A sailboat started its journey at 6:30am and reached the destination at 6:30pm. If the distance of the journey was 144 miles, what was the sailboats average speed?___mph

Answer:

125.44 N

Explanation:

From the question given above, the following data were obtained:

Weight on earth = 784 N

Acceleration due to gravity of the moon (gₘ) = 1.6 m/s²

Weight on moon =?

Next, we shall determine the mass of the person. This can be obtained as follow:

Weight on earth (Wₑ) = 784 N

Acceleration due to gravity of earth (gₑ) = 10 m/s²

Mass (m) =?

Wₑ = m × gₑ

784 = mass × 10

Divide both side by 10

Mass = 784 / 10

Mass = 78.4 Kg

Finally, we shall determine the weight of the person on moon. This can be obtained as follow:

Mass (m) = constant = 78.4 Kg

Acceleration due to gravity of the moon (gₘ) = 1.6 m/s²

Weight on moon (Wₘ) =?

Wₘ = m × gₘ

Wₘ = 78.4 × 1.6

Wₘ = 125.44 N

Therefore, the weight of the person on moon is 125.44 N.

Answer:

ones longer than the other daa

Explanation:

Answer:

well, because of the moon!

Explanation:

you see, the moon is what controls the waves. waves are most commonly caused by wind. wind-driven waves, or surface waves, are created by the friction between wind and surface water. as wind blows across the surface of the ocean or a lake, the continual disturbance creates a wave crest. the gravitational pull of the sun and moon on the earth also causes waves. so when the gravitation pull is weak, it creates the shorter wavelengths. without a stong pull, they don't go as far. when the pull is strong, the waves with longer wavelengths go further.

Answer:

Isobars are similar to height lines on a geographical map, and they are drawn so that they can never cross each other. Meteorologists use isobars on weather maps to depict atmospheric pressure changes over an area and to make predictions concerning wind flow.

Explanation:

Answer:Isobars are similar to height lines on a geographical map, and they are drawn so that they can never cross each other.

Explanation:

Answer:

flows quickly

Answer:

Breakdown of rocks

Hope this helps :)

Answer:

Disintegration of rocks without chemical change.

Answer:

Angle of diffraction for second order maxima is θ = 18.941°

Explanation:

From the question it is given that

wavelength of incident light = λ = 541 nm = 541 x [tex]10^-^9 m[/tex]

order of maxima = n =2

diffraction grating has 600 lines per mm

⇒ distance between two slit is [tex]\frac{1mm}{600}[/tex] = 1.66 x [tex]10^-^6[/tex] m

using the relation of Braggs diffraction formula i.e.,

2dsinθ = nλ ..................................(1)

where, d = distance between two lines of grating

θ is the angle of diffraction

n= order of maxima

λ is the intensity of incident photon

on substituting the respected values in relation (1) we get,

2 x 1.66 x [tex]10^-^6[/tex]m sinθ = 2 x 541 x [tex]10^-^9 m[/tex]

⇒ sinθ = 0.3246

⇒ θ = [tex]sin^-^1(0.3246)[/tex] = 18.941 °

Answer:

Prats of the bicycle are a seat and tires

Simple Machines are brakes and a handler

Answer:

The pressure of the air in the tyre is 20 kPa

Explanation:

The parameters for the bicycle pump and tyre are;

The volume of air contained in the bicycle pump, V₁ = 20 cm³

The pressure of the air contained in the bicycle pump, P₁ = 100 kPa

The volume (available) of the tyre, where the air is pumped, V₂ = 100 cm³

Let P₂ represent the pressure in the tyre after the air is pumped

By Boyle's law, we have that at constant temperature, the volume of a given mass of gas is inversely proportional to its pressure;

Mathematically, Boyle's law gives the following equation;

P₁ × V₁ = P₂ × V₂

∴ P₂ = (P₁ × V₁)/V₂

Substituting the known values gives;

P₂ = (100 kPa × 20 cm³)/(100 cm³)

∴ P₂ = 100 kPa × 1/5 = 20 kPa

P₂ = 20 kPa

The pressure of the air in the tyre = P₂ = 20 kPa.

Answer:

v=u+at

v=21+1.4(11)

v=21+15.4

v=36.4

Answer:

The spring stretches or compresses 0.8 m (80 cm)

Explanation:

Hooke's Law

The force (F) needed to stretch or compress a spring by some distance Δx is given by

[tex]F=-k\Delta x[/tex]

Where k is a constant factor characteristic of the spring.

We are given the constant of a spring k=50 N/m and it's required to calculate the displacement Δx produced by a force of F=40 N. Solving for Δx:

[tex]\displaystyle \Delta x=\frac{F}{k}[/tex]

[tex]\displaystyle \Delta x=\frac{40}{50}[/tex]

Calculating:

[tex]\displaystyle \Delta x=0.8\ m[/tex]

The spring stretches or compresses 0.8 m (80 cm)

Answer:

50,000 J because of the transformation of energy

Explanation:

Answer:

Commensalism

Explanation:

Trust Me

The symbiotic relationship in which one organism benefits and the other is harmed (+/-) is called parasitism. For example, infectious microbes living in our body.

The long term relationship between two different kind of living organism is called symbiosis. There are different types symbiotic relations namely, mutualism, commensalism, parasitism etc.

The interaction in which both organism gets helped by each other is called mutualism. For example, fid fruit and flies. If only one organism is helped by the interaction and the other is not affected is called commensalism.

symbiotic relationship in which one organism benefits and the other is harmed (+/-) is called parasitism. The organisms which make threat to the other by this interaction are called parasites.

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Answer:

its b

Explanation:

cause im in  7th grade ive been asked the same question

Answer:

Styrofoam would be the best insulator because it traps the air in small pockets, blocking the flow of heat energy.

Explanation:

Explanation:

Needles sinks in water due to the more density of needles than the density of water. But ship is made hollow and contains air. So it's average density Is less than that of water. It displaces the liquid of it's own weight causing the ship to float on water.

So, it it possible for iron ships to float on water,but needles sink when dropped in water.

Hope it will help :)❤

Answer:

the mass stays the same

Explanation:

the more mass the faster

Answer:

The mass stays the same

Explanation:

i had this question and got it right

Answer:

27.39 m/s

Explanation:

From the question given above, the following data were obtained:

Deceleration (a) = –3 m/s²

Distance (s) = 125 m

Final velocity (v) = 0 m/s

Initial velocity (u) =?

The initial velocity (u) of the car can be obtained as follow:

v² = u² + 2as

0² = u² + (2 × –3 × 125)

0 = u² + (– 750)

0 = u² – 750

Collect like terms

0 + 750 = u²

750 = u²

Take the square root of both side

u = √750

u = 27.39 m/s

Thus, the initial velocity of the car was 27.39 m/s

Answer:

For Jin, the speed of the arrow is 13 m/s, and for the archer, the speed of the arrow is 17 m/s.

Explanation:

EDGE2020 :)

B

Answer:

B.

Explanation:

Edge 2021

Answer:

Its true i'm pretty sure

Explanation:

Answer:

The answer is True

Explanation:

because it is and I suck at explaining

The magnitude of inertia depends on the mass of the body.

The term inertia has to do with the degree of resistance to motion. We know that an object will continue in its state of rest or uniform motion unless it is acted upon by an external force.

The magnitude of inertia depends on the mass of the body. Since the truck is more massive than the car, it follows that a moving truck takes a much longer time to stop than that taken by a car when brakes are pressed at the same time​.

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Answer:

The nitrogen cycle is a natural process that adds nitrogen to the soil. However, the use of fertilizers has increased the amount of usable nitrogen in the soil. The extra nitrogen seems appealing from the agricultural viewpoint that more nutrients in the soil means higher yield crops...

Answer:

because the gas within the black box will absorb more heat than that in the surrounding

Explanation:

this is because the black color has a tendency of absorbing heat

Answer:A pendulum consists of a ball at the end of a massless string of length 1.4 m. The ball is released from rest with the string making an angle of 20 degrees with the vertical. What is the maximum speed of the pendulum?

Explanation: Have a great day and oh here is a little something to warn the great people. In the comments....

;)

Answer:

They are Transverse Waves.

Answer: Transverse waves

Answer:

Gases, liquids and solids are all made up of atoms, molecules, and/or ions, but the behaviors of these particles differ in the three phases. ... gas are well separated with no regular arrangement. liquid are close together with no regular arrangement. solid are tightly packed, usually in a regular pattern.

Explanation:

gases are well separated with no regular arrangement.

solid are tightly packed usually in regular

pattern.

The star’s core shrinks, this happens first when a star begins to run out of fuel. Hence option A is correct.

A star is a type of celestial object that consists of a bright spheroid of plasma kept together by self-gravity. The Sun is the closest star to Earth. Many other stars can be seen with the open eye at night, but due to their great distances from Earth, they appear as fixed points of light. Many of the brightest stars have proper names, and the most prominent stars have been classified into constellations and asterisms. Astronomers have put together star catalogues that identify known stars and offer conventional stellar designations. An estimated 1022 to 1024 stars exist in the visible cosmos. Only about 4,000 of these stars can be seen with the open eye, and they are all located within the Milky Way galaxy.

Hence option A is correct.

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Answer: the drink cooled down to the same temperature as the room it was in.

Explanation: due to the change and temperature of the room, it cause the heat particles to exchange, causing it cool