(4) Show that v1,f =v1,i and v2,f =v2,i satisfy the conservation equations and explain why it is not a solution to an elastic collision problem. [4]. Answer:

The true azimuth of the AB alignment is 91º 52' (east of north), the magnetic azimuth is 100º 22' (east of north), and the grid azimuth is 108º 52' (east of north).

To find the true azimuth, magnetic azimuth, and grid azimuth of the AB alignment, we need to consider the magnetic declination. The magnetic declination indicates the angle between true north and magnetic north at a specific location. In this case, the magnetic declination is 8º 30' E, which means that the magnetic north is 8º 30' east of the true north.

To calculate the true azimuth, we subtract the magnetic declination from the grid azimuth. The grid azimuth is given as 100º 22', so subtracting the magnetic declination of 8º 30' E gives us a true azimuth of 91º 52' (east of north).

The magnetic azimuth remains the same as the grid azimuth, which is 100º 22' (east of north).

The grid azimuth is calculated by adding the magnetic declination to the true azimuth. Since the magnetic declination is east, we add it to the true azimuth. Adding 8º 30' E to the true azimuth of 91º 52' gives us a grid azimuth of 108º 52' (east of north).

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Answer:

s = ut + 1/2 att (that's "t" squared), where

s = distance travelled - in metres

u = initial velocity - in meres per second

a = acceleration - in metres per second squared, i.e. metres per second increase in acceleration, per second

t = time taken  - in seconds

Explanation:

Time, "t",  at a specific moment is a resolved variable, i.e. we know the value, so the equation needs to show distance "s" at that specific time "t". The basic equation is for fixed initial position (when t = 0) , where distance ,"s", = "0", fixed initial velocity, "u", ( at t = 0, s = 0 ) - which can be zero or a value, and fixed (constant) acceleration, "a", ( from t = 0, s = 0, through to t = "specific moment", s = "the answer" ) - which can be zero or a value.

Answer:

They store floodwater

Explanation:

Answer:

I think its frequency

Explanation:

Answer:

its B or A thank me please

Answer:

149 N

Explanation:

We can start by resolving the forces acting on the chair in the vertical direction:

N - mg = 0

where N is the normal force exerted by the floor on the chair, m is the mass of the chair, and g is the acceleration due to gravity.

Since the chair is not accelerating vertically, we know that the sum of the forces in the vertical direction is zero.

Now, let's resolve the forces acting on the chair in the horizontal direction. We'll use the force you applied and the force of friction between the chair and the floor:

F - f = ma

where a is the acceleration of the chair, and f is the force of friction.

The force of friction can be calculated as:

f = μN

where μ is the coefficient of friction between the chair and the floor.

We don't know the coefficient of friction or the acceleration of the chair, so we can't solve this equation directly. However, we can use the fact that the chair is sliding along the floor, which tells us that the force of friction is equal and opposite to the force you applied:

f = F sinθ = 39.0 N * sin(36.0°) ≈ 23.5 N

Therefore, we can substitute this value for f in the horizontal force equation:

F - f = ma

39.0 N * cos(36.0°) - 23.5 N = ma

Solving for a, we get:

a ≈ 0.34 m/s^2

Now we can go back to the vertical force equation and solve for the normal force:

N - mg = 0

N = mg = (110 N) + (m chair)(a)

We don't know the mass of the chair, but we can use the acceleration we just calculated to find it:

a = F/(m chair)

m chair = F/a ≈ 115 kg

Substituting this value for the mass of the chair, we get:

N = mg = (110 N) + (115 kg)(0.34 m/s^2)

N ≈ 149 N

Therefore, the normal force that the floor exerts on the chair is approximately 149 N.

The time it takes for a message sent from Earth to reach a rover on Mars varies depending on the distance between the two planets and their positions in relation to one another.

However, typically, it takes between 4 and 24 minutes for a message to travel from Earth to a rover on Mars and vice versa.

The distance between the two planets varies depending on their positions in their respective orbits around the sun. When Mars is on the opposite side of the sun from Earth, it is at its farthest distance from Earth, which can make it more difficult for signals to travel through space. At this point, the distance between the two planets can be as much as 401 million kilometers (249 million miles).

At its closest approach to Earth, Mars can be as near as 56 million kilometers (35 million miles) from us. However, it is still a long way off, and it takes time for signals to travel between the two planets.

Mars rovers have been essential to our exploration of Mars. They provide us with valuable information about the planet's geology, weather, and atmosphere, as well as its potential habitability for humans. Mars rovers have also been used to search for evidence of water and possible signs of past or present microbial life.

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Answer:

1) 50 km/h

2)80/9 m/s

Explanation:

Speed = Distance / time

Answer:

Aluminum

Explanation:

Silver is not good for magnets, it doesn't hold magnetic properties. Hope this helps.

Answer:

Aluminum

All the elements that are magnetic:

Iron

Cobalt

Nickel

Aluminum

Neodymium

Samarium

Boron

Dysprosium

Chromium

Zinc

Barium

Strontium

Bismuth

As you can see silver is not on the list of every elements that are magnetic and aluminum is.

Hope this helps!

Answer:

Electric potential energy

Explanation:

The Electric potential energy of a system is less than that carried out by electrostatic forces during the development of the system (as long as charges are initially cut infinitely).

The change in potential energy between an initial and final configuration  is equal to minus the work done by the electrostatic forces.

Answer:

the formula v = f×lambda.

v= 4.25× 5.6

therefore speed is

23.8 meters per second

Using Rayleigh's method, a set of dimensionless ratios that can be used to correlate our data is the ratio of initial velocity to the square root of the product of acceleration due to gravity and height.

In order to find a set of dimensionless ratios to correlate the data in the given experiment, we can use Rayleigh's method. Rayleigh's method involves selecting a set of relevant physical quantities and combining them in such a way that the resulting ratios are dimensionless.

In this case, the relevant physical quantities are:

To create dimensionless ratios, we can choose combinations of these quantities that eliminate the units. One possible set of dimensionless ratios can be:

Ratio of initial velocity to the square root of the product of acceleration due to gravity and height:

v / √(gH)

Ratio of radius to height:

r / H

These dimensionless ratios can be used to correlate the data obtained from the experiment. By plotting these ratios against each other or against other relevant parameters, it may be possible to identify relationships or trends in the data that can be described using these dimensionless ratios.

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Rewrite the equation as

\(y = (x-1) (x-2) x^{-1/2}\)

Then by the product rule, the derivative is

\(\dfrac{dy}{dx} = (x-2) x^{-1/2} + (x-1) x^{-1/2} - \dfrac12 (x-1) (x-2) x^{-3/2}\)

and we can factorize this as

\(\dfrac{dy}{dx} = \dfrac12 x^{-3/2} \left(2 (x-2) x^{3/2-1/2} + 2 (x-1) x^{3/2-1/2} - (x-1) (x-2)\right)\)

\(\dfrac{dy}{dx} = \dfrac12 x^{-3/2} \left(2 (x-2) x + 2 (x-1) x - (x-1) (x-2)\right)\)

\(\dfrac{dy}{dx} = \dfrac12 x^{-3/2} (3x^2 - 3x - 2)\)

\(\dfrac{dy}{dx} = \dfrac{3x^2 - 3x - 2}{2x^{3/2}}\)

and optionally expanded once more (if only to match the provided "Ans") to

\(\dfrac{dy}{dx} = \dfrac32 x^{2-3/2} - \dfrac32 x^{1-3/2} - x^{-3/2}\)

\(\dfrac{dy}{dx} = \dfrac32 x^{1/2} - \dfrac32 x^{-1/2} - x^{-3/2}\)

\(\dfrac{dy}{dx} = \dfrac32 \sqrt x - \dfrac3{2\sqrt x} - \dfrac1{\sqrt{x^3}}\)

Luke Aikins successfully jumped from 25,000 ft without a parachute by landing in a net.

The jump involved the principles of air resistance and terminal velocity. By positioning his body in a way that minimized air resistance, Aikins was able to reach a terminal velocity of around 120 mph. The net was designed to absorb and disperse the force of his landing, preventing injury. Aikins also received extensive training and preparation, including simulations and practice jumps. The jump required careful planning and precise execution to ensure his safety and success.

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Answer:

calculate each person's relative strength

Explanation:

Answer:

I think it is: "calculate each person's relative strength"

Explanation:

Answer:

A wave that transmits speech, music, and other signals

Explanation:

Hope it helps

(Give a thank OR mark as brainliest if it's the right answer)

Answer:

a wave that transmits speech, music, and other signals :)

Explanation:

Answer:

During charging by conduction, both objects acquire the same type of charge. If a negative object is used to charge a neutral object, then both objects become charged negatively. ... In this case, electrons are transferred from the neutral object to the positively charged rod and the sphere becomes charged positively.

Answer:

actually I can't understand this question can you click photo and send

The standard drink measurement should contain 14 grams of pure alcohol in United States of America.

Standard drink measurement can be defined as the measurement of alcohol that is expected by an individual to consume daily without having a bad health effect.

In the United States of America, an amount of 14 grams of pure alcohol which can be found in 12 ounces of beer is regarded as normal.

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Answer:

54m

Explanation:

12+15+15+12

15m 12m 30m

15m 12m 24m

__. ____ ___

30m 24m 54m

Statement D about pneumatic systems is true. Pneumatic systems are cleaner than hydraulic systems.

Pneumatic systems are employed in a wide range of manufacturing and assembly applications. They can be used to transport objects on production lines as well as in maintenance facilities.

In hydraulic systems liquid is used as fluid for the force transmission. While in the pneumatic system air is used causing more cleanliness in the system.

The pneumatic systems are cleaner than hydraulic systems.

Hence, a statement D about pneumatic systems is true.

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When a glass rod is rubbed with a neutral silk cloth, the glass becomes positively charged, and the silk cloth acquires a negative charge.

The process of rubbing the glass rod with the silk cloth causes the transfer of electrons between the two materials. Electrons, which have a negative charge, move from the silk cloth to the glass rod. As a result, the glass rod gains electrons and becomes negatively charged, while the silk cloth loses electrons and becomes positively charged.

The transfer of electrons leads to an imbalance of charges between the two materials, resulting in opposite charges on the glass rod (positive) and the silk cloth (negative). Therefore, the silk cloth acquires a negative charge when the glass rod is rubbed with it.

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Net force on center particle = \(-3.26 * 10^{-3} N\), Net force on left particle = +1.28 x \(10^{-3} N\)

Coulomb's law states that the force between two point charges is given by: \(F = kq1q2/r^2\)

We can calculate the force between the center particle and the left particle, and the force between the center particle and the right particle:

F_left-center =\(kq\_leftq\_center/r\_left\ -center^2\)

\(F\_left-center = (9.0 * 10^9 N*m^2/C^2) * (-55 \mu C) * (+45 \mu C) / (0.72 m)^2\)

F_left-center = \(-1.28 * 10^{-3} N\)

F_center-right = \((9.0 * 10^9 N*m^2/C^2) * (+45 \mu C) * (-78 \mu C) / (0.72 m)^2\)

F_center-right = \(-1.98 * 10^{-3} N\)

To calculate the net force on the center particle:

Net force on center particle =\(F\_left-center + F\_center-right\)

Net force on center particle = \((-1.28 * 10^{-3} N) + (-1.98 * 10^{-3} N)\)

Net force on center particle = \(-3.26 * 10^{-3} N\)

To calculate the net force on the left particle:

Net force on left particle = - F_left-center

Net force on left particle = - \((-1.28 * 10^{-3 }N)\)

Net force on left particle = +1.28 x \(10^{-3} N\)

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Answer:

Mass:  Choices 1, 2, 4, 6

Weight: Choices 3, 5, 7, 8

Hope this helped! Please mark Brainliest if correct.

Answer:

Work=force × distance

=45×15

=675

Explanation:

need thanks and make me brainiest if it helps you

The Poynting vector for the given electric and magnetic fields is S = 33.12^i - 57.84^j + 2.56^k (units: W/m²).To determine the Poynting vector, we can use the formula:

S = E x B

where S is the Poynting vector, E is the electric field vector, and B is the magnetic field vector.

Given:

E→ = (80.0^i + 32.0^j - 64.0^k) N/C

B→ = (0.200^i + 0.0800^j + 0.290^k) µT

Let's convert the magnetic field from µT to T by multiplying it by 10^-6.

B→ = (0.200^i + 0.0800^j + 0.290^k) T

Now we can calculate the cross product of E→ and B→ to find the Poynting vector:

S = E x B

Expanding the cross product, we get:

S = (E_y * B_z - E_z * B_y) i + (E_z * B_x - E_x * B_z) j + (E_x * B_y - E_y * B_x) k

Plugging in the given values, we have:

S = (32.0 * 0.290 - (-64.0) * 0.0800) i + ((-64.0) * 0.200 - 80.0 * 0.290) j + (80.0 * 0.0800 - 32.0 * 0.200) k

Simplifying the calculations, we find:

S = 33.12 i + (-57.84) j + 2.56 k

Therefore, the Poynting vector for the given electric and magnetic fields is S = 33.12^i - 57.84^j + 2.56^k (units: W/m²).

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A:

In this experiment,

✔ temperature and surface area

were intentionally manipulated. These were the independent variables.

The dependent variable measured was

✔ time of the reaction

Which observation was a sign that a chemical reaction was occurring in this experiment?

✔ formation of gas bubbles

Use the drop-down menus to answer the questions.

As the temperature of the reaction increases, what happens to the average time for the tablet to dissolve?

✔ decreases

A shorter time of reaction indicates a

✔ faster

rate of reaction.

Based on the data shown in the graph, what would be the most reasonable estimate for the time required for the same reaction at 30°C?

✔35 seconds

Use the drop-down menus to answer the questions.

Which form of the sodium bicarbonate tablet has the most surface area?

✔ crushed

As the surface area increases, what happens to the average time required for the reaction?

✔ decreases

Use the drop-down menus to answer the questions.

As the amount of surface area increases, what happens to the rate of this reaction?

✔ The rate is faster.

If the antacid tablet were broken into eight pieces, what would be a reasonable estimate for the time of reaction?

✔ 28 seconds

Why is it important to keep the temperature and the amount of water the same when testing surface area?

The temperature and the amount of water need to be kept the same so that the only variable that changes is the surface area.

Which procedures were followed in this lab to decrease experimental error? Check all that apply.

A C F

In science class, Blaine’s teacher puts one glow stick in a cup of hot water and another glow stick in a cup of cold water. She asks the students to think about how the temperature of the water will affect the chemical reaction that occurs inside the glow stick once it is bent and starts to glow.

Which glow stick will be brighter once it is bent? Explain your answer:

Sample response: The glow stick that was in the cup of hot water will be brighter once it is bent. The production of more light is evidence that the chemical reaction in the glow stick is happening faster. The reaction happens faster, because increasing the temperature increases the rate of a chemical reaction.

If a friend is making lemonade from an instant mix, which set of conditions would lead to a faster rate of dissolving the mix in the pitcher of water?

Warm water and powdered lemonade

Explanation: got it right on edge

Answer:

i am the best star ever

Explanation:

Answer:

glass if for a good view, but for absorbing heat concrete and brick is the best

Explanation:

wood is not a good idea bc it can cause fires from too much heat and it absorbs less heat but all of that depends on how good the material your using

When we are designing a new home for a cold climate and we want one room in the house to be warmed by the Sun's energy. The material that would be best to use for transmitting visible light into the room would be Glass. The correct option is C.

The energy emitted by the Sun as a form of thermal electromagnetic radiation is known as solar energy. This solar energy is produced by nuclear fusion in the center of the Sun. Solar energy is a form of renewable source of energy.

Solar energy has many advantages but it has a high initial investment.

The solar energy radiation depends upon the latitude and longitude of the location as the sunlight varies throughout the year as well as by the positioning of the sun according to the position of the earth with respect to the sun.

Generally considered the value of the solar constant is 1367 watt/ meter².

as we want one room of the house to be warmed by the sun's energy Glass would be the ideal material for transmitting visible light into the room.

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Answer:

1. A car moving 40 mph has four times as much kinetic energy as one moving 20 mph, while at 60 mph a car carries nine times as much kinetic energy as at 20 mph. Thus a modest increase in speed can cause a large increase in kinetic energy.

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Answer:

a car moving 40mph has four times as much kinetic energy as one moving 20 mph, while at 60 mph a car carries nine times as much kinetic energy as at 20 mph.

if you need any more info just dm me