants that people or animals eat to live.

Then, after a few more minutes, we would start to notice that it was beginning to slowly get cooler, and that would continue until Earth was too cold for anything to live on it.

Answer:

2.20 s

Explanation:

[tex]T=2\pi\sqrt\frac{L}{g}=2\pi\sqrt\frac{1.2}{9.8}}[/tex]

T = 2.20 s

Answer: 0.75 Ohms

Explanation:

Use the Joule heating law stating that the power is equal to the square of the voltage over the resistance:

[tex]P=V^2/R[/tex]

Plug everything in:

[tex]48=(6^2)/R[/tex]

[tex]R=6^2/48[/tex]

[tex]R=36/48=0.75[/tex]

The tension in ropes 1 and 2 is mathematically given as

a)T1=310N

b)T2=610N

Question Parameters:

A rescuer is hauling up an injured climber who weighs 930 N

Generally, from the diagram, we see that the respective Tensions is mathematically given as

T2=2T1

Where

T1+T2=930

3T1=930

T1=310N

In conclusion, the tension in rope 2

T2=2T1

T2=2*310

T2=610N

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Answer: I am not sure if you wanted me to answer this or not.

Explanation:

Answer:

Photography is the art, application, and practice of creating durable images by recording light, either electronically by means of an image sensor, or chemically by means of a light-sensitive material such as photographic film.

Explanation:

In the definition of photography:

the art or process of producing images by the action of radiant energy and especially light on a sensitive surface (such as film or an optical sensor)

Purpose of photography:

To communicate and document moments in time.

Explanation:

When you take a photograph and share it with others, you're showing a moment that was frozen through a picture. This moment can tell someone many things, from the environment to what people are doing.

Hope this helps you.

Answer:

It's an art or an application of clicking photos .