If a comet is an icy, dusty body, why does it appear brightly in the night sky? (check all that apply.)

Answer:

E=2.58155844×10^-29

Explanation:

we use this formula

E= hc/ lambda

E= [(6.626×10^-34)( 3×10^8)]/(7.7×10^-3)

E=2.58155844×10^-29

Answer:

6m/s²

Explanation:

Given parameters:

Initial velocity  = 4m/s

Time  = 3s

Final velocity  = 22m/s

Unknown:

Average acceleration  = ?

Solution:

Acceleration is the rate of change of velocity with time taken.

    Acceleration  = \(\frac{Final velocity - Initial velocity }{Time}\)  

Acceleration  = \(\frac{22 - 4}{3}\)    = 6m/s²

Answer:

With all of that information, he's telling us the train's VELOCITY.

Explanation:

Velocity is a vector quantity made of two parts: speed and direction.

When light passes through one transparent medium to another transperent medium it bends and that beding of light is know as refraction of light !

The relationship between the opposing forces up until and including the point of the maximum static frictional force can be described as being equal and opposite.

This is because the maximum static frictional force is the point at which the applied force is equal and opposite to the frictional force. At this point, the opposing forces are balanced, meaning that the object remains at rest and does not move.

However, if the applied force exceeds the maximum static frictional force, the object will start to move, and the relationship between the opposing forces will shift to one where the applied force becomes greater than the frictional force.

Up until the point of the maximum static frictional force, the opposing forces are equal and opposite, but beyond this point, the applied force becomes greater than the frictional force.

To know more about frictional force, refer

https://brainly.com/question/24386803

#SPJ11

Answer:

An article written by a scientist .

Explanation:

Primary sources information are those that contain first  hand information probably from the place of the activities or by the original contact of the information (source ) .

So primary information is normally contained in artifact , journals , letter , dissertations manuscripts  , videos and audio recordings .

The fact that the article is written by the scientist means he is the one who has the original information hence he is the first person to access the information , meaning he is the original owner .

About 400.00 Meters per second.

(Think i may have gotten my decimal in the wrong place. If not then 4)

Answer:

14.40 km/h (kilometers per hour)

240.00 m/min (meters per minute)

Best answer: 4.00 m/s (meters per second)

Explanation:

Answer:

I believe it would be the first one "The student is moving relative to the cars window bunt not to the traffic light".

Explanation:

be cause he would be in the car so he would be moving with the car

The orbital speed of the material in the solar nebula at a distance of 28,000 AU from the Sun (before the collapse of the nebula) was approximately 9.938 × 10⁻⁶ rad/s.

The law of conservation of angular momentum states that the product of an object's moment of inertia and its angular velocity remains constant as long as no external torques act on it. In the case of a collapsing solar nebula, we can use this principle to determine the orbital speed of the material at a given distance from the Sun.

Given:

Orbital speed at Pluto's average distance from the Sun = 5 km/s

Pluto's average distance from the Sun = 39.5 AU (1 AU = average distance from the Earth to the Sun)

Distance from the Sun before the collapse of the nebula = 28,000 AU

To apply the law of conservation of angular momentum, we can write:

moment of inertia * angular velocity = constant

The moment of inertia (I) for a point mass rotating about an axis is given by:

I = m * r²

where m is the mass of the object and r is the distance from the axis of rotation.

At Pluto's average distance from the Sun (39.5 AU), the moment of inertia is given by:

I1 = m * r₁²

At a distance of 28,000 AU, the moment of inertia is given by:

I2 = m * r₂²

According to the conservation of angular momentum, I1 * ω₁ = I2 * ω₂, where ω represents the angular velocity.

To find the ratio of the angular velocities, we divide both sides of the equation by I2:

(ω₁ * I1) / I2 = ω₂

Since the mass (m) cancels out, we can substitute the expressions for I1 and I2:

(ω₁ * r₁²) / r₂² = ω₂

We can now substitute the known values into the equation:

(5 km/s * (39.5 AU)²) / (28,000 AU)² = ω₂

Simplifying the equation:

(5 km/s * (39.5)²) / (28,000)² = ω₂

Calculating the right-hand side of the equation:

(5 km/s * 1560.25) / 784000000 = ω₂

Simplifying further:

(7801.25 km/s) / 784000000 = ω₂

Finally, calculating ω₂:

ω₂ ≈ 9.938 × 10⁻⁶ rad/s

Learn more about momentum here:

https://brainly.com/question/30677308

#SPJ11

Explanation:

D.

hope it's help

hi I'm new user

Answer:

D.

Explanation:

The answer should be D. Cause it makes more sense and the gamma decay process it goes from Unstable to stable.

I apologize if it is incorrect-
I hope it helps! Have a great day!

Anygays-

The original displacement of the boat in seawater in km is 7.42 x  10⁻⁵ km.

The shortest path traveled by any particle during its motion.

A boat going from salt water to fresh water sinks 7. 82cm. After burning coal, the boat rises up by 15. 24cm.

Displacement = 15.24 -7.82 = 7.42 cm

1cm = 10⁻⁵ km

So, 7.42 cm =7.42 x  10⁻⁵ km

Thus, the original displacement is 7.42 x  10⁻⁵ km.

Learn more about displacement.

https://brainly.com/question/11934397

#SPJ4

A 1Msun star in a closed binary system with a 2Msun star.

Systems in which the two stars are close to each other are called close binary star system.

The most massive stars have the shortest lifespans. The reason is that they have most fuel, they burn it so enormously that their lifetimes are very short. As a 1Msun star in a closed binary system with a 2Msun star becomes the massive star so it has the shortest life expectancy.

a. No, an isolated 1Msun star has not the shortest life expectancy.

b. No, a 1Msun star in a closed binary system with a 0.8Msun star has not the shortest life expectancy.

c. Yes, A 1Msun star in a closed binary system with a 2Msun star has the shortest life expectancy.

Learn more about star from:

https://brainly.com/question/21521087

#SPJ4

Answer:

inches and feet (or even centameters)

Explanation:

these are all common units used to measure height

Neglecting energy loss to the environment while determining the specific heat capacity of water will cause the estimate of its value to be too high.

The specific heat capacity of a substance is defined as the amount of heat required to raise the temperature of one unit mass of the substance by one degree Celsius (or one Kelvin) without any change in its state. When we measure the specific heat capacity of water, we typically use a calorimeter, which is an insulated container that prevents heat exchange between the water and its surroundings. This ensures that all the heat added to the water goes into raising its temperature, and none of it is lost to the environment.

If we neglect energy loss to the environment, we assume that all the heat added to the water goes into raising its temperature, which is not entirely accurate. In reality, there will always be some heat loss to the surroundings due to factors such as radiation, convection, and conduction. Since we are assuming that there is no heat loss, we will end up with an overestimate of the specific heat capacity of water.

To know more about energy

https://brainly.com/question/13739937

#SPJ1

Yes, there will be an induced voltage across the coil.

When the axis of the magnet is turned perpendicular to the axis of the coil and the magnet is brought down onto the coil, the magnetic field lines of the magnet cut through the coil. This cutting of magnetic field lines induces a voltage in the coil. This phenomenon is known as electromagnetic induction.

When the magnet's axis is turned perpendicular to the axis of the coil and brought down onto the coil, the magnetic field lines of the magnet will intersect with the turns of the coil. This change in the magnetic field will generate an electromotive force (EMF) in the coil according to Faraday's law of electromagnetic induction. As a result, an induced voltage will be present across the coil.

Conclusion: By turning the axis of the magnet perpendicular to the axis of the coil and bringing the magnet down onto the coil, an induced voltage is generated across the coil due to the change in the magnetic field and Faraday's law of electromagnetic induction.

To know more about voltage, visit;

https://brainly.com/question/1176850

#SPJ11

Answer: Weak nuclear forces are involved when certain types of atoms break down. Strong nuclear forces are responsible for holding atoms' nucleus together.

Answer:

-0.34m/s

Explanation

According to the law of conservation of momentum

m1u1 +m2 u2 = (m1+m2)v

m1 and m2 are the masses

u1 and u2 are the initial velocities

v s the common velocity

Given

m1 = 1.5kg

m2 = 5.2kg

u1 = 2.3m/s

u2 = -1.1m/s (left direction)

Required

Final velocity v of the ball

Substitute into the formula

1.5(2.3)-5.2(1.1) = (1.5+5.2)v

3.46-5.72 = 6.7v

-2.26 = 6.7v

v = -2.26/6.7

v = -0.34m/s

Hence the final velocity of the bowling ball is 0.34m/s towards the left

1. The probability that the gene would appear in a gamete = 7 and there are 100 people in a population with genotype tt.

Thus, all of the 100 people will contribute a talleles to the gene pool. So, the total number of alleles in the gene pool will be 200.2. The percentage of the population that is more resistant to malaria because they are heterozygous (AS) for the sickle cell gene = 49%.

This is because the frequency of the sickle cell trait in the population = 41%. Thus, the frequency of the normal (AA) genotype = (1-0.41) = 0.59.Using the Hardy-Weinberg equation: p² + 2pq + q² = 1

Where p = frequency of A allele, and q = frequency of S allelep² = frequency of AA genotype, 2pq = frequency of AS genotype, q² = frequency of SS genotype

Frequency of AS genotype = 2pq = 2 × 0.41 × 0.59 = 0.4849 or 48.49%3a. The type of genetic drift that would best describe this scenario is "bottleneck effect."

b. Assuming the frequency of the Huntington allele does not change as the population grows to 100,000, the number of individuals likely to have Huntington's disease on the island would be:

q = frequency of the Huntington allele = 0.1p = frequency of the normal allele = 0.9

Number of heterozygous individuals (2pq) = 2 × 0.1 × 0.9 × 100,000 = 18,000

Number of individuals with Huntington's disease (q²) = 0.1² × 100,000 = 1,0004a. The allele frequencies for T = 0.6628, and for t = 0.3372.

b. Observed genotype frequencies:TT = 215/391 = 0.5501Tt = 99/391 = 0.2532tt = 77/391 = 0.1967

c. The expected genotype frequencies based on Hardy-Weinberg equilibrium can be calculated using the following equations:p² + 2pq + q² = 1p + q = 1

where p is the frequency of T allele and q is the frequency of t allele.

The frequency of the T allele = (2 × 215 + 99) / (2 × 391) = 0.6766

The frequency of the t allele = 1 - 0.6766 = 0.3234

The expected genotype frequencies are:TT = p² = 0.6766² = 0.4581Tt = 2pq = 2 × 0.6766 × 0.3234 = 0.4388tt = q² = 0.3234² = 0.1031d. To determine if the observed values are significantly different from the expected values, we can use chi-square analysis.

Calculated chi-square value = Σ ((Observed - Expected)² / Expected)= (213 - 174.23)² / 174.23 + (99 - 120.56)² / 120.56 + (77 - 46.21)² / 46.21= 13.32

The degrees of freedom are (n-1) = 3-1 = 2

From chi-square distribution table, with 2 degrees of freedom at 0.05 level of significance, the critical value is 5.99Since 13.32 > 5.99, the observed values are significantly different from the expected values. Therefore, we reject the null hypothesis.

Learn more about Hardy-Weinberg equation: https://brainly.com/question/5028378

#SPJ11

a) The ratio of the electric charge on each conductor to the potential difference (i.e., voltage) between them is used to express capacitance.

b) The area of the plates, the spacing between them, and the type of insulating material or dielectric between them are the three variables that have an impact on a parallel-plate capacitor's capacitance.

c) The area of each plate, the dielectric material separating the plates, and the distance between the plates all affect the capacitance of a parallel plate capacitor.

To learn  more about Capacitor refer to:

https://brainly.com/question/13578522

#SPJ1

If F = 37 N, the static frictional force between the block and the table and the minimum force required to move it must be equal.

It is the force that regulates itself. The value of static friction varies from zero to the smallest force required to initiate motion. The formula for determining static friction is as follows: Normal Force divided by the static friction coefficient is static friction.

Although the maximum static friction will rise, the frictional force will always be the same as the weight in mg because friction cannot accelerate an object. Because FrN can take any value less than N to balance the weight, this is the case.

To know more about static frictional visit :-

https://brainly.com/question/13000653

#SPJ1

Gravity and wind speed are vector quantity , Temperature , Volume , Number of pages in a book are the scalar quantity

In terms of their size and direction, the physical quantities may be divided into scalars and vectors.The examples of physical quantities that can be sort into vectors and scalars are temperature, gravity, volume, number of pages in a book, wind speed and direction, etc.

The following quantities are:

Temperature- The temperature is a scalar number since it just needs the magnitude (heat content) and not the direction.

Gravity - It is comparable to the force with which the Earth pulls an item that is always pointed toward its center. The amount is a vector since both magnitude and direction define it.

Volume - it is the pitch of a sound wave which is nothing but a form of energy which causes the sensation of hearing. Since the direction is not required to measure a sound level (determined by the corresponding frequency of the sound wave) but the only magnitude, therefore, it is a scalar.

The amount is a scalar since the number of pages in a book is entirely determined by a numerical value without the requirement for a direction.

Wind Speed and Direction - Since both the wind's magnitude in terms of speed and direction are necessary, the quantity is a vector.

Learn more about vectors

brainly.com/question/29740341

#SPJ4

The resultant velocity of the parachute is 3.4 m/s.

The term resultant velocity refers to the effective velocity  with which the parachute moves. We know that velocity is a vector quantity. Recall that a vector is known to have both magnitude and direction.

Given that the magnitude of the resultant vector can only be obtained geometrically we have;

Vertical component =   3.0 m/s

Horizontal component = 1.6 m/s

Resultant velocity = √(3)^2 + (1.6)^2

= 3.4 m/s

Learn more about resultant velocity:https://brainly.com/question/9163788

#SPJ1

if the universe is 13.8 billion years old, how can we see 46 billion light years away because space has also been expanding?

When total distance to distant cosmic objects like galaxies is taken into account, their measurement is referred to as cosmological distance. This distance accounts for universe's ongoing expansion. Space itself stretches as a result of the universe's expansion, causing two things' distances to grow even when they are not physically moving apart.

One may observe objects that are currently positioned farther distant than the age of the universe thanks to this stretching of space. For a very long time, light emanating from these far-off objects has been travelling through space. Light has essentially travelled a greater distance than the actual physical distance between us and the object because of the universe's expansion during that time.

Read more about universe on:

https://brainly.com/question/28365362

#SPJ4

The arrangement of tubes in Nancy Holt's Sun Tunnels creates a viewing experience much like a camera lens.

Nancy Holt's Sun Tunnels is a sculpture that was constructed in 1973-1976. The sculpture is made up of four large concrete tubes, each 18 feet long and 9 feet in diameter, placed in an open desert in Utah. The sculpture is arranged in such a way that it allows the viewer to experience the natural environment through the lens of the concrete tubes.In the sculpture, the tubes are arranged in such a way that they frame the landscape and create a sort of tunnel for the viewer to look through. When viewed from inside the tunnels, the viewer is able to see the landscape outside in a way that is similar to looking through a camera lens.The Sun Tunnels can be seen as a large camera obscura, which is an ancient optical device that is essentially a large box with a pinhole in one side. The light that enters the box is projected onto the opposite wall and creates an upside-down image of the outside world. Similarly, the tubes in the Sun Tunnels act as a pinhole and allow light to pass through in a way that creates an image of the outside world when viewed from inside the tunnels.

Therefore, the arrangement of tubes in Nancy Holt's Sun Tunnels creates a viewing experience much like a camera lens.

To learn more about Nancy Holt's Sun Tunnels visit:

brainly.com/question/33609935

#SPJ11

In Rutherford's famous set of experiments, the fact that some alpha particles were deflected at large angles indicated that the atom contains a dense, positively charged nucleus.

Rutherford conducted experiments where he bombarded a thin gold foil with alpha particles. According to the prevailing model at the time, the Thomson model, it was believed that the positive charge in an atom was spread uniformly throughout the atom, much like plum pudding.

However, Rutherford's observations revealed that some alpha particles experienced significant deflections and even bounced back at large angles. This unexpected result could not be explained by the Thomson model.

Rutherford proposed a new atomic model known as the nuclear model, suggesting that the atom consists of a tiny, dense, positively charged nucleus at the center and the majority of the atom is empty space. This explained the deflection of alpha particles, as they were repelled or deflected by the positive charge concentrated in the nucleus.

The deflection of alpha particles at large angles indicated the presence of a compact and positively charged nucleus within the atom, leading to a fundamental revision of the understanding of atomic structure.

To learn more about alpha particles click here

https://brainly.com/question/24276675

#SPJ11