light travels through space at a speed of 3.0 × 108 m/s. a space probe is traveling away from earth at 2.5 × 108 m/s when one of its spotlights is turned on. what speed would an observer on earth measure for the light from the spotlight

Answer: \(2.7*10^{-2} km/h\)

Explanation:

First you need to know the units that your quantity has. Velocity is given in length divided by time. So to transform from m/day to km/h we need to convert separately length from m to km and time from day to h. For length we have:

1km -------- 1000m

x ------------ 64m

x = 64/1000 = 64*\(10^{-3}\) km

Next we convert the time:

1 day = 24h

And now we just make the proper substitution:

\(64\frac{m}{day} = \frac{64m}{1 day} = \frac{64*10^{-3} km}{24 h} = \frac{64*10^{-3}}{24} \frac{km}{h} = 2.7*10^{-2} km/h\)

Note that our result has two significant figures (2.7) since 10 to -2 does not count as significant figures.

Answer: The molecules in gases are different from other states of matter

Explanation:

The molecules in gases are different from other states of matter because unlike, for example, a solid, they move around freely and are much more spread apart. A gas can fill up any container, but once the container is unsealed, the gasses will immedietly be let out. Gases can be compressed much more easily than a solid or a liquid.

Motion of the bones relative to the three cardinal planes is known as osteokinematic motion, which is resulting from physiological movement.

Osteokinematics describes clear and smooth movements of those bones which are visible from the outside. They are the gross movement that occurs between two bones. They are generated from the rotation around the joint axis. Movement is generaly rotational around the joints.

There are some examples of Osteokinematics are:

Flexion and extension

Abduction and adduction

Lateral rotation and medial rotation

Osteokinematics are different from arthrokinematics. In general Osteokinematics is the bone movement and Arthrokinematics is the joint movement.

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The motor oil, where the metal sphere takes least time to fall, has  the least viscosity.

We refer to this resistance to motion that most fluids provide as "viscosity." When there is relative motion between the fluid's layers, viscosity develops.

More specifically, it measures flow resistance brought on by internal friction between fluid layers that occur when they pass one another during fluid flow.

Strong intermolecular forces provide a lot of internal friction in a fluid with a high viscosity, which makes it difficult for layers to move past one another.

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Answer:

Explanation:

It 100 kg It think

The Final speed of the cart = ( Δ Distance ) / time travelled

Although your question lacks some missing data a general answer is provided within the scope of your question .

Given that:

Speed = Distance / time

Initial speed of the cart = 30 cm/sec

The Final speed of the cart ( V ) = Δ Distance / time

Hence we can conclude that the final speed of the cart will be ( Δ Distance ) / time travelled.

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Answer:

is an early warning sign of infection

Explanation:

it allows organs and bodily proccess to work effectively

Answer:

Magnetic field lines exit out of the North pole . Magnetic field lines enter into the South pole. Magnetic field lines travel around a bar magnet in closed loops.

Explanation:

Magnetic field lines shows the direction of a magnetic force and how it acts, it gives the direction of the magnetic field at that point in time.

For a bar magnetic, the magnetic field lines runs from the north pole to the south pole, i.e. it exits the north pole and enters into the south pole. This magnetic field lines also go through the magnet forming closed loops without ends.

Answer:

Magnetic field lines exit out of the

✔ north pole

.

Magnetic field lines enter into the

✔ south pole

.

Magnetic field lines travel around a bar magnet in

✔ a closed loop

.

Explanation:

The mass and weight of object on moon is 0.0138kg  and 0.0229kg .

Since force is a vector quantity, we must consider the direction in which it acts. There are two main types of frictional force: static force (Fst) and sliding force (Fsl). Normal forces (FN) produce these forces acting perpendicular to the direction of motion, although they act in the opposite direction to the object's motion.

It is equivalent to the weight of the object plus the extra weight. For example, pushing down on a block of wood on a table increases the normal force and thus the frictional force.

me=12Kg

ge=10

gm=10/6= 1.66

M=?

me ge =M gm

M=me ge/gm

M=120/1.66

M=0.0138kg

W=mg =0.0138 x 10kg

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Alice is weightless because she is in free fall.

Free-fall occurs when an object is experiencing the force of gravity but is not experiencing any other forces, such as air resistance. Because Alice is in a spacecraft, air resistance is not a factor, so she is essentially in a vacuum.

When an object is in a vacuum, the only force acting upon it is gravity. Therefore, Alice is in free fall and is experiencing weightlessness. This is in contrast to you, who is experiencing 1g of acceleration due to the force of the engine of your spacecraft.

This force is greater than the force of gravity, so you are not in free fall, and thus you are feeling the effects of the gravitational field.

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Answer:

White light contains yellow, green, and blue - only the blue light will be reflected giving the blue color.

So the green and yellow light thru the filter will not be reflected and the fabric will still appear blue.

blue is correct

The total distance traveled by the car is approximately 87.68 kilometers.

To find the total distance traveled, we can use the Pythagorean theorem, which states that in a right triangle, the square of the hypotenuse is equal to the sum of the squares of the other two sides.

In this case, the car travels 50.0 km west and 72 km north. These distances form the legs of a right triangle, and the total distance traveled is the hypotenuse.

Using the Pythagorean theorem:

Total distance² = (Distance traveled west)² + (Distance traveled north)²

Total distance² = (50.0 km)² + (72 km)²

Total distance² = 2500 km² + 5184 km²

Total distance² = 7684 km²

Taking the square root of both sides to find the total distance:

Total distance = √7684 km²

Total distance ≈ 87.68 km

Therefore, the total distance traveled by the car is approximately 87.68 kilometers.

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Answer:

8.5 Ω

Explanation:

La resistencia de un material es directamente proporcional a su longitud e inversamente proporcional al área de la sección transversal.

La fórmula de la resistencia (R) viene dada por:

R = ρL/A

Donde ρ es la resistividad del material, L es la longitud del material y A es el área de la sección transversal del material.

Dado que:

L = 1 km = 1000 m, A = 2 mm² = 2 * 10⁻⁶ m², ρ (cobre) = 1.7 * 10⁻⁸ Ωm

Sustituyendo da:

R = 1,7 * 10⁻⁸ * 1000/2 * 10⁻⁶

R = 8.5 Ω

A spring of force constant 120 N/m acted up by a constant force of 240N. Then, the elastic potential energy stored in the spring is 240 Nm.

The elastic potential energy stored in the spring is formulated as follows

                                                 PE = ½kx²

Where PE is the elastic potential energy, x is the displacement of the spring from its equilibrium position, and k is the spring force constant.

In this question, the spring force constant is 120 N/m, and the constant force acting on the spring is 240 N. To find the spring displacement, we can use the formula:

F = kx

Where F is the force acting on the spring, x is the displacement, and k is the force constant,

So that:

F = kx

240 N = 120 N/m . x

x = 240 N/120 N/m

x = 2 m

Once x is known, then we can calculate the potential energy of the spring:

PE = ½kx²

PE = ½ (120) (2²)

PE = 60 x 40

PE = 240 Nm

So, the elastic potential energy stored in the spring is 240 Nm.

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Here: Amount of hydrogen = 1.50 g Amount of oxygen = 12.0 g so, 40/18XProtons = Atomic number = 18Neutrons = Mass number - Protons = 40 - 18 = 22 Electrons = Protons = 18.  The element with 18 protons is Argon, so 40/18X represents the isotope of Argon which contains 22 neutrons.

The element with 18 protons is Argon, so 40/18X represents the isotope of Argon which contains 22 neutrons. To find: Amount of water vapor formed Balanced chemical equation for the reaction:2H2(g) + O2(g) → 2H2O(g)From the balanced chemical equation.

From the balanced chemical equation, 2 moles of hydrogen react with 1 mole of oxygen to give 2 moles of water vapor. So, 0.75 mol of hydrogen will react with 0.375/2 = 0.1875 mol of oxygen to form water vapor.

Molar mass of water = 18 g/mol So, amount of water formed = 2 x 0.75 mol x 18 g/mol = 27 g Thus, 27 g of water vapor is formed. Determine the protons and electrons in each of the following ions:

The given ions are:Ni2+Ga3+Cr3+Al3+Br-Number of protons and electrons in the ions are:Ni2+Ga3+Cr3+Al3+Br-

Determine the number of protons, neutrons and electrons in the following:40/18XProtons = Atomic number = 18

Neutrons = Mass number - Protons = 40 - 18 = 22 Electrons = Protons = 18

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Answer:

Did you forget the answers

Explanation:

if so leave in comments and i will try to figure out

Answer:

what is the question and the answers??

Answer:

5/8 times that on the surface of the earth or 2.41 × 10^23 kg

I'm pretty sure this poor guy could never have been accepted for astronaut training, much less a mission to the Moon.  

He weighs something like 335 pounds when he's ON THE MOON !

If he has enough fuel, and survives a trip back to Earth, he'll weigh around 9,080 Newtons here.  That's like 2,040 pounds ... durn close to a ton ! !

Answer:

Gravitational field strength:

Moon is 1.6N/kg

Earth is 9.8N/kg or 10N/kg

Moon:

Weight = mass x gravitational field

1500N = m x 1.6N/kg

÷1.6 both sides

937.5 = m

Mass of astronaut is 937.5kg

(Your mass doesn't change, no matter where you go, in space)

Earth:

Weight = mass x gravitational field

= 937.5kg x 9.8 N/kg

= 9187.5N

Or

Weight = mass x gravitational field

= 937.5kg x 10 N/kg

= 9375N

Thus, the astronaut's weight will be 9187.5N or 9375N on Earth.

Hope this helps!

Answer:

False

Explanation:

The wavelength of red light is greater than blue light.  Its energy is less.

Both statements are false.    Search for a graphic of the "electromagnetic spectrum."  Many will note the wavelengths of the various regions (IR, UV, Visible, Microwave, etc.  Observe the relationships.  Red has less energy than blue.  That sounds counterintuitive, based on artist's use of red to connote fire or some energetic situation.  But the red in a fire obscures human vision to the blues and UV radiation from the same source.  A welder uses a UV shield to blocjk these wavelengths, to avoid eye damage.

The phase of the moon when the moon is on the opposite side of the earth from the sun is the full moon. This happens when the sun, earth, and moon are aligned, with the earth in the middle.

The full moon appears when the sun’s light reflects off the entire surface of the moon, making it appear completely illuminated from our perspective on earth.Therefore, option A is the correct answer: The full moon.

When the moon is on the opposite side of the Earth from the sun, it is in the full moon phase. During this phase, the sun illuminates the entire side of the moon facing the Earth, making it appear fully lit and round. This occurs because the sun, Earth, and moon are aligned in a straight line, with the Earth in the middle. The full moon phase is characterized by a bright, round shape and is often considered the most visually striking lunar phase. It occurs approximately once every 29.5 days as the moon orbits around the Earth.

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Answer:

The difference in distance from the speakers is 5.2 - 3.5 = 1.7 m

The listener would be 1/2 wavelength out of phase with the speakers

1/2 y = 1.7 m    where y is the wavelength

y = 3.4 m       the required wavelength

f = v / y = 340 m/s / 3.4 m = 100 / sec     lowest frequency  

Answer:

100.8

Explanation:

Trust :)

Answer:

The time taken by it to hit the ground is 0.903 seconds.

The free body diagram for the problem is shown below:

If the people don't slide down this means that the friction has to be equal to the Weight, then we have:

Now, from newton's second law we have that:

but

then:

And then we have:

Plugging the values given we have:

Therefore the coefficient of friction is 0.238

The transformative energy related to viewing Jowo Rinpoche is conveyed via meditation.

Jowo Rinpoche is considered the holiest Buddha image in Tibet and has spiritual significance. The image is believed to have been created during the lifetime of Buddha Shakyamuni and is considered to be an icon of the compassionate energy of the Buddha. The transformative energy is related to the fact that viewing Jowo Rinpoche image is believed to be a transformative experience that brings blessings, healing, and spiritual transformation to the observer. This is because, according to the Tibetan Buddhist tradition, the image of Jowo Rinpoche embodies the transformative energy of the Buddha, which can be accessed through meditation and contemplation. Thus, when one views the Jowo Rinpoche image with devotion and an open mind, they are believed to receive blessings, and their transformative journey towards enlightenment is enhanced.

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Answer:

Decreases

Explanation:

As an object falls from some height, the gravitational potential energy of the object decreases.

Potential energy is the energy due to the position of a body.

The potential energy is mathematically expressed as:

   Potential energy  = mass x acceleration due to gravity x height

So, potential energy is directly proportional to mass and height.

The higher the mass and height, the more the potential energy.

Answer:

C. C

Explanation:

A wave can be defined as a disturbance in a medium that progressively transports energy from a source location to another location without the transportation of matter.

In Science, there are two (2) types of wave and these include;

I. Electromagnetic waves: it doesn't require a medium for its propagation and as such can travel through an empty space or vacuum. An example of an electromagnetic wave is light.

II. Mechanical waves: it requires a medium for its propagation and as such can't travel through an empty space or vacuum. An example of a mechanical wave is sound.

A crest can be defined as the highest (vertically) point on a waveform.

On a related note, a trough is the lowest (vertically) on a waveform.

An amplitude can be defined as a waveform that's measured from the center line (its origin or equilibrium position) to the bottom of a trough or top of a crest. Thus, the vertical axis (y-axis) is the amplitude of a waveform i.e it's measured vertically.

In this scenario, waveform C which is represented by a blue curvy line has the smallest amplitude in comparison with the other waveforms because it has the minimum height when measured from the origin.

In contrast, waveform A represented by a purple line has the highest amplitude because it has the maximum height when measured from the origin.

Mathematically, the amplitude of a wave is given by the formula;

x = Asin(ωt + ϕ)

Where;

Answer:

The answer is indeed D as the comment above suggests.

Explanation:

Simply put, wave D's highest point is closer to the line than all of the other high points of A, B and C

Answer:

decrease

Explanation:

because it’s going to 180 meaning it’s becoming equal to the other and they cancel out

True. Earthquakes should have only one magnitude, but in practice, different measurement methods and aftershocks can result in some level of uncertainty and multiple values.

The magnitude of an earthquake is a measure of the amount of energy released during a seismic event. Theoretically, a single earthquake should only have one magnitude, which is determined by analyzing the amplitude of the seismic waves recorded on seismographs. However, in practice, different methods of measurement or different seismic stations can yield slightly different magnitude values, resulting in some level of uncertainty in the reported magnitude. Furthermore, earthquakes can cause aftershocks, which are smaller seismic events that occur after the main earthquake. These aftershocks can have their own magnitudes, which are typically smaller than the main earthquake but can still cause damage and contribute to the overall seismic activity in the region.

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