Evidence that the universe is expanding is best supported by the observation that the wavelengths of light from distant galaxies are shifted toward the
a. red end of the spectrum because they are shortened
b. red end of the spectrum because they are lengthened
c. blue end of the spectrum because they are shortened
d. blue end of the spectrum because they are lengthened

Answer:

\(\vec v_0=30.99 \ m/s\)

Explanation:

Refer to the attached image.

Here is a link to another projectile problem that gives some useful information, https://brainly.com/question/32300395. Although, this problem was a special case where we could use the range formula. So, here’s a bit of information about when it’s applicable to use the range formula.

You can use the range formula only if these two things apply:

1. The projectile lands at the same height originally fired from

2. The projectile isn't fired horizontally, (i.e. θ≠0° )

Answer:

rotation

Explanation:

............................

Answer: 2nd option, Rotation

I hope this helps, and Stay Safe! :)

A-From 0 to 2 seconds, the height of the balloon increases, B- From 2 to 4 seconds and from 10 seconds onwards, the height remains constant.

C-From 4 to 6 seconds, the height decreases at the fastest rate due to a steep slope.

D- The model predicts that the height of the balloon will reach zero after 10 seconds, indicating that the balloon has burst and touched the ground. Therefore, in the real world, it can be expected that the height of the balloon will be zero at 16 seconds.

A linear model is a mathematical model that assumes a linear relationship between input variables and output variables. In other words, a linear model is a model that can be represented as a straight line. The general form of a linear model can be written as:

y = a + b1x1 + b2x2 + ... + bnxn

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The complete question is:

The linear model represents the height, f(x), of a water balloon thrown off the roof of a building over time, x, measured in seconds: Part A: During what interval(s) of the domain is the water balloon's height increasing? (2 points) Part B: During what interval(s) of the domain is the water balloon's height staying the same? (2 points) Part C: During what interval(s) of the domain is the water balloon's height decreasing the fastest? Use complete sentences to support your answer. (3 points) Part D: Use the constraints of the real-world situation to predict the height of the water balloon at 16 seconds. Use complete sentences to support your answer.

Answer:

In geometry, parallel lines are lines in a plane which do not meet; that is, two straight lines in a plane that do not intersect at any point are said to be parallel. Colloquially, curves that do not touch each other or intersect and keep a fixed minimum distance are said to be parallel.

In a series circuit, the current that flows through each of the components is the same, and the voltage across the circuit is the sum of the individual voltage drops across each component. ... In a series circuit, every device must function for the circuit to be complete.

In a series circuit, all components are connected end-to-end, forming a single path for current flow. In a parallel circuit, all components are connected across each other, forming exactly two sets of electrically common points.

Explanation:

I hope these helps^,^      ^_^

Answer:

87

Explanation:

The time taken for the car to decelerate is 4.5 seconds.

option B.

The acceleration of the car is calculated from Newton's second law of motion as follows;

F = ma

a = F / m

a = ( 7500 ) / ( 2250 )

a = 3.33 m/s²

The time taken for the car to slow down is calculated as follows;

v = u + at

at = v - u

t = ( v - u ) / a

where;

t = ( 20 - 5 ) / 3.33

t = 4.5 seconds

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Answer:

KE = 1/2 mv2

KE = 1/2 mv2 KE = 1/2 (0.50kg) (40m / s)

KE = 1/2 mv2 KE = 1/2 (0.50kg) (40m / s) 2 KE = 1/2 (0.50) (402)

KE = 1/2 mv2 KE = 1/2 (0.50kg) (40m / s) 2 KE = 1/2 (0.50) (402) KE = 0.5 x 0.50 x 402

KE = 1/2 mv2 KE = 1/2 (0.50kg) (40m / s) 2 KE = 1/2 (0.50) (402) KE = 0.5 x 0.50 x 402 KE = 400 J

KE = 1/2 mv2 KE = 1/2 (0.50kg) (40m / s) 2 KE = 1/2 (0.50) (402) KE = 0.5 x 0.50 x 402 KE = 400 JKE = 0.4 KJ

Answer:

K. E = 1/2MV²

K. E = 1/2 x 0.50kg x (40m/s)²

K. E = 1/4kg x 1600m²/s²

K. E = 400

The keys were thrown upward with an initial velocity of 16.0 m/s.

The equation for vertical position is given by:

                                        y = v0t + (1/2)at^2

where,

v0 is the initial velocity,

t is the time elapsed, and

a is acceleration due to gravity (assumed to be -9.8 m/s^2).

Rearranging the equation for t and substituting the known values, we get:

t = √(2(y - v0t)/a) = √(2(4.15 - 0)/(-9.8)) = 1.70 s

Now that we have the time, we can solve for the initial velocity:

v0 = (y - (1/2)at^2)/t = (4.15 - (1/2)(-9.8)(1.70)^2)/1.70 = 16.0 m/s.

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There have been numerous technological advances. The correct option is D

Cosmology is the branch of astronomy that deals with the study of the origin, evolution and structure of the universe as a whole. It seeks to understand the fundamental nature of the universe and its contents, including the laws of physics that govern it the distribution of matter and energy the large-scale structure of the universe and its eventual fate.

Therefore, Over the last 20 years, there have been many technological advancements in cosmology, such as new space-based telescopes, advanced ground-based observatories and supercomputers. These advancements have allowed scientists to gather more precise data and make more detailed observations of the universe.

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Answer:

Dietary carbohydrates provide the body with energy for tough workouts and replenish energy stores in muscles in the form of glycogen.

Explanation:

Answer:

\(\huge\boxed{10\:watts}\)

Explanation:

Power = Current × Voltage

P = I × V

P = 2 × 5

P = 10 watts

Voltage or potential difference is calculated by taking the difference between the voltages at two points. Thus, if two points have 3.0 V and 7.0 V potential, the voltage or potential difference between the two points can be found by subtracting the lower potential from the higher potential.

That is:

Potential difference = Higher potential - Lower potential
                                 = 7.0 V - 3.0 V
                                 = 4.0 V
Therefore, the potential difference between the two points is 4.0 V. The electric potential difference between two points is the work done per unit charge in moving a test charge from one point to the other.

A potential difference is a measure of the electric potential energy per unit charge between two points in an electric field. The electric potential at a point is defined as the work done per unit charge in bringing a test charge from infinity to that point.

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Approximately 3.50×10^23 nitrogen molecules collide with a 20.0 cm^2 wall every second, assuming the molecules travel at a speed of 380 m/s and strike the wall directly.

To find the number of nitrogen molecules colliding with the wall, we can use the formula:

Number of molecules = (Number of collisions per second) × (Number of molecules per collision)

Given that 3.50×10^23 nitrogen molecules collide with the wall each second, and each collision involves a single molecule, we can conclude that approximately 3.50×10^23 nitrogen molecules collide with the wall per second.

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The traveled distance of the car from the initial point is (4+7) Km, i.e., 11 Km.

Answer:

Explanation:

The work done by an object can be found by using the formula

workdone = force × distance

From the question we have

workdone = 5 × 10 = 50

We have the final answer as

Hope this helps you

Answer:

I can help u so send me gta 5

Explanation:

send me credit like 20GB

The correct answer is option B. It travels up and down. Transverse waves are characterized by the fact that they cause particles in the medium to move perpendicular to the direction of wave propagation.

Transverse waves are a type of wave that causes the particles of the medium to move up and down or side to side as the wave passes through them.

The other options are not right because:

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The kinetic energy of an object that has a mass of 50.0 kg and a velocity of 18m/s is 8,100J.

Kinetic energy refers to the energy of a body due to its motion. The kinetic energy can be calculated as follows:

K.E = ½ m × v²

Where;

According to this question, an object that has a mass of 50.0 kg and a velocity of 18m/s. The kinetic energy can be calculated as follows:

K.E = ½ × 50 × 18²

K.E = ½ × 16,200

K.E = 8100J.

Therefore, the kinetic energy of an object that has a mass of 50.0 kg and a velocity of 18m/s is 8,100J.

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F3 is the greatest of all forces , hence 3rd case in which masses were 200kg and 150 kg separated with a distance of 10 will have greatest force of all

The force of attraction between any two bodies is directly proportional to the product of their masses and is inversely proportional to the square of the distance between them is called gravitation force of attraction

gravitation force = Gm1 m2 / \(r^{2}\)

G = gravitational constant

m1 = mass of one object

m2 = mass of other object

r = distance between them

case 1

F1 = G (50) (100) / \(20^{2}\) = 12.5 G

F2 = G (50) (10) / \(10^{2}\)  = 5 G

F3 = G (200) (150) / \(10^{2}\) = 300 G

F4 =  G (200) (150) / \(30^{2}\) = 33.33 G

F3 is the greatest of all forces , hence 3rd case in which masses were 200kg and 150 kg separated with a distance of 10 will have greatest force of all

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In philosophy, an instrumental cause refers to something or someone that produces or creates something. In other words, an instrumental cause is an element or object that makes an event happen.

The instrumental cause cannot act alone because it requires a prior cause, such as an efficient cause, which is an external force that initiates or triggers the instrumental cause.

Instrumental causes are not usually considered as the authors of books. An author is someone who writes a book and has a specific purpose in mind for that book. Instrumental causes are typically more passive and are used to explain the mechanism behind a specific action or event.

They are not usually viewed as having a creative or intentional role in the process. However, there may be some cases where an instrumental cause is credited with creating or authoring something. This could occur when the instrumental cause is viewed as having some degree of intentionality or creativity, such as in the case of a musician who uses an instrument to create a song.

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Answer:

c

step by step explanation  

discharges let electric charge move freely

Answer:

definitely b

Explanation:

conductors let electric charges move freely whereas insulators and discharge don't

hope this helps

Answer:

D

Explanation:

120/2= 60km per hour

Electric potential difference, also known as voltage, is the result of a source that generates an excess of electrons (negative charge) at one end of a conductor and a deficit of electrons (positive charge) at the other end.

This voltage difference results from the separation of electric charges, which can happen through electromagnetic induction in a generator or chemical processes inside a battery. The conductor's electrons are repelled by an excess of electrons at one end and are drawn to the opposite end, which has a shortage of electrons. Electric current is the name for this flow of electrons, which may be used to power machinery and electronics. the source that creates an excess of electrons (negative charge) at one end of a conductor and a deficiency of electrons Voltage is a fundamental characteristic of electricity that is measured in volts (V).

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Answer:

Uranus

Explanation:

it's uranus....

Answer:

Mechanical weathering is the physical breakdown of rock into smaller pieces. Chemical weathering is the breakdown of rock by chemical processes.

Explanation:

Mechanical weathering (also called physical weathering) breaks rock into smaller pieces. These smaller pieces are just like the bigger rock, just smaller. That means the rock has changed physically without changing its composition. The smaller pieces have the same minerals, in just the same proportions as the original rock.

Chemical weathering is the other important type of weathering. Chemical weathering is different from mechanical weathering because the rock changes, not just in size of pieces, but in composition Chemical weathering works through chemical reactions that cause changes in the minerals.

If you increase the distance by a factor of 3, the intensity decreases by a factor of 9. This means that the correct answer is option b.

When you increase the distance by a factor of 3 from a sound source that is radiating equally in all directions, the intensity of the sound decreases. The relationship between distance and intensity is inverse square, meaning that if you double the distance from the source, the intensity decreases by a factor of 4. Therefore, if you increase the distance by a factor of 3, the intensity decreases by a factor of 9.

This means that the correct answer is option b, where the intensity reduces to 1/27th of its original value. It is important to note that this relationship assumes that there are no obstructions or other factors that could affect the sound wave as it travels through the air.

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Answer:

Explanation:

The properties of magnets are used to make electricity. Moving magnetic fields pull and push electrons. ... Moving a magnet around a coil of wire, or moving a coil of wire around a magnet, pushes the electrons in the wire and creates an electrical current.