Can someone solve my vector addition problem I created?


Harry travels 40 meters east and then 45 meters south in an effort to catch the snitch in a quidditch match. At the same time, Voldemort who was 40 meters away, came racing 30 meters west towards Harry, then he went south of west at 25 degrees crashing into harry. What is the resultant vector

Answer:

1.47 s

Explanation:

From the question,

s = 2d/t................... Equation 1

s = speed of sound in air, d = distance between the boy and the hill, t = time to hear the echo.

make t the subject of the equation

t = 2d/s............... Equation 2

Given: d = 250 meters

Constant: s = 340 m/s

Substitute these values into equation 2

t = (2×250)/340

t = 500/340

t = 1.47 s

Answer:

1) Used in optical instruments such as telescopes.

2) Used to form mirages

Explanation:

1) Perhaps the simplest example of this is the astronomical refractor telescope with a right-angle eyepiece holder. Astro scopes mostly point at things high in the sky, but it is inconvenient to place your eye low to look up through the scope, so the light path is bent 90 degrees just before the eyepiece. This can be done with a mirror, but using a simple 45 degree prism (internal angles 45, 45, and 90 degrees) will do the 90 degree bend more efficiently.

2) So when a light pass from cold air to hot air light tends to bend from its path which is known as refraction. As the light get refracted it reaches to a point where the light tends to form 90 degree angle.

Answer:

I'm thinking Distillation

Explanation:

I'm not sure, but convection and conduction are insulators. It's between radiation and distillation if im not mistaking.

Answer:

The two most common advantages of the ring system are as follows:

- Voltage drop across the circuit is less or negligible when compared with the tree system.

- More appliances can be connected across the circuits as the supply is radially distributed across the space

We have that the  advantages of ring system wiring is given as

Question Parameters:

Generally, A ring system wiring is  wiring method where we see the sockets and distribution outlets to be connected in a ring-like manner.

We have that its advantage are

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Answer:

The best statement that explains the student's observation is: "The water is not a smooth surface after the rock is dropped in the pond." When the rock is dropped in the pond, it creates ripples and waves that disturb the smooth surface of the water. As a result, the reflection becomes less clear because the disturbed surface scatters the light and creates a distorted image. This is a common phenomenon observed when a disturbance is created on the surface of water, like when you throw a stone or object into it.

Answer:

Jupiter is the largest planet in the solar system, but it's Saturn—the solar system's second largest planet—that takes the prize for least dense. It's less dense than water, which has led many people to postulate that it would float.

Answer:

The world would be fine

Explanation:

Answer:

(b) In this case, both disks reach the same maximum height.

(d) In this case, the disk with larger mass would reach a greater maximum height than the lighter disk because the gravitational force will be greater and this would be greater than the frictional force that opposes the motion. Therefore, the greater mass disk will be able to overcome the frictional force and reach a greater maximum height.

Answer:

Explanation:

im confused

Answer:. B

Explanation: how this helps sry if I'm wrong

The individual effect of salinity reduced organism performance in 43% of the observations, including decreased survival and growth, increased osmolyte content in bodily fluids, altered metabolic rates, etc.

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empty space or vaccum the Electro magnetic wave travels the fastest.

Answer:

his acceleration rate is -0.00186 m/s²

Explanation:

Given;

initial position of the car, x₀ = 100 miles = 160, 900 m ( 1 mile = 1609 m)

time of motion, t₀ = 60 minutes = 60 mins x 60 s = 3,600 s

final position of the car, x₁ = 150 miles = 241,350 m

time of motion, t₁ = 100 minutes = 100 mins x 60 s = 6,000 s

The initial velocity is calculated as;

u = 160, 900 m / 3,600 s

u = 44.694 m/s

The final velocity is calculated as;

v = 241,350 m / 6,000 s

v = 40.225 m/s

The acceleration is calculated as;

\(a = \frac{\Delta V}{\Delta t} = \frac{v- u}{t_1 - t_ 0} = \frac{40.225 - 44.694}{6000-3600} = -0.00186 \ m/s^2\\\\\)

Therefore, his acceleration rate is -0.00186 m/s²

The term that is defined as a group of elements or parts that interact to form a complex whole is known as system. A system refers to a group of interacting, interrelated, or interdependent elements forming a complex whole.

A system can be either natural or artificial. Examples of natural systems include the nervous system, ecosystem, solar system, and so on.

The human-made systems include the telecommunication system, transportation system, sewage system, water supply system, and so on.

In the context of science, a system is a collection of components or subsystems that work together to perform some function.

It is a term used in various fields of study such as biology, physics, chemistry, engineering, and social sciences. A system can be described in terms of its inputs, processes, outputs, and feedback.

Summary:A system refers to a group of interacting, interrelated, or interdependent elements forming a complex whole. It can be either natural or artificial. It is a term used in various fields of study such as biology, physics, chemistry, engineering, and social sciences. A system can be described in terms of its inputs, processes, outputs, and feedback.

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The hydrogen atom is currently in the third excited state, which means its electron is in the energy level n = 4.

To emit light with the longest possible wavelength, the electron must jump down to a lower energy level. The longest possible wavelength corresponds to the smallest energy difference between the initial and final states. Therefore, the electron should jump to the n = 3 state, emitting light with a wavelength in the red part of the spectrum.
To emit light with the shortest possible wavelength, the electron should jump to the n = 1 state, which corresponds to the largest energy difference. This would emit light with the shortest possible wavelength in the ultraviolet part of the spectrum.
To absorb light with the longest possible wavelength, the electron should jump to the n = 5 state, which corresponds to the largest energy difference between the initial and final states. This would absorb light with a wavelength in the ultraviolet part of the spectrum.
Therefore, the answers are:
(a) n = 3
(b) n = 1
(c) n = 5

For a hydrogen atom in the third excited state, the following transitions occur for each scenario:
(a) To emit light with the longest possible wavelength, the hydrogen atom should jump from n = 4 to n = 3. The wavelength is longer when the energy difference between levels is smaller, which happens when the jump is to the nearest lower energy level.
(b) To emit light with the shortest possible wavelength, the hydrogen atom should jump from n = 4 to n = 1. The wavelength is shorter when the energy difference between levels is larger, which happens when the jump is to the lowest energy level.
(c) To absorb light with the longest possible wavelength, the hydrogen atom should jump from n = 4 to n = 5. The wavelength is longer when the energy difference between levels is smaller, which happens when the jump is to the nearest higher energy level.
Your answer: 5. (a) n = 1 (b) n = 3 (c) n = 5

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Answer:

Pascal's principle states that pressure increases by the same amount throughout an enclosed or confined fluid. Archimedes' principle states that the buoyant force acting on a submerged object is equal to the weight of the volume of fluid displaced by the object.

Answer:

-11.67 m/s.

Explanation:

The velocity of the second piece can be determined by the law of conservation of momentum, which states that the total momentum of a closed system remains constant.

Let's call the velocity of the second piece "v".

Before the explosion, the total momentum of the comet is 0 (since it is at rest). After the explosion, the total momentum of the two pieces is

(35,000 kg)(5 m/s) + (15,000 kg)(v).

Using the law of conservation of momentum, we can set these two momenta equal to each other and solve for v:

0 = (35,000 kg)(5 m/s) + (15,000 kg)(v)

0 = 175,000 kg m/s + 15,000 kg v

-175,000 kg m/s = 15,000 kg v

v = -11.67 m/s

So the velocity of the second piece is -11.67 m/s.

Answer:

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Equilibrium pressure of NO is 3.82 atm

The equilibrium pressure of NO is calculated from the equation of the reaction given below as follows:

N₂ + O₂ ⇄ 2 NO

Initial pressure of N₂ = 21.76 atm

Equilibrium pressure of N₂ = 21. 76 - x atm

Initial pressure of O₂ = 9.32 atm

Equilibrium pressure of O₂ = 9.32 - x atm

Initial pressure of NO = 0 atm

Equilibrium pressure of NO = 2x atm

Equilibrium constant = 0.050

0.050 = 2x²/(9.32 - x)(21. 76 - x)

2x² = 0.05(202.8 - 31.08x + x²)

2x² = 10.14 - 1.554x + 0.05x²

1.95x² + 1.554x - 10.14

x = 1.91 atm

2x = 3.82 atm

Therefore, equilibrium pressure of NO is 3.82 atm.

In conclusion, the equilibrium pressure is calculated from the equilibrium constant.

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The time for the tennis ball to reach its maximum height is 1.32 seconds.

If an item is projected upwards in an exact vertical direction, the velocity at which it is projected matches the velocity after it returns to the same height in magnitude but in the opposite sign.

First, we have to calculate the maximum height reached by the tennis ball.

The formula to calculate maximum height is:

hmax = h + V² * sin(α)² / (2 * g),

where

hmax is the maximum height

v is velocity

α is the angle of launch

g is the acceleration due to gravity

h is the initial height of the object

In the given question,

v= 13m/s

g= -9.8ms-2

h= 0

α = 90°

Thus,

hmax = 13*13 *sin(90)^2/ 2*(-9.8)

hmax= 8.62 m

Now to calculate the time taken to reach the maximum height by the tennis ball, we know that

s = ut + 1/2 at^2

s here is hmax

u=0

t we have to find

Thus,

8.62= 0 * 1/2(-9.8) *t2

t= 1.32 s

Hence, the time taken by the tennis ball to reach its maximum height is 1.32seconds.

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Answer:

v=237ml m=? density(rho) = 1.59 g/ml

density = mass/volum

mass= (density)(volume)

m=(1.59)(237)

m=376.83g

Answer:

C. reduces friction

Explanation:

Soapy water between surfaces reduces friction.

Answer

30 mi/gal * (1.61 km / mi ) /  (3.78 L/gal)   = 30 * .426 km/L = 12.8 km/L

You are unable to lift an object.

The Weight makes the object difficult to lift.

To calculate weight, we know from the formula that,

W=mg

Here in the formula,

w= the weight of the object.

m= mass of the object.

g= the acceleration due to gravity.

Also this is defined as force which acting on a object due to gravity. This kind of force usually it acts downwards.

This type of force has to overcome for it to be lifted up by individuals which is why Weight makes the object difficult to lift.

Now from the above discussion we can easily state that, The Weight is the property that makes the object difficult to lift.

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No. this is not true for a spherical capacitor.

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Heat waves are defined by the difference in temperature compared to the normal temperature typical of a region.

A heatwave happens when a location has extremely high maximum and minimum temperatures over the course of three days. This is taken into account in light of the area's climate and previous weather patterns.

An protracted period of unusually warm weather that frequently lasts longer than two days is known as a heat wave. Heat waves can occur both with and without a lot of humidity. They can spread out across a large region, placing many people in danger of extreme heat.

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Answer:

measurement of force amplification