if two wind-driven waves moving from different directions came together in such a way that the wave crests overlap to form a single crest, what would happen to the size of the waves? the newly formed wave would

A regular polygon's interior angles add up to 3060° of a 19 sided polygons.

Polygons are defined as a flat shape surrounded by sides, or line segments.

It can be defined as a plane figure whose description is given by a closed polygonal chain made up of a finite number of straight line segments.

It can also be defined as any closed curve made up of a number of connected line segments that do not cross one another.

Sum of interior angle = (p - 2) x 180°

Where p = 19

Sum of interior angle = (19 - 2) x 180°

                                   = 17 x 180°

                                   = 3060°

Thus, a regular polygon's interior angles add up to 3060° of a 19 sided polygons.  

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Because using natural gas is less polluting than petroleum or coal.

Natural Gas is a cleaner fuel than these. Natural gas emits a third less carbon dioxide than coal and emits half less than oil when used for different purposes.
The benefits of using natural gases are:

1. Domestic availability

2. relatively low cost
3. burns efficiently

4. reliable

5. relatively safe

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Given:

R1 = 56Ω

R2 = 8 Ω

Give that the resistors are i

Answer:

30.3 m

Explanation:

vf = final velocity = 0 at the apex

vo = original velocity = 24.39 m/s

a = - 9.81 m/s^2

vf = vo + at

0 = 24.39  -9.81 t   shows t= 2.486 s

df = final height

df = vo t  + 1/2 a t^2

   = 24.39( 2.486) + 1/2 ( -9.81)(2.486^2) = 30.3 m

The final momentum will be doubled.

What is momentum?

momentum is the result of a particle's mass and velocity. Being a vector quantity, momentum possesses both magnitude as well as direction. According to Isaac Newton's second law of motion, the force acting on a particle is equal to the time rate of change of momentum. Check out Newton's laws of motion. According to Newton's second law, if a particle is subjected to a constant force for a specific amount of time, the result of the force and time (referred to as the impulse) is equivalent to the change in momentum. On the other hand, a particle's momentum represents the length of time needed for a consistent force to bring it to rest.

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The magnitude and location of the resultant of the distributed load is given as

[tex]\bar{x}=3.4545 \mathrm{~m} \quad$[/tex]

This is further explained below.

Generally, In the fields of physics and engineering, a resultant force is a single force and related torque that is created by combining a system of forces and torques operating on a rigid body by vector addition. This process yields the single force and associated torque.

[tex]$\sum F_y=0$$F_R=\frac{1}{2} \times(600+1600) \times 6=6600 \mathrm{~N}$\\\\$\sum M_2=0$[/tex]

[tex]$$F_R \times \bar{x}=(600 \times 6) \times\left(\frac{6}{2}\right)+(0.5 \times(1600-600) \times 6) \times\left(\frac{6 \times 2}{3}\right)\\\\$$$6600 \bar{x}=10800+12000$\\\\$\bar{x}=3.4545 \mathrm{~m} \quad$[/tex]

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CQ is attached below

Answer:

Kepler refined the Copernican model. Orbits are not circles along which planets move at a constant speed, but ellipses, in the central focus of which is the Sun. The planet moves in an ellipse with a variable speed depending on the distance to the Sun. On this basis, Kepler significantly simplified the Copernican model and formulated the laws of planetary motion in their orbits.

The initial velocity of the cannon ball when it reached a height of 4.75 m is 9.65 m/s.

Velocity can be defined as the rate of change of displacement.

To calculate the initail velocity of the cannon ball, we use the formula below.

Formula:

Where:

From the question,

Given:

Substitute these values into equation 1

Hence, the initial velocity of the cannon ball is 9.65 m/s.

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A woman Standing and watching stars on a cool and calm night will lose most of her body heat by the mechanism of radiation.

In conduction method of thermal energy transfer energy take place between the objects by using the direct contact between the particles.

Convection is a method of heat transfer in which fluids do the heat transfer generally.

Evaporation method of heat transfer it is just a method cooling down the temperature of the body.

The only method of heat transfer that is valid in this case is radiation in which the heat transfer take place by the use of electromagnetic radiations coming directly from the sun or the moon or the stars.

So the correct answer here is only radiation.

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Answer:

so people cant hack into a device (phone,tablet,computer) & find out where you are & kill you.

Explanation: very useful if you have any devices

An apparent brighter blue star.

The hue of light emitted by a star depends on its surface temperature. Yellow stars are hotter than red stars, and yellow stars are hotter yet than blue stars.

The difference between a star's magnitude in one filter and its magnitude in another filter is that star's color index. Color indices can be calculated using any filter, but some of the more used ones are B-V and V-R. Red wavelengths are B, green wavelengths are V, and blue wavelengths are B. The star is bluer (and hotter) if B - V is small than if B - V is high since magnitudes decline with increasing brightness.

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A is 2.56 . A function is a mathematical relationship in which the values of one or more independent variables influence the values of a single dependent variable.

The independent variable determines the dependent variable through function (s).

A variable is a value that is stored, and a function is a program (I can't think of another word for it). So you can have a n variable that stores the value 1, and a function called print(n) that prints whatever is inside the parenthesis, (n in this example), so the value stored in n is printed.

Therefore,

y = 13.9, x = 4.45, and B = 8.87,

13.9=A × 2(4.45) - 8.87

Switch sides

A × 2(4.45) - 8.87 = 13.9

Remove parentheses:

A × 2 × 4.45 - 8.87 = 13.9

Multiply the numbers: 2 × 4.45 = 8.9

8.9 A - 8.87 = 13.9

Multiply both sides by 100

8.9 A × 100-8.87 × 100= 13.9 × 100

Refine

890 A - 887 = 1390

Add 887 to both sides

890 A - 887 + 887 = 1390 + 887

Simplify

890 A = 2277

Divide both sides by 890

[tex]$\frac{890 A}{890}=\frac{2277}{890}$[/tex]

Simplify

[tex]$A=\frac{2277}{890}[/tex]

A = 2.56

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A wet bar of soap (m=150 grams) starts at rest and slides without friction down a ramp 2.0 N meters long inclined at 7.3°. It take 1.792 second time to reach the bottom.

Friction is a force that resists the relative motion of two contact points. Friction happens when two bodies come into touch with each other.

Given that,

A wet bar soap mass = 150 gm

Length (l) = 2m

angle (θ) = 7.3°

As we know, F = m × g × Sinθ

Acceleration (a) = [tex]\frac{F}{m}[/tex] = g × Sinθ

a = (9.8) × Sin 7.3°

a = 1.2452 m/s²

Next,

S = ut + 1/2 at²

2 = 0 + 1/2 × (1.2452) × (t)²  [ As, u = 0 m/s]

t² = 3.212335

t = 1.792 seconds

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Light rays bend towards the normal because they slow down when moving from a rarer medium to a denser medium.

The reason behind the refraction of rays of light towards normal is that because slow down when moving from a rarer medium to a denser medium.

If the light rays enter any substance with a higher refractive index (which includes air into glass) then it will slow down. The light always bends towards the ordinary line. If mild travel enters into a substance with a lower refractive index (which includes from water into the air) then it will speed up. Therefore the ray of light always refracted towards the normal.

When the light rays enter from the air into a denser medium like water or glass then the ray of light will refract towards the normal. When light travels from a denser medium into the air, it will refract away from the normal.

So we can conclude that light rays slow down when moving from a rarer medium to a denser medium.

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Two students push on a box in the same direction and a third student pushes in the opposite direction. The net force on the box if each push with a force of 50 N is (F)= 50N.

According to the first law of newton's law of motion when a particle is at rest it always be at rest if any external thing affect on it. That external or internal thing that helps the object move that called Force. It can be measured in Newton, Dyne.

To calculate the force we have to study the question carefully. Two  students push on a box in the same direction and a third student pushes in the opposite direction. So according to the question the net force will be,

F = 2f₁-f₂

Here we know,

f₁= The amount of force that two students apply on the same direction. = 50 N.

f₂= The amount of force that students apply on the opposite direction. = 50 N.

We have to calculate the net force= F N.

Now we put the values in above equation, we get,

F = 2f₁-f₂

Or, F= 100-50

Or, F=50N

From the above calculation we can say that,  The net force on the box if each push with a force of 50 N is (F)= 50N.

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Due to velocity being 0

For distance, acceleration, and time, we may apply a straightforward equation.

d = 0.5*a*t^2

D and T are known.

calculate a

2*d/t^2 = a

thus entering the values

a = 2*47/6.2^2

a = 2.45 m/s^2

This is certain.

Second, if it reaches the inclination 1 second after 6.2 seconds, how long did it take overall?

t = 6.2+1 = 7.2 seconds

Possibly, although it might be asking the distance, that is the response to B).

d = 0.5*2.45*7.2^2

= 63.5 m

Magnitude is simply defined as "distance or quantity." It displays an object's size or motion in either an absolute or relative sense. It is a means of describing the size or breadth of something.

An object is considered to have been accelerated if its velocity changes. An object's velocity may alter depending on whether it is going more quickly, more slowly, or in a different direction.

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Explanation:

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bajwjkwwjehjwkwkwmw

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........,.................

.....

Answer:

Explanation:

Given:

α = 90°

V₀ = 2.2 m/s

__________

H - ?

H = V₀² / (2*g)   =  2.2² / (2*10) ≈ 0.24 m

The maximum height  obtained by the ball is 24 cm.

The pace at which an object's position changes in relation to a frame of reference and time is what is meant by velocity. Since it is a vector quantity, the definition of velocity requires both magnitude (speed) and direction. Its SI unit is the meter per second (m/s).

Given parameters:

Initial velocity of the tennis ball, u = 2.2 m/s.

And the ball is thrown at  90 degrees from the horizontal .

So, acceleration due to gravity acts on the ball in opposite direction of motion and value of it is 9.8 m/s².

At maximum height H; final velocity (v) is zero.

Using v² = u² - 2as we get,

0² = 2.2² - 2×9.8×H

⇒ H = 2.2²/(2×9.8)

⇒ H = 0.24 m.= 24 cm.

Hence, the maximum height of the ball is 24 cm.

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The motion when she is running directly east is Δx = 11.7 and Δy = 15.

To determine the slope of a line select two points on the line and calculate the delta y change in y value to determine the change in elevation. Divide the change in x value by the delta x to determine the change in width. The derivative of y is the square of x with respect to y.

So the derivative of something squared with respect to something is multiplied by the derivative of that thing with respect to x. That's exactly the chain rule. Yes, it means exactly the same. y in Newton notation and dy/dx in Leibniz notation. Newton and Leibniz independently invented calculus at about the same time, so in this case, they used different notations to express the same rate of change.

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A. Its kinetic energy increases occurs as the potential energy of an object decreases.

The mass and height of an item affect how much gravitational potential energy it has. More gravitational potential energy is held by an item the heavier it is and the higher it is above the surface of the earth. As weight and height grow, gravitational potential energy rises.

The mass of the item has a significant role in determining the gravitational potential energy. The mass and potential energy are intimately related. As a result, an item with higher mass has more potential energy.

A falling object loses potential energy while gaining kinetic energy. The difference between the increase in kinetic energy and the reduction in potential energy is exact. Work is a further crucial idea.

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The correct word matching of the given waves are:

Water Surface Ripples

Sound Waves

Longitudinal waves are waves that the direction of the vibration of the wave is in the same direction of the travel of the particles of the medium.

Example of longitudinal waves are sound waves.

Transverse waves are waves that the direction of the vibration of the wave is perpendicular to the direction of the travel of the particles of the medium.

Example of transverse waves are water waves.

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The correct statement is - Quantity B, because it changes with gravitational strength.

Quantity B is Weight

Quantity A is the Mass - because it remains constant throughout.

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a) The block goes 7.4 m up the plane

b) It takes 1.62 seconds to get there

c) The speed at the bottom is -9.1 m/s

The initial speed, v₀ = 9.12 m/s

Angle of inclination, θ = 35°

Note that the summation forces on the block as it goes up the inclined plane is 0. That is, ΣF = 0

mgsinθ + ma = 0

mgsinθ = -ma

a = -gsinθ

The acceleration of the block up the plane is:

a = -9.8 sin 35

a = -5.62 m/s²

a) How far up the plane does it go?

Using the equation v² = v₀² + 2as

At the maximum distance up the plane, v = 0

0² = 9.12² + 2(-5.62)s

0 = 83.17 - 11.24s

11.24s = 83.17

s = 83.17/11.24

s = 7.4 m

The block goes 7.4 m up the plane

b) How long does it take to get there?

Using the equation v = v₀ + at

Since we want to calculate the time taken to reach the maximum distance, the speed at this point is 0. v = 0m/s

Substitute a = -5.62, v₀ = 9.12, and v = 0 into v = v₀ + at

0 = 9.12 + (-5.62)t

5.62t = 9.12

t = 9.12 / 5.62

t = 1.62 seconds

c) What is its speed when it gets back to the bottom?

The total time it takes the block to go up and down the plane = 2(1.62)

The total time it takes the block to go up and down the plane = 3.24 s

To calculate the speed of the block when it gets back to the bottom, use the equation v = v₀ + at

v = 9.12 + (-5.62)(3.24)

v = 9.12 - 18.21

v = -9.1 m/s

Answer: energy loss

Explanation: the rest of the energy passes out of the food chain in a number of ways it is used as heat energy it is used for life processes movement faeces and remains are passed to decomposers

The vertical distance through which the motor can raise the safe in 10 s is most nearly 10.2 m

We'll begin by obtainig the energy. This can be obtained as follow:

Power (P) = Energy (E) / time (t)

Cross multiply

Energy = Power × time

Energy = 1000 × 10

Energy = 10000 J

Finally, we shall determine the vertical distance. Details below:

E = mgh

10000 = 100 × 9.8 × h

10000 = 980 × h

Divide both sides by 980

h = 10000 / 980

h = 10.2 m

Thus, the vertical distance is 10.2 m

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Kepler's third law, p^2 = a^3, means that the square of the total time period of a planet's revolution the sun is directly proportional to the cube of its mean distance from the Sun.

Kepler's third law is also known as the law of periods. It states that the shorter the orbit of the planet around the sun, the shorter will be its time period. These  equation have helped to calculate the total time period of the planets of the Solar system.

Using Newton's law of gravitation, we can simplify the above equation as:

                    P^2 = 4π^2 /[G(M1+ M2)] × a^3

Here M1 and M2 are the masses of the revolving objects.

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The actual velocity of the boat is 36 km/hr, downstream. Option C.

Solution:

Water velocity, v = 15 km/h

Downstream boat velocity, u = 21 km/h

Boat actual velocity = v'

v' = v + u

⇒ v' = 15 km /h + 21 km/h

u = 21 km/h +15 km/h = 36.0 km/h downstream.

At first glance, the sea looks flat but it is not. If you look closely wind, current, and wave action affect the six movements of the ship: heave, pitch sway roll pitch, and yaw. Relative velocity is defined as the velocity of object B in the still frame of another object A. The SI unit for velocity is meters per second m/s. Alternatively, velocity magnitudes can be expressed in centimeters per second cm/s.

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A driver travels 135 km east in 1.5 h stops for 45mins for lunch and then resumes driving fir the next 2.0h through a displacement of 215 kn east.  the drivers average velocity is 82.3 km / hr.

given that :

distance travel d1 = 135 km

time taken t1 = 1.5 h

hault time t = 45 mins = 0.75 h

distance travelled d2 = 215 km

time t2 = 2.0 h

Average velocity  =  Total time taken / time

Average velocity = ( 135 km + 215 km ) / ( 1.5 h + 0.75 h + 2.0 h)

                            = 350 km / 4.25

                            = 82.3 km / hr

Thus, A driver travels 135 km east in 1.5 h stops for 45mins for lunch and then resumes driving fir the next 2.0h through a displacement of 215 kn east.  the drivers average velocity is 82.3 km / hr.

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Answer:water

Explanation:

Water may be a nutrient that makes up 60% of our body weight. it's important in many functions, it's part of every cell in every tissue in the body.

Water carries other nutrients to all or any parts of the body, it carries waste out of the body and it helps to manage body temperature. When you run or play sports your body heats up pretty quickly.

Your body starts to sweat as a way to get rid of the heat. When the sweat evaporates on your skin your body and blood get cool. it's very important to replace the fluid that is lost by sweating so as not to become dehydrated.

If you get dehydrated the body cannot cool itself anymore and your performance will drop. Without enough water, whether you're exercising or sitting all day, you're at risk for dehydration which can be fatal

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The maximum speed with which a 1200- kg car can round a turn of radius 92.0 m on a flat road if the coefficient of static friction between tires and road is 0.40 will be 18.6 m/s.

A force that holds an object at rest is called static friction. The definition of static friction is: The resistance people feel when they attempt to move a stationary object across a surface without actually causing any relative motion between their body and the surface they are moving the object across.

The frictional force acting on the car is given by:

[tex]F_{f} =umg =(0.40) (1200kg)(9.81m/s^{2} )=4709N[/tex]

The force applied to an item in curved motion that is pointed toward the axis of rotation or the centre of curvature is known as a centripetal force. Newtons are used to measure centripetal force. The direction of the centripetal force is always perpendicular to the direction in which the item is moving.

However, the centripetal force, which keeps the car turning in a circle, is also related to the frictional force:

[tex]F_{f} =F_{c} =m \frac{v^{2} }{r}[/tex]

Where v is the fastest the car can travel while still in the turn. We may get the value of v by rearranging the formula and substituting r=88.0 m:

[tex]v=\sqrt{} \frac{Fx_{r} }{m} = \sqrt{}\frac{(4709N)(88..0m)}{1200kg}[/tex]

18.6 m/s

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