Parachutists are hurt when jumping on the moon's surface,why?​

The angle at which the ray is reflected from the first interaction with the surface of the diamond is known as the angle of reflection. When a light ray hits a surface, it reflects back at the same angle as the angle of incidence.

What is the angle of incidence?

The angle between the incident ray and the normal ray is called the angle of incidence. The incident ray is the ray of light that falls on the surface, while the normal is an imaginary line perpendicular to the surface. The angle of incidence can be calculated by measuring the angle between the incident ray and the normal.

The angle between the reflected ray and the normal ray is known as the angle of reflection. When a light ray hits a surface, it reflects back at the same angle as the angle of incidence. Therefore, the angle of reflection can be calculated by measuring the angle between the reflected ray and the normal.

In summary, the angle at which the ray is reflected from the first interaction with the surface of the diamond is the angle of reflection, which is equal to the angle of incidence. Therefore, the ray is reflected at the same angle as the angle at which it strikes the diamond's surface.

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It attract when we touch another paper clip with your magnetized paper clip.

magnet, anything that can generate a magnetic field around itself and attract iron. By the end of the 19th century, every known element and several compounds had undergone magnetism tests, and it was discovered that every one of them possessed some magnetic properties. Iron, nickel, and cobalt are the only three elements that exhibit ferromagnetism.

Hysteresis, a lag in reaction to shifting forces due on energy losses from internal friction, is a property shared by all ferromagnetic materials. A loop of the kind illustrated in the accompanying figure is produced when B is measured for different values of H and the results are graphically shown. This loop is known as a hysteresis loop.

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Answer: The velocity with which the sand throw is 24.2 m/s.

Explanation:

Explanation:

acceleration due to gravity, a =  3.9 m/s2

height, h = 75 m

final velocity, v = 0

Let the initial  velocity at the time of throw is u.

Use third equation of motion

The velocity with which the sand throw is 24.2 m/s.

Earth's atmosphere is completely opaque to certain types of electromagnetic radiation in the ultraviolet, X-ray, and gamma ray regions of the spectrum. The ozone layer in the stratosphere absorbs most of the ultraviolet radiation from the Sun, while X-rays and gamma rays are completely blocked by the Earth's atmosphere.

The Earth's atmosphere is made up of various layers that contain different gases, water vapor, and other particles. These layers interact with electromagnetic radiation in different ways depending on the frequency or wavelength of the radiation. There are certain frequencies of electromagnetic radiation that cannot penetrate the Earth's atmosphere and are completely absorbed, reflected, or scattered back into space. The types of electromagnetic radiation that are completely opaque to the Earth's atmosphere are mainly in the ultraviolet, X-ray, and gamma ray regions of the spectrum.Ultraviolet radiation has wavelengths between 10 and 400 nanometers (nm) and is known to cause sunburns, skin cancer, and other harmful effects on living organisms. The Earth's ozone layer, which is found in the stratosphere layer between 10 and 50 km above the Earth's surface, absorbs most of the ultraviolet radiation from the Sun. However, the ozone layer is not completely effective in blocking all of the ultraviolet radiation, and some of it still reaches the Earth's surface. This is why it is important to wear sunscreen and protective clothing when spending time outdoors, especially during peak sunlight hours.X-rays and gamma rays have even shorter wavelengths than ultraviolet radiation and are highly energetic forms of electromagnetic radiation. They are produced by extremely hot and dense objects such as black holes, neutron stars, and supernova explosions. X-rays and gamma rays are completely absorbed by the Earth's atmosphere and do not reach the surface. This is fortunate for living organisms because these forms of radiation can cause severe damage to cells and tissues, leading to radiation sickness, cancer, and other health problems.

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fusion is when solid changes it's state to liquid

and vaporization is when liquid changes it's state to gas

so the difference between fusion and vaporization is the state

The approximate height of the balloon from the ground is calculated to be 28.98 m.

Based on the given information, you can draw a right triangle where the hypotenuse side is given as 30 m and the ground makes 75° with the hypotenuse.

Let x be the height of the balloon from the ground.

And α be the given angle.

sin α = opposite side / hypotenuse

The opposite side gives the height of the balloon from the ground.

So, sin 75° = x/30

0.966 = x/30

x = 28.98 m

Thus, the height of the balloon from the ground is calculated to be 28.98 m.

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Answer:

Explanation:

Answer : D that’s the answer

A freely falling observer  is equivalent to an inertial observer who experiences no acceleration according to the equivalence principle (option B)

The equivalence principle establishes that the gravitational force encountered in a localized region is indistinguishable from the pseudo-force perceived by an observer situated within a non-inertial (accelerated) frame of reference.

Consequently, an observer in free fall within a gravitational field undergoes no discernible acceleration, mirroring the experience of an inertial observer.

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Answer:

the answer is No, because he didn't respect Michelle's Privacy

Explanation:

No, because he was hoping to get Emily's approval by impressing her.

sorry this is late lol

Answer:

Kinetic energy = 5400000 J

Height, h = 45.91 m

Explanation:

It is given that,

Mass of the roller coaster train, m = 12,000 kg

Velocity of the train, v = 30 m/s

Kinetic energy is given by :

KE=\dfrac{1}{2}mv^2KE=

2

1

mv

2

KE=\dfrac{1}{2}\times 12000\ kg\times (30\ m/s)^2KE=

2

1

×12000 kg×(30 m/s)

2

KE=5400000\ JKE=5400000 J

So, the kinetic energy of the train at the top speed is 5400000 J.

For height

According to law of conservation of energy :

PEni+KE i=PE f+KE fPE i +KEi

=PEf +KE f

0+5400000\ J=mgh+00+5400000 J=mgh+0

5400000\ J=mgh5400000 J=mgh

h is the height.

5400000\ J=12000\ kg\times 9.8\ m/s^2\times h5400000 J=12000 kg×9.8 m/s

2

×h

h=45.91\ mh=45.91 m

Hence, this is the required solution.

Answer:

oxygen concentration

Explanation:

Answer:

iron,Cobalt and nickel

One of the main causes of fatalities in the commercial aviation sector is loss of airplane control while in flight. There are numerous causes of upsets in airplanes, but none of them are statistically significant.

Eliminating one cause of upsets won't definitely result in fewer fatalities and accidents involving loss of control. Reducing the number of upset causes requires ongoing training. Additionally, many environmental factors that cause upsets can't always be avoided, which makes avoidance the best course of action. Therefore, in order to recover an upset airplane, pilots must possess the requisite knowledge and abilities.

All makers of big, swept-wing commercial jet aircraft use the same aerodynamic concepts.

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According to the question The horizontal velocity of the body is greatest in value at mid-stance for running. the correct option is C

Walking and running are two different ways of travelling by foot, but there are some key differences between them. Running entails a period of time when both feet are in the air and a period of time when both feet are in contact with the ground. When one foot is in contact with the ground, walking always has at least one foot in contact with the ground, whereas running requires both feet to be off the ground for a portion of the stride cycle. These differences affect the way that force is applied to the body, particularly the legs and feet.

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To find a coterminal angle, we need to add or subtract multiples of 360° from the given angle, Measures of angles can be given by 95° – (1,450n)°, for any integer n, 95° – (1,080n)°, for any integer n, 95° – (780n)°, for any integer n, 95° – (340n)°, for any integer n

The question asks about an angle that is coterminal with a 95° angle. Coterminal angles are angles that have the same initial and terminal sides but differ by a multiple of 360°.

In this case, 95°, we can use any of the options to find coterminal angles.For example, if we choose the option 95° – (1,080n)°, the resulting angles will be coterminal with 95°. By substituting different values of n, we can obtain different coterminal angles such as 985°, -95°, -1,175°, etc

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The force required to accelerate the carton is equal to the mass times the acceleration.

Acceleration is a change in the velocity or speed of an object over a given period of time.It is the rate of change of an object's velocity,or the rate of change of its speed in paticular direction.

Therefore, the force required to accelerate the carton is equal to 8.0 kg x 5.0 m/s2 = 40 Newtons. This is the same as the weight of the carton multiplied by the acceleration. The force exerted by Abram must be equal to, or greater than, 40 Newtons in order to accelerate the carton.

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Answer:

60.18 N

Explanation:

Given that:

The force applied on the sled = 100 N

Suppose, the angle between the sled rope and the ground = 53°

The horizontal force which acts  in the horizontal direction can be expressed as:

\(F_x = F \ cos \theta\)

\(F_x = 100 \ cos (53)\)

\(F_x = 60.18 \ N\)

But if the angle between the sled rope is parallel to the ground. Then, we use an angle on a straight line which is = 180°

\(F_x = F \ cos \theta\)

\(F_x = 100 \ cos (180)\)

= 100 × -1

= -100 N

Answer:

Substance 1 because it became a liquid faster

Explanation:

Answer:

\(20 + 10 = 30 \\ 30and50 in \: parallel \\ = \frac{50 \times 30}{50 + 30} \\ = \frac{1500}{80} \\ 18.75 \\ 30nd40parallel \\ \frac{30 \times 40}{70} \\ \frac{1200}{70} = 17.143 \\ total = 18.75 + 17.143 = 35.893ohm \\ thank \: u\)

Answer:

\(20 + 10 = 30 \\ \\ \frac{50 \times 30}{50 + 30} \\ \\ \frac{1500}{80} \\ \\ = 18.45 \\ \\ = second \: \\ \\ \frac{30 \times 70}{70} \\ \\ \frac{1200}{70} \\ \\ = 17.143 \\ \\ total = 18.45 + 17.143 \\ \\ = 35.830hm\)

A manufacturer supplies plastic cups that are placed under the legs of the chair. The manufacturer's claim is that there will be no marks of chair due to pushing or pulling on the floor.

A manufacturer is a person who converts his idea of developing and constructing any item using some set of machines.

A manufacturer supplies plastic cups that are placed under the legs of the chair.

When there is a relative motion between two objects, friction force causes the opposition to this motion. Between chair and floor, there will be high magnitude of force. But if we insert plastic cups in the legs of chair, then the friction between cup and floor will be less. This keeps the floor protected form any scratches.

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Explanation:

You walk 53m to the north, then you turn 60° to your right and walk another 45m. Determine the direction of your displacement vector. Express your answer as an angle relative to east.

MTTF or Mean Time to Failure can be calculated using the given data. The term MTTF is often used to describe the expected lifetime of electronic devices and other items.

Here is how to calculate MTTF when given data:(c) Life testing was made on six non-replaceable) electrical lamps and the following results were obtained.

Calculate MTTF.The following data has been given:Number of lamps, n = 6Total time, T = 10000 hoursFailures, f = 2MTTF formula is given as:MTTF = T / n * fWhere, T = total time during which the test was conducted.n = the number of items tested.f = the number of items failed.Using the given data, we can calculate the value of MTTF as follows:MTTF = T / n * f = 10000 / 6 * 2= 1666.67 hoursTherefore, the MTTF of the six non-replaceable electrical lamps is 1666.67 hours.

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Answer:

kinetic

Explanation:

since it's energy possessed by a moving body/object.

The largest compartment for carbon in Earth's system is the deep ocean, specifically the deep-sea sediments.

These sediments contain vast amounts of organic and inorganic carbon that has accumulated over millions of years.

The amount of carbon stored in these sediments is estimated to be on the order of 40,000 billion metric tons, which is several times more than the amount of carbon stored in the atmosphere, land plants, and soils combined.

The deep ocean plays an important role in the global carbon cycle, as it serves as a long-term storage reservoir for carbon and helps to regulate the concentration of carbon dioxide in the atmosphere over long timescales.

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To calculate the depth of the sea using the given information, we need to consider the speed of the wave and the time it takes for the wave to travel down to the sea bed and back.

The time taken for the wave to travel down to the sea bed and back is twice the time it takes for the reflected wave to be received. In this case, the reflected wave is received after 0.5 seconds, so the total round trip time is 2 * 0.5 seconds = 1 second.

Now, we need to determine the speed of the wave. The speed of a wave can be calculated using the formula:

\(Speed = \frac{Distance}{Time}\)

In this case, the distance is twice the depth of the sea because the wave travels down to the sea bed and then back up to the surface. Therefore, we have:

\(Speed = \frac{2 \times Depth}{Time}\)

Rearranging the formula to solve for the depth, we get:

\(Depth = \frac{Speed \times Time}{2}\)

Since we are not given the speed of the wave, we cannot calculate the exact depth. The speed of the wave will depend on the properties of the medium through which it is traveling (such as water) and may need to be provided in the question.

Once the speed is known, we can substitute it into the formula along with the given time of 1 second to calculate the depth of the sea. Without the speed value, we cannot determine the exact depth.

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Answer:

C. A baseball bat strikes a baseball.

Explanation:

Newton's second law of motion states that acceleration happens when force is applied on the mass.

A baseball bat strikes a baseball is the best example of Newton's second law of motion because acceleration of the baseball is directly proportional to the force by which baseball bat hit it.

Hence, the correct option is 'C. A baseball bat strikes a baseball.'

Answer:

Baseball bla

Explanation:

yes