if a very distant galaxy looks blue overall to astronomers, from this they can conclude that:

The correct option is d. All of the above. All the options are correct and satisfy the conditions mentioned below.

a. A is easier to solve with mental math. This condition is correct because the problem A involves smaller numbers which are easier to manipulate mentally compared to the large numbers involved in B.

b. There is more work to be done for B, for both man and machine. This condition is correct because problem B involves larger numbers which are difficult to handle manually as well as through machines compared to A.

c. Both problems are of similar difficulty if computational thinking is applied. This condition is correct because computational thinking involves breaking down a complex problem into small and manageable parts. Both problems A and B can be solved using computational thinking by breaking down the large numbers into small parts. This makes both the problems of similar difficulty when computational thinking is applied.

Therefore, the correct answer is d. All of the above.

Learn more about mental math visit:

brainly.com/question/1056269

#SPJ11

The resolving power of a microscope is greatest when the object being observed in illuminated by visible light.

The resolving power of a microscope, also known as its resolution, is the smallest distance between two objects that can still be seen as two separate objects under the microscope. The resolving power of a microscope is determined by the quality of its lenses and its illumination source.

The resolving power of a microscope is greatest when the object being observed is illuminated by visible light. This is due to the fact that visible light has a shorter wavelength than other types of light, such as ultraviolet and infrared. Shorter wavelengths allow for greater resolution, resulting in a clearer and more detailed image of the specimen being viewed.

To know more about microscope visit:

https://brainly.com/question/1869322

#SPJ11

Contact electrification occurs any time two objects with different levels of charge make physical contact.

Contact electrification is a word that describes a phenomenon wherein surfaces end up electrically charged, thru a number of viable mechanisms, while  or greater objects come within near proximity of one another.

Static electricity is created while effective and bad costs aren't balanced. Protons and neutrons do not circulate around tons, however electrons love to jump all around the place. Whilst an item has greater electrons, it has a poor price.

Static electricity is an imbalance of electrical costs with in or at the surface of a material. The rate stays till it could pass away by an electric powered current or electric discharge.

Learn more about Static electricity here:- https://brainly.com/question/4918499

#SPJ4

Answer:

\(\lambda=3\ m\)

Explanation:

Given that,

The horizontal distance between the two nodes is 1.5 meters.

We need to find the wavelength of the standing wave.

If we know the distance between nodes and antinodes, then the equation is :

\(\dfrac{\lambda}{2}=D\)

Where

\(\lambda\) is the wavelength

So,

\(\lambda=2D\\\\=2\times 1.5\\\\=3\ m\)

So, the wavelength of the standing wave is equal to 3 m.

Answer:

x = 5 + 8.3

x = 13.3

x = 13

Hope this helps

Answer:

\(104\; {\rm g}\), assuming that the meter stick is uniform with the center of mass precisely at the \(50\; {\rm cm}\) mark.

Explanation:

Refer to the diagram attached. The meter stick could be considered as a lever. The string at the \(30\; {\rm cm}\) mark would then act as the fulcrum of this lever.

The \(m_{A} = 20\; {\rm g}\) mass at the \(80\; {\rm cm}\) mark is at a distance of \(r_{A} = 50\; {\rm cm}\) to the right of the fulcrum at \(30\; {\rm cm}\).

The weight of the \(80\; {\rm g}\) meter stick acts like a weight of \(m_{B} = 80\; {\rm g}\) attached to the center of mass of this meter stick. Under the assumptions, this center of mass of this meter stick would be at the \(50\; {\rm cm}\) mark, which is \(r_{B} = 20\; {\rm cm}\) to the right of the fulcrum at \(30\; {\rm cm}\).

Let \(m_{C}\) be the mass attached to the meter stick at the \(5\; {\rm cm}\) mark. This mass would be at a distance of \(r_{C} = 25\; {\rm cm}\) to the left of the fulcrum at \(30\; {\rm cm}\).

At equilibrium:

\(\begin{aligned} & m_{C}\, r_{C} && (\text{mass on the left of fulcrum})\\ &= m_{A}\, r_{A} + m_{B} \, r_{B} && (\text{mass on the right of fulcrum})\end{aligned}\).

Solve for \(m_{C}\), the unknown mass attached to the meter stick at the \(5\; {\rm cm}\) mark:

\(\begin{aligned}m_{C} &= \frac{m_{A}\, r_{A} + m_{B}\, r_{B}}{r_{C}} \\ &= \frac{20\; {\rm g} \times 50\; {\rm cm} + 80\; {\rm g} \times 20\; {\rm cm}}{25\; {\rm cm}} \\ &= 104\; {\rm g}\end{aligned}\).

The angle between the resultant and the larger force is 60 degree  if resultant force value is value 9.1Newtons.

We know that resultant force is given by the superposition principle which uses a formula

Resultant force =√((F₁)² + (F₂)² + 2 ˣ F₁ ˣ F₂ ˣ cosθ)

Superposition principle of electric force to find the resultant power, all accuses are thought about independently of that specific charge as though any remaining charges are missing. Along these lines, for each charge, the power on that specific charge is to be found out. Then the vector amount of the multitude of forces gives the resultant forces on that charge.

We have resultant force as 9.1Newton,F₁=6.2newton,F₂=4.4 newton

So,on putting the values,we get

=>(9.1) = √[(6.2)² + (4.4)² + 2 × 6.2×4.4×cosθ]

Squaring on both sides,we get

=>9.1 × 9.1 =(6.2)² + (4.4)² + 2× 6.2×4.4×cosθ

=>82.81=38.44 + 19.36 + 54.56×cosθ

=>82.81=57.8+ 54.56×cosθ

=>82.81-57.8= 54.56×cosθ

=>25.01=54.56×cosθ

=>cosθ=25.01/54.56

=>cosθ = 0.458

=>cosθ=cos(62.5)°

=>θ=62.5°

=>θ=60°(nearest 10th)

To know more about force,visit here:

https://brainly.com/question/22260425

#SPJ4

Answer:

As we all knows that Matter is everything that occupies in space.

(A) There are three major types of Matter;

(B) (I) If John took five ice cubes from the freezer and place them into a cup after 5 minutes, he returned and saw water this process is called melting.

(ii) if he put the same cup into the freezer and turned into ice in 5 minutes this

process is called freezing.

(iii) if John places the ice from the cup into a pot on a lit stove for 2 minutes and leaves, and he returned and find the pot empty this process is called evaporation.

Answer:

Acceleration, a = 2.47 seconds

Explanation:

Given the following data;

Time, t = 1.8 seconds

Distance = 4 meters

Initial velocity = 0 m/s (since it's starting from rest)

To find the acceleration of the toy car, we would use the second equation of motion;

\( S = ut + \frac {1}{2}at^{2}\)

Where;

S represents the displacement or height measured in meters.

u represents the initial velocity measured in meters per seconds.

t represents the time measured in seconds.

a represents acceleration measured in meters per seconds square.

Substituting into the equation, we have;

Substituting into the formula, we have;

\( 4 = 0(1.8) + \frac {1}{2}*a*(1.8)^{2}\)

\( 4 = 0 + \frac {1}{2}*a*3.24\)

\( 4 = \frac {1}{2}*a*3.24\)

Cross multiplying, we have;

\( 8 = 3.24a\)

\( a = \frac {8}{3.24}\)

Acceleration, a = 2.47 seconds

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

The type of energy that travels to Earth from the Sun in the form of electromagnetic waves is radiant energy.

Radiant energy is a form of energy that is transmitted through space in the form of electromagnetic waves. These waves include a wide range of frequencies and wavelengths, collectively known as the electromagnetic spectrum. This spectrum includes various forms of energy, such as visible light, infrared radiation, ultraviolet radiation, X-rays, and radio waves.

The Sun emits radiant energy across the entire electromagnetic spectrum, but the majority of the energy it releases is in the form of visible light and infrared radiation. This energy travels through the vacuum of space and reaches Earth, providing heat and light that are essential for sustaining life and driving various natural processes on our planet.

Learn more about radiant energy here:

https://brainly.com/question/30361453

#SPJ11

It would take 1.556 seconds for the barrier to crumple and safely slow down the person with a force of 1180 N.

To calculate the time required to crumple the barrier and safely slow down the person, we can use the concept of impulse.

The impulse, denoted by J, is defined as the product of force and time, and it represents the change in momentum of an object. In this case, the impulse required to safely slow down the person can be calculated using the maximum force and the person's initial momentum.

The momentum of a person is given by the product of their mass and velocity:

Momentum = mass × velocity

Given that the person's mass is 68 kg and their velocity is 27 m/s, the initial momentum is:

Initial momentum = 68 kg × 27 m/s

To safely slow down the person, the impulse provided by the barrier should be equal to the change in momentum.

Therefore, we have:

Impulse provided by barrier = Final momentum - Initial momentum

Since the person is brought to rest, the final momentum is zero. Thus, we have:

Impulse provided by barrier = -Initial momentum

Now we can express the impulse in terms of force and time:

Impulse provided by barrier = Force × Time

Plugging in the known values, we can solve for time:

-Initial momentum = Force × Time

68 kg × 27 m/s = 1180 N × Time

Simplifying the equation, we find:

Time = (68 kg × 27 m/s) / 1180 N

Evaluating the expression:

Time = 1836 kg·m/s / 1180 N

Finally, converting kg·m/s to seconds, we get:

Time ≈ 1.5559 seconds

Therefore, it would take approximately 1.556 seconds for the barrier to crumple and safely slow down the person with a force of 1180 N.

know more about force here:

https://brainly.com/question/12785175

#SPJ8

Answer:

When sunlight strikes a solar panel what form of energy is transformed to?

Solar radiation may be converted directly into electricity by solar cells (photovoltaic cells). In such cells, a small electric voltage is generated when light strikes the junction between a metal and a semiconductor (such as silicon) or the junction between two different semiconductors.

Explanation:

Answer:

The maximum height is determined by the initial vertical velocity. Since steeper launch angles have a larger vertical velocity component, increasing the launch angle increases the maximum height.

Explanation:

brainliest plzzzzzzzzzzzzzzz

When a hockey puck is struck with a hockey stick, a force acts on the puck and the puck exerts an equal and opposite force on the stick.

According to Newton's third law of motion, for every action, there is an equal and opposite reaction. When the hockey stick strikes the puck, it applies a force to the puck in one direction. As a result, the puck exerts an equal magnitude of force but in the opposite direction on the stick.

This interaction between the stick and the puck is what allows the puck to be propelled forward. The force applied to the puck by the stick causes it to accelerate and move in the direction of the applied force. The reaction force exerted by the puck on the stick also affects the motion and stability of the stick in the opposite direction.

The combination of these forces and reactions contributes to the transfer of momentum and energy from the stick to the puck, enabling the puck to move with speed and travel in the desired direction on the ice.

Learn more about the puck and the puck exerts here:

https://brainly.com/question/30952505

#SPJ11

Answer:

biology. hope this helps

Answer:

it takes 3 hours to travel

Explanation:

120 ÷ 40 = 3

Step 1. distance = speed * time or time = distance/speed. 

Step 2. time = 120 miles/(40 miles/hour) = 3 hours. 

Step 3. ANSWER: It would take 3 hours to travel 120 miles at 40 mph. 

The four factors the quantity of heat lost or gained by body depends specific heat capacity.

Specific heat capacity:

     The quantity of heat absorbed per unit mass of the material when its temperature gets increases by 1K is said to be Specific heat Capacity.

The unit of specific heat capacity is J/(kg K).

The transferred heat depends on three factors:

Hence, these are the four factors the quantity of heat lost or gained by body depends.

Formula for specific heat capacity is,

                         \(Q=mc\Delta T\)

Q - heat energy

m - mass

c - specific heat capacity

ΔT - change in temperature.

Learn more about Specific heat capacity,

https://brainly.in/question/1236607

#SPJ2

Answer:

Yes

Explanation:

Energy can be transferred from one object to another or between energy stores within the same object. For example on a pool table when white ball hits another ball energy is transferred from the kinetic store of the white ball to the kinetic store of the other ball.

Answer:

Yes. Energy changes from one form to another.

Explanation:

It is possible. For example, a rock sitting on a cliff has lots of potential energy. As it falls down the cliff, the potential energy turns into kinetic energy.

Another example would be a spring. When a spring is stretched it has a lot of elastic potential energy. When you release it it becomes kinetic energy.

Answer:

A mineral has a volume of 6 mL and a mass of 12g.

Explanation:

Was this right?

Answer:

It helps prevents falls and supports your body. So having a strong core is beneficial to everyone because it allows your body to function properly. Improved Balance and Stability. Core exercises train the muscles in your pelvis, lower back, hips and abdomen to work together.

A star's twinkling is caused by light from the star being refracted by the earth's atmosphere.

What is stars?
An astronomical object known as a star is made up of a luminous plasma spheroid that is held together by gravity. The Sun is the star that is closest to Earth. Other stars are also visible at night with the unaided eye, but due to their great distances from Earth, they appear as stationary points of light. Many of the brightest stars have names, and the most notable stars have been grouped into constellations and asterisms. Star catalogues have been put together by astronomers that list the known stars and offer standardised stellar designations. An estimated 10^22–10^24 stars are present in the observable universe. Only 4,000 of these stars can be seen with the unaided eye, and they are all located in the Milky Way galaxy.

To learn more about stars
https://brainly.com/question/25821071
#SPJ4

Answer:

80m/s

Explanation:

The formula for velocity is [ v = s/t ] where s = displacement and t = time.

= 400/5

= 80m/s

Best of Luck!

Answer:

30.66667

Explanation:

this should be it i did the math

Answer:

1. directly

2. inversely

Explanation:

The relationship between the energy of a photon and its frequency is dictated by another simple equation:

E = hv = hc/λ

where E is the energy in kiloJoules per mole, h is Planck's constant with a value of 6.626 x 10-34 Joule-seconds per particle, λ is the wavelength of light λ in meters,  and c is the speed of light with a constant value of 300 million meters per second. From this equation, it is clear that the energy of a photon is directly proportional to its frequency and inversely proportional to its wavelength. Thus as frequency increases (with a corresponding decrease in wavelength), the photon energy increases and vice versa.

Energy of a photon is directly proportional to frequency, and inversely proportional to wavelength.

Energy is the ability or capability to do tasks, such as the ability to move an item (of a certain mass) by exerting force. Energy can exist in many different forms, including electrical, mechanical, chemical, thermal, or nuclear, and it can change its form

The relationship between the energy of a photon and its frequency is

E = hv = hc/λ

where E is the energy in kiloJoules per mole,

h is Planck's constant with a value of 6.626 x 10-34 Joule-seconds per particle,

λ is the wavelength of light λ in meters,  

c is the speed of light with a constant value of 300 million meters per second.

From this equation, it is clear that the energy of a photon is directly proportional to its frequency and inversely proportional to its wavelength.

To learn more about energy refer to the link:

brainly.com/question/1932868

  #SPJ2

The question on how electromagnets are produced that students may answer to help explain the disparities in the quantity of paper clips taken up by the electromagnets "What is the strength of  electromagnet”

The imbalance of electric charges within or on the surface of a substance, or between materials, is known as static electricity.

Static electricity is generated by Van de Graaff generators. Static does not include acceleration, implying that it is stationary, which pertains to the formation of electric charges.

a)The question on how electromagnets are produced that students may answer to help explain the disparities in the quantity of paper clips taken up by the electromagnets "What is the strength of  electromagnet”

b)The one factor, other than how the electromagnets were manufactured, that influences the quantity of paper clips the electromagnet picks up will be electrostatics.

Hence,the whole activity is about the electromagnets.

To learn more about static electricity refer:

https://brainly.com/question/12791045

#SPJ1

Answer:

Electromagnets are widely used as components of other electrical devices, such as motors, generators, electromechanical solenoids, relays, loudspeakers, hard disks, MRI machines, scientific instruments, and magnetic separation equipment.Explanation:

Answer:

0.84m

Explanation:

0.51+0.43=0.93

πr can be 22/7 or 3.14

radius is 2x2= 4

3.14 divide0.93divide 4

=0.84m/s

Answer:

0.605 m (approx.)

Explanation:

We know, given the radius and the circular velocity we can yield the centripetal acceleration using this equation,

\(a = \frac{v^2}{r}\)

From this equation, we can solve for \($r$\) like this,

\(r = \frac{v^2}{a}\\r = \frac{0.51^2}{0.43} m \\ = 0.605 m\)