What can spectroscopes tell us about a space object?
A. provide imagery

B. calculate location

C. determine temperature, chemical composition, and speed

D. determine temperature, chemical composition, and size

Answer:

The earth's axis of rotation is tilted 66.5 degrees with respect to its orbital plane around the sun and its axis of rotation is inclined 23.5 degrees from the perpendicular, with respect to this plane. The tilt of the earth affects the angle between the sun beam and the normal over a surface.

Earth orbits at an angle, so half the year, the Northern Hemisphere is tilted toward the Sun — this is summer in the Northern Hemisphere, and winter in the Southern Hemisphere. The other half of the year, the Northern Hemisphere is tilted away from the Sun, creating winter in the north and summer in the south.

When the Earth's axis is tilted toward the sun for the Northern Hemisphere, the people in the Northern Hemisphere experience summer, while at the same time, the Southern Hemisphere is tilted away from the sun and the people there experience winter.

The Northern Hemisphere receives the maximum intensity of the sun's rays, while the angle of sunlight decreases in the Southern Hemisphere.

When the sun's rays strike Earth's surface near the equator, the incoming solar radiation is more direct (nearly perpendicular or closer to a 90˚ angle). Therefore, the solar radiation is concentrated over a smaller surface area, causing warmer temperatures.

Answer:

xfxy naa

Explanation:

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Answer:

Blue light has the shortest wavelength amongst all the colours that combine to make white light. This means the blue light diffracts (bends) the most out of all of them. There will be no dispersion of colours because ideally, the blue light must consist of only one frequency.

Answer:

-11151.69N

Explanation:

Wy= -mgcos21=-1150*9.81*cos8.7=-11151.69N (negative because weight points downwards)

y- component  = -11151.69N

Wy= -mgcos21=-1150*9.81*cos8.7=-11151.69N

(negative because weight points downwards)

This item will finally boost up down the inclined plane due to the presence of an unbalanced pressure. it's far the parallel element of the pressure of gravity that reasons this acceleration. The parallel aspect of the force of gravity is the net force.

The y-issue of Vector B is contrary to the 40o perspective. while finding additives through drawing a right triangle across the given attitude, you want to put within the symptoms explicitly. In this case, the y-thing points up and so is wonderful.

For the maximum element, we will maintain weigh and weight immediately with the aid of the use of weighing as a verb and weight as a noun, with a smattering of exceptions for records and grades and blankets. Our advice: take consolation wherein you may. Because of this, an item's mass may be measured indirectly through its weight, and so, for regular purposes, weighing (the usage of a weighing scale) is a completely suited manner of measuring mass. Further, stability measures mass in a roundabout way by way of comparing the load of the measured item to that of an item(s) of recognized mass.

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Answer:

Gamma rays

Explanation:

Answer:

.25 Hz

Explanation:

Period = 4 sec

freq = 1/p = 1/4 hz  = .25 Hz

Answer:

Explanation:

Weight of soccer ball

Weight of watermelon

As the watermelon has more weight, it will hit the ground first.

Answer:

Expect a broken leg or two, but you'll live, Some part of your body must absorb the impact, but head injury is the primary cause of death in falls.

Explanation:

Answer:

[tex]f_n_e_t=0[/tex]

Explanation:

[tex]f_1+f_2=f_n_e_t[/tex]

because there are two different forces in different directions (left: negative, right: positive, down: negative, up: positive) so 60N left will be negative, and 60N right will be positive:

[tex]60+(-60)=0[/tex]

when two same forces apllied then the net force is zero.

The electrical charge of a Pottasium ion that loses one electron is +1. Details about charge of an ion can be found below.

An ion is an electrically charged atom. This charge is formed as a result of the difference between the number of protons and electrons in that atom.

According to this question, a potassium atom forms an ion by losing one electron. This means there will be one more proton than electron in the element.

Therefore, the electrical charge of a pottasium ion that loses one electron is +1.

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When the effort force needed to lift an object using an ideal lever with a force advantage greater than 1,  The effort force is less than the lifting force. The correct option is b.

Force is the mechanical physical quantity. The force advantage is equivalent to the mechanical advantage equal to the ratio of output to the input force.

The force advantage is

F.A = lifting force / effort force

When the effort force is greater, FA is less than 1. When FA is greater than 1, definitely, the effort force is less.

Thus, the effort force is less than the lifting force. The correct option is b.

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We know the formula

So

if magnitude of charge is increased the force between them also increased.

And if the distance between them is decreased them also the force will be increased.

So Force increases

Answer: young's modulus

Explanation: A very rigid material—one that stretches or compresses only slightly under large forces—has a large value of young's modulus .

The image as shown here can here can be used to describe charging by induction.

A charge may be positive or negative. One of the methods of transferring a charge is by induction.

In this case, an objects induces an opposite charge on a material.  The image as shown here can here can be used to describe charging by induction.

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Answer:

friction

Explanation:

This object should not change its direction of motion because despite its velocity it will be still moving to the right.

The equation describe the velocity of an object and how this velocity changes depending on time.

The equation does not describe the direction of motion. Due to this, it is expected the direction is the same and does not change.

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[tex] \sf\huge{\underline{\underline{\overbrace{Answer}}}} [/tex]

The height of the hill is 5m.

Explanation:

⠀

Mass of the car (m) = 800kg

Height of the hill (h) = ?

Gravitational field strength (g) = 10N/kg

Potential energy (P.E.) = 40,000J

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The height of the hill

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The gravitational potential energy is the energy acquired by the object when the mass of the object is under the gravitational pull of the earth. It is directly proportional to mass and height of the object. If the mass or the height of the object increases the potential energy also increases.

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If we keep a book on the table and if we push the book from the table. This will result in the falling of the book on ground due to gravitational pull of the earth of it's mass and height.

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While formula to find potential energy is

⠀

[tex] \tt{\Large {P.E. = mg}}h[/tex]

But we need to find 'h'

so the formula for 'h' will be

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[tex] \bold{\Large {h = \frac{P.E. }{mg} }}[/tex]

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Now substituting the required values.

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[tex] \sf \hookrightarrow h = \frac{40000}{800 \times 10} \\ \\ \\ \sf \hookrightarrow h = \frac{40 \cancel 0 \cancel 0 \cancel 0}{8 \cancel 0 \cancel 0 \times \cancel{10}} \\ \\ \\ \sf \hookrightarrow h = \frac{ \cancel{ 40} \: \:{ \small{5}}}{ \cancel 8} \\ \\ \\ \boxed {\hookrightarrow h = 5m}[/tex]

Answer:

Velocity towards east = 20m/s

Distance in 2 min(120 sec) = 20 x 120= 2400m = 2km

Velocity towards west = 15m/s

Distance in 2 min(120 sec) = 15 x 120 = 1800m = 1.8km

Separation= 2+1.8 = 3.8km

Explanation:

Hope it helps you:))))))

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Based on the calculations, the acceleration of this wagon along the ground is equal to: D. 3.60 m/s².

Given the following data:

Mass = 10 kg.

Angle = 35°

Force = 44 Newton.

In accordance with Newton's Second Law of Motion, the net force acting on this wagon is equal to the horizontal component of the force that is parallel to the slope:

F = macosθ

Substituting the given parameters into the formula, we have;

44 = 10 × a × cos35

44 = 10a × 0.8192

44 = 8.192a

a = 44/8.192

a = 3.60 m/s²

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At high speeds, gas vibrates and moves freely. The liquid vibrates, moves about, and slides past one another. Solids vibrate (jiggle) but do not move from one location to another.

Answer:

Let β = v / c          

proper time Δt'  is measured in a frame at the same place in a given frame - the proper time is measured in spaceship II moving at .28 c

a) spaceship I is moving at (.6 - .28) c = .32 c relative to proper time

Δt = Δt' / (1 - β^2)^1/2      as measured by students in ship I

Δt = 50 / (1 - .32^2)^1/2 = 52.8 m        measured by students

b) Δt = 50 / (1 - .28^2)^1/2 = 52.1 min  time elapsed for observer on earth

Match each type of heat transfer method with its description.

Conduction | Convection | Radiation

Conduction ↪ occurs during physical contact between solid objects not in thermal equilibrium.

________________________________

Convection↪ relates to density differences within fluids.

________________________________

Radiation ↪does not require a medium or physical contact to transfer heat.

________________________________

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Answer:

Normal, Gravitational, Applied, Friction, and Tension

Explanation:

Because the sled is on the ground, or rather because it is on the earth, it will have a force of gravity, or its weight, pulling it down.

There is a normal force because the sled is not moving into the ground, so there needs to be a force pushing on the sled from the ground. Additionally, Newton's 3rd law states that for every action there is an equal but opposite reaction, if it's in equilibrium or not moving.

There will be an applied force since the child is pulling the sled and is applying a force to do so.

There will be a friction force that is pulling the sled opposite the direction it is moving, since it is on the ground that is presumably not fricitonless.

There will be a tension force pulling on the sled by the rope. However there is also a tension force pulling on the child's hand by the rope, meaning that these are internal forces and essentially balance out, but they are still there.

There is no air resistance force, or very little of it, since the object is not falling.

Answer:

D. they transfer thermal energy due to convection

In a building, air moves due to currents caused by temperature differences. They transfer thermal energy due to convection. this statement best describes these currents. Hence option D is correct.

Temperature is a physical quantity which measures hotness and coldness of a body. Temperature measures the degree of vibration of molecule in a body. Temperature is measured in centigrade (°C), Fahrenheit (°F) and Kelvin (K) in which Kelvin (K) is a SI unit of temperature. Absolute scale of temperature means Kelvin scale of temperature. relation between Kelvin(K) and centigrade (°C), °C= K - 273.15 from equation, 273.15 K means 0 °C, which is freezing point of water (ice). when we give temperature to the body, its molecule or atom absorbs thermal energy and vibrate about their mean position. Amplitude of vibration get increases as we go on increasing temperature and for higher temperature force of attraction between molecules gets weaker. Hence for higher temperature, due to weaken the force of attraction between molecule, solid goes into liquid state. and further increase in temperature liquid goes into gaseous state.

Hence option D is correct.

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The gravitational force is always equal to the mass times the acceleration due to the gravitational force:

 ⇒ In this case

Let's calculate:

 [tex]Gravitational_.Force = 1kg*9.8m/s^2=9.8N[/tex]

Answer: 9.8 N

Hope that helps!

Answer:

perturbateur ( le temps, le lieu, les personnages[description], la victime, l'enqueteur )

les peripeties

le denouement

Answer:

a is the correct answer

from the formula of wave length=v/f

therefore f= v/wave length

these implies f= 345/4.15 = 83.1hertz