recent evidence shows that comets are rich in both water and in the organic (carbon-based) compounds necessary for life as we know it. what are some possible implications of this finding? does this imply that cometary impacts were important for the development of life on earth? does it imply that life is widespread through our solar system (and by extension through our universe)? explain.

The answer is: Reflected

Explanation:

An image is a copy of an object that is formed by reflected (or refracted) light. Regular reflection occurs when light reflects off a very smooth surface and forms a clear image. Diffuse reflection occurs when light reflects off a rough surface and forms a blurry image or no image at all.

Answer:

dₓ = 1.35 m

dy = 1.86 m

Explanation:

In order to find the vertical and horizontal components of the displacement, we can assume a right triangle. Such that, the length of string is the hypotenuse, making and angle of 54° with the base of triangle. The base is the horizontal component of displacement. And the perpendicular is the vertical component of displacement. Therefore:

\(d_{x} = d\ Cos\ \theta\)

where,

dₓ = horizontal component of displacement = ?

d = resultant displacement = 2.3 m

θ = angle between displacement and ground = 54°

Therefore,

\(d_{x} = (2.3\ m)\ Cos\ 54^0\)

dₓ = 1.35 m

For vertical component of displacement:

\(d_{y} = d\ Sin\ \theta\\d_{y} = (2.3\ m)\ Sin\ 54^0\)

dy = 1.86 m

Answer:

4,524,660 N

Explanation:

Assuming the submarine's density is uniform, 1/9th of the submarine's mass is equal to the mass of the displaced water.

m/9 = (1026 kg/m³) (50 m³)

m = 461,700 kg

mg = 4,524,660 N

Answer:

The fountain is 3.43 m high.

Explanation:

Circumference of the pool = 15 m.

C = 2\(\pi\)r

where C is the circumference and r its radius.

r = \(\frac{C}{2\pi }\)

 = \(\frac{15}{2(\frac{22}{7}) }\)

r = 2.3864

radius of the pool = 2.40 m

So that the height of the fountain, h, can be determined by applying trigonometric function.

Tan θ = \(\frac{opposite}{adjacent}\)

Tan 55 = \(\frac{h}{2.4}\)

h = Tan 55 x 2.4

  = 1.4282 x 2.4

  = 3.4277

h = 3.43 m

The height of the fountain is 3.43 m.

Answer:

C. Move the magnetized nail back and forth within the wire coil to induce an electric current in the wire.

Hope this helps.

According to Gordon Allport, the type of personality traits that are the most dominant is the central trait or the basic trait.

This refers to a distinctive quality or character of a person. For example curiosity, fair, and dark. etc.

Gordon Allport is a psychologist and personality theorist. He divided personality traits into three categories: cardinal, central, and secondary. According to Allport, the most dominant type of personality trait is the central trait, also called as the "basic trait."

These traits are fundamental to a person's character and shape their overall personalities, such as honesty, kindness, and intelligence. Cardinal traits, on the other hand, are rare and extremely influential traits that shape a person's entire life and behavior, such as religious devotion or political ideology. Secondary traits are less important and more specific, such as being punctual or having a sense of humor.

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Answer:

About 50 ft.

Explanation:

There is a danger any time you take your eyes off the road. There is also a danger of distraction before and after a sneeze.

Hoped this helped!! <3

Answer:

The air escapes

Explanation:

Without the cap to stop the pressure of the air it gets out and the tire flattens to a point of near impossible riding

It must be either speeding up, or slowing down, or turning. There are no other possibilities.

Answer:

When a solid reaches the temperature of its melting point, it can become a liquid. For water, the temperature needs to be a little over zero degrees Celsius (0oC) for you to melt.

Explanation:

Answer:

As the Earth rotates, the Moon rises just as the Sun sets, but just on that one day of the month. In the days before a full Moon, if you look in the eastern sky, you can find the almost full Moon rising before the sun sets. We can see the moon during the day for the same reason we see the moon at night. The surface of the moon is reflecting the sun's light into our eyes

Explanation:

Hope this helps!

-Liyah<3

The given statement that when resonance occurs, there is a dramatic decrease in the amplitude of a sound wave is false.

Resonance happens when a sound wave's frequency coincides with an object's inherent frequency, increasing the sound wave's amplitude.

Standing waves may develop in the tube as a result of resonance, which amplifies the vibrations' amplitude. The resonant frequencies depend on how long the air column is. The resonating air column amplifies solely the natural frequencies, as opposed to the mouth or reed which produce a combination of diverse frequencies.

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The average velocity of the object over the given intervals can be calculated using the position function s(t) = \(-18t^{2}\) + 54t. The average velocities are as follows: (a) -144, (b) -126, (c) -108, and (d) -18h + 36.

The average velocity of an object can be found by calculating the change in position divided by the change in time. In this case, we are given the position function s(t) = \(-18t^{2}\) + 54t.

(a) For the interval [1,10], the change in time is 10 - 1 = 9. To find the change in position, we evaluate s(10) - s(1):

s(10) = \(-18(10)^{2}\) + 54(10) = -1800 + 540 = -1260

s(1) = \(-18(1)^{2}\) + 54(1) = -18 + 54 = 36

Change in position = -1260 - 36 = -1296

Average velocity = Change in position / Change in time = -1296 / 9 = -144.

(b) For the interval [1,9], the change in time is 9 - 1 = 8. To find the change in position, we evaluate s(9) - s(1):

s(9) = -18(9)^2 + 54(9) = -1458 + 486 = -972

Change in position = -972 - 36 = -1008

Average velocity = Change in position / Change in time = -1008 / 8 = -126.

(c) For the interval [1,8], the change in time is 8 - 1 = 7. To find the change in position, we evaluate s(8) - s(1):

s(8) = \(-18(8)^{2}\) + 54(8) = -1152 + 432 = -720

Change in position = -720 - 36 = -756

Average velocity = Change in position / Change in time = -756 / 7 = -108.

(d) For the interval [1,1+h], the change in time is (1+h) - 1 = h. To find the change in position, we evaluate s(1+h) - s(1):

s(1+h) = \(-18(1+h)^{2}\) + 54(1+h) = -18(1 + 2h + h^2) + 54(1 + h) = -18 - 36h - \(18h^{2}\) + 54 + 54h = 36h - \(18h^{2}\) + 36

s(1) = \(-18(1)^{2}\) + 54(1) = -18 + 54 = 36

Change in position = (36h - \(18h^{2}\) + 36) - 36 = 36h - \(18h^{2}\)

Average velocity = Change in position / Change in time = (36h - \(18h^{2}\)) / h = 36 - 18h.

Therefore, the average velocities for the given intervals are (a) -144, (b) -126, (c) -108, and (d) 36 - 18h.

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Answer: the answer is true :-)

Explanation:

The following relationship between impulse and momentum enables for the proper outcome to be determined: The average force Impulse falls as impact time increases.

The impulse, which is connected to the fluctuation in the quantity of movement, is calculated by multiplying the applied force by the time interval. I=F dt =p =m v f - m v0

When I is the impulse, F is the applied force, t is the time, p is the momentum, m is the mass, and v is the body's velocity, all of which are vectors. When the body stops, its speed is zero, and the height of the body affects how quickly it strikes the foam bed. A certain amount of force must be applied in order for someone to be hurt.

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The correct answer is the 3rd answer, gravity would increase its pull on the small object

hope this helps! :)

The scientific theory cannot be accepted immediately, because there is always the possibility of discovering new information or modification.

A scientific theory is an explanation of the natural world and universe that has been repeatedly tested in accordance with the scientific method. Theories are tested under controlled conditions in an experiment and are evaluated through principles of abductive reasoning.

A scientific theory differs from scientific law in that a theory explains how or why is a basic observation, whereas a law is a statement about a relationship between facts. Newton’s Law of Gravity is a mathematical equation that can be used to find the attraction between objects, but it is not a theory to describe how gravity works.

If experimental results contrary to predictions of the theory are observed, scientists evaluate whether the experimental design was good and confirm the results by independent replication.

Solutions may need some changes to the theory, or none at all, and after the successive modifications, theories consistently improve and greater accuracy is achieved.

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The factor that does not reduce the efficiency of energy transfer between trophic levels is option C, biomass stored as fat or starch.

The efficiency of energy transfer between trophic levels is reduced due to various factors, including heat loss due to maintaining homeostasis, indigestibility of some biomass, and lack of availability of some biomass. When organisms use the energy they obtain from food to maintain their body temperature, perform physical activities, and carry out various metabolic processes, a significant amount of energy is lost as heat, reducing the efficiency of energy transfer to the next trophic level.

Similarly, some biomass is indigestible, such as cellulose in plant cell walls, and is not converted into usable energy by consumers. This reduces the efficiency of energy transfer to the next trophic level. Additionally, some biomass may not be available to certain consumers due to competition, predation, or other factors, further reducing the efficiency of energy transfer.

However, the storage of biomass as fat or starch does not reduce the efficiency of energy transfer between trophic levels. In fact, it can increase the efficiency of energy transfer by allowing organisms to store excess energy for later use.

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The coefficient of friction can be calculated by dividing a distance by a distance, which results in a dimensionless quantity.

The coefficient of friction is a dimensionless quantity, so it does not have any SI units. It represents the ratio of the force required to overcome the frictional force between two surfaces in contact, and it is expressed as a pure number without units.

In the given equation, the height of the meter stick is measured in meters (m) and the base of the meter stick is also measured in meters (m). Therefore, the coefficient of friction can be calculated by dividing a distance by a distance, which results in a dimensionless quantity.

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The ratio of the ideal projectile distance on the moon to the same projectile distance on earth, moon/back, is approximately (the acceleration of gravity on the moon is 1.62 m/s², about one-sixth of the acceleration due to gravity on earth. for a given initial velocity v0  , and the specified launch angle θ0) is ⅙ (option B)

The initial velocity, launch angle, and acceleration due to gravity all affect a projectile's range. The formula for an ideal projectile's range is as follows:

R = v0²sin (2θ0) / g

Where,

v0 = the initial velocity (m/s)

θ0 = the launch angle

g = the acceleration due to gravity

The acceleration caused by gravity is 1.62 m/s² for the moon and 9.8 m/s² for the earth. Ranges on the moon and ranges on earth can be expressed as follows:

R moon / R earth = (1.62 sin (2θ0)) / g

sin (2θ0) = 1.62 / 9.8

Approximately ⅙

Consequently, an ideal projectile's range on the moon is around a sixth of its range on Earth.

The question is incomplete, it should be:

The acceleration due to gravity on the moon is 1.62 m/s², approximately a sixth of the value on earth. for a given initial velocity v0, and a given launch angle θ0, the ratio of the range of an ideal projectile on the moon to the range of the same projectile on earth, rmoon/rearth, will be approximately?

A. ⅓

B. ⅙

C. 1

D. 1/12

E. ⅕

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A person standing on the roof of a building drops a 0. 125 Kg ball on the ground. A child on eight floor saw the ball passing with a speed of 33. 1 m/s. There are total eight floor in the building and he kinetic energy of the ball just before it hit the ground was 62.0 J.

To determine the total number of floors in the building, we can first calculate the distance the ball traveled before the child on the eighth floor saw it. We know that the ball was dropped from rest and the speed at which it was observed on the eighth floor was 33.1 m/s. We can use the equation for free fall:

\(h = (1/2)gt^2\)

Where h is the distance fallen, g is the acceleration due to gravity (9.8 m/s^2), and t is the time taken to fall. Rearranging the equation to solve for t, we get:

\(t = sqrt(2h/g)\)

Plugging in the height of the eighth floor (8 x 8 = 64 m), we get t = 3.2 s. This is the time taken for the ball to fall from the roof to the eighth floor.

To determine the total number of floors, we can use the height of the first floor (12 m) and the time taken for the ball to reach the ground from the eighth floor (t = 3.2 s). The distance traveled in this time can be found using the equation for constant acceleration:

\(d = vt + (1/2)at^2\)

Where d is the distance traveled, v is the initial velocity (which is zero in this case), a is the acceleration due to gravity (-9.8 m/s^2), and t is the time taken. Plugging in the values, we get:

d = 12 + 8(n-1) = 12 + 8n - 8 = 8n + 4

(Where n is the number of floors between the first and eighth floor)

Setting this equal to the distance traveled by the ball in 3.2 s (64 m), we get:

8n + 4 = 64

Solving for n, we get n = 7.5. Since we cannot have a fraction of a floor, we can round up to 8 floors. Therefore, the total number of floors in the building is 8.

To determine the speed of the ball just before it hit the ground, we can use the equation for free fall:

\(v^2 = u^2 + 2gh\)

Where v is the final velocity (which we want to find), u is the initial velocity (which is zero), g is the acceleration due to gravity (9.8 m/s^2), and h is the height from which the ball was dropped (which we assume to be the height of the building). Plugging in the values, we get:

v = sqrt(2gh) = sqrt(2 x 9.8 x 8 x 8) = 31.4 m/s

Therefore, the ball was falling at a speed of 31.4 m/s just before it hit the ground.

To determine the kinetic energy of the ball just before it hit the ground, we can use the equation:

\(KE = (1/2)mv^2\)

Where KE is the kinetic energy, m is the mass of the ball (0.125 kg), and v is the speed just before it hit the ground (31.4 m/s). Plugging in the values, we get:

\(KE = (1/2) x 0.125 x 31.4^2 = 62.0 J\)

Therefore, the kinetic energy of the ball just before it hit the ground was 62.0 J.

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Muchas personas sienten seguridad en el dinero porque con el mismo puede tener un mator control de su vida en general.

Hay varias razones por las que algunas personas pueden sentir seguridad en el dinero:

En resumen, la seguridad que el dinero puede proporcionar está relacionada con la capacidad de satisfacer las necesidades básicas, hacer frente a situaciones de emergencia y planificar el futuro.

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Answer:

here given is a weight

then force becomes mg

that is F=Mg

=4*9.8

then by using the formula

F=Ma

a=F/M

=4*9.8/9.8

=4

Explanation:

Using newtons second law

\(\\ \bull\sf\dashrightarrow Force=Mass\times Acceleration\)

\(\\ \bull\sf\dashrightarrow Acceleration=\dfrac{Force}{Mass}\)

\(\\ \bull\sf\dashrightarrow Acceleration=\dfrac{9.8}{4}\(

\(\\ \bull\sf\dashrightarrow Acceleration=2.45m/s^2\)

The initial speed of a shopping cart is 36 m/s.

What is acceleration?

Acceleration is the term used to describe how quickly a velocity's speed and direction change over time. It is said to have been accelerated when something changes its direction and moves faster or slower. Motion on a circle accelerates even when the speed is constant because the direction is constantly changing.

What is kinematic equation?

The set of equations known as the kinematic equations describes how an object moves with constant acceleration. Integrals, rates of change, and derivatives must be understood in order to solve kinematic equations.

List the known and unknown values.

u = initial velocity = 20 m/s

v = final velocity = ? m/s

a = acceleration = 4 m/s²

t = time interval = 4 s

s = displacement = ? m

The following kinematic equation should be used to determine the final velocity.

v = u + at

v = 20 m/s + (4 m/s² × 4 s) = 36 m/s

Now calculate the displacement using the following kinematic equation.

s = ut + ½at²

s = (20 m/s × 4 s) + (0.5 × 4 m/s² × (4 s)²)

s = 80 m + 32 m = 112 m

Therefore, the initial speed of a shopping cart is 36 m/s.

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Answer:

I think its the second law..

Explanation:

Answer:

its the second law.

hope this helps! :)

Energy is a very essential aspect of our daily life, which refers to the capacity to do work. It is the ability to bring about a change in some physical body or the other. Energy takes various forms, and they can be classified into two main groups, i.e., kinetic and potential energy.

Energy is commonly defined as the ability to do work. Work is a force acting over a distance, so energy is always related to work. Energy is expressed in units of work, such as joules (J), which are the same as newton-meters (N·m).Kinetic energy is energy in motion. Potential energy is stored energy, and neither of them can be measured. There are various types of energy, such as heat energy, light energy, sound energy, electrical energy, mechanical energy, nuclear energy, and chemical energy. Heat energy is the energy of moving particles in matter. It flows from hotter objects to colder objects and can be measured in joules. Light energy is the energy that travels in waves and can be seen by the eye. It is also measured in joules.

Sound energy is the energy of vibrating matter and can be heard by the ear. It is measured in decibels (dB).Electrical energy is the energy of moving charges and is used in electronics, lighting, and motors. It is measured in kilowatt-hours (kWh). Mechanical energy is the energy of moving objects, such as gears and pulleys, and is measured in joules. Nuclear energy is the energy stored in the nucleus of an atom and can be released in nuclear reactions. It is measured in electron volts (eV). Chemical energy is the energy stored in chemical bonds and is released in chemical reactions. It is measured in joules (J).

Thus, we can say that energy is the capacity to do work. It takes various forms such as heat energy, light energy, sound energy, electrical energy, mechanical energy, nuclear energy, and chemical energy. Kinetic energy is energy in motion. Potential energy is stored energy, and neither of them can be measured.

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Answer:

130 N basically

Explanation:

400N  magnitude of the friction acting on the crate.

work done by gravity

\([w=mg sin \theta \cdotS],[w=mgh=],[w=800 \cdot2=w=1600]\)

Then was done by friction  external work - wask done by gravity

\([f_S \cdot S=3200-1600],[f_S \cdot4=1600],[f_S=400 N]\)

Thus the crate is not moving with constant speed then we can say that the value of friction Force is less then 400 N

So Friction Force is not zero but less then the 400N

The resistance present at the contact surface at the point of contact when two or more objects move over one another can be referred to as friction force. The direction of friction force is always perpendicular to the object's motion.

The amount of friction is influenced by the surface's roughness and outside pressures. The force of friction works more strongly on a surface the rougher it is. The same is true of outside factors.

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Answer:

its D

Explanation:

i just got it correct on a. p. e. x. :)