question 2 help me and i'll give u brainlest

Option C is correct. It has a high frequency. Wavelength is inversly proportional to the frequency. For short-wavelength, the frequency will be high.

Frequency and wavelength have an inverse connection with one another. As a result, the wave with a high frequency should have a short wavelength.

For short-wavelength, the frequency will be high.

Hence Option C is correct. It has a high frequency.

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Answer:

c <33

Explanation:

Answer: 14 speed of Earth around Sun I see 30 km/s. FALSE

15. Because car is in circle track, direction of velocity changes

And car is in accelerating motion. direction of acceleration points to

The centre of the circle. RIGHT

Explanation:

The measure of the impact human activities have on the environment in terms of the amount of greenhouse gases produced, measured in units of carbon dioxide is referred to as carbon footprint.

Carbon footprint is an estimate of the amount of carbon dioxide or other greenhouse gases produced by human activities like burning of fossil fuels, deforestation, transportation, and industrial activities. It can be calculated on an individual, household, organization, or national level. It is measured in units of carbon dioxide equivalent (CO₂e), which takes into account the amount of other greenhouse gases like methane and nitrous oxide produced by human activities.

A carbon footprint is used as an important tool in environmental management and climate change mitigation. It is used to identify the sources of greenhouse gas emissions and to develop strategies to reduce emissions and promote sustainable development.

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Answer:

Condensation is the change of water from its gaseous form water vapor into liquid water.

Explanation:

The net force on particle q2 can be calculated by finding the net electric force acting on it. The net electric force acting on a particle is the vector sum of the forces exerted by all the other charges on it.

The electric force between two charges q1 and q2 is given by Coulomb's law: F = k * (q1 * q2)/r^2, where k is Coulomb's constant, q1 and q2 are the charges, and r is the distance between them.

The force on particle q2 due to q1 will be:

F1 = k * (q1 * q2) / (0.980m)^2

The force on particle q2 due to q3 will be:

F2 = k * (q2 * q3) / (0.750m)^2

The net force acting on q2 will be the vector sum of F1 and F2.

Keep in mind, q1 and q3 have opposite charges, so they attract each other, while q2 has the same charge as q1, so they repel each other.

Note: The unit of charge is Coulomb (C), but in this problem you are given the charges in microCoulomb (uC) so you need to convert it to Coulomb.

For 1000 seconds , a current of 0.1 A flows so as to transfer charge of 100C

In the given question, we can infer from the table that the average velocity for the car upto one decimal place is 7.3 m/s.

Velocity is defined as the ratio of Displacement of a body to the time it has take for the displacement. We can find the average velocity but adding up all the velocities and then divide it by number of occurrences. Using the data, after adding up all the average velocities, we get the value as 87.497 m/s. As the number of velocities are 12, we divide the total velocity by 12 and fing the mean velocity. The mean or average velocity is : 87.497 / 12 = 7.291416. Upto one decimal place, we get the value as 7.3 m/s.

Hence the average or mean velocity from the given data is 7.3 m/s

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Answer:

t = 1.659s

Explanation:

We can use the kinematics equations to solve this questions:

v = u + at

\(v^{2} = u^{2} +2as\)

where v = Final Velocity, u = initial velocity, a = acceleration, t = time, s = displacement

a) Given information from the question,

u = \(\frac{70km}{h} =\frac{(70*1000)m}{(1*3600)s} = 19.444m/s\) (Convert km/h to m/s first)

a = \(2m/s^{2}\)

s = 35m

Now we can substitute these values into the 2nd kinematics equation to find v, final velocity.

\(v^{2} =(19.444)^{2} +2(2)(35)\\v=\sqrt{(19.444)^{2} +2(2)(35)} \\v= 22.761m/s (5.sf)\\\)

b) Now we have the final velocity, we can substitute the values into the first kinematics equation to find t , the time taken.

v = u + at

22.761 = 19.444 + 2t

2t = 22.761 - 19.444

t =\(\frac{22.761-19.444}{2}\)

t = 1.659s

Answer:

Granite is durable, as it is hard and tough.

Gneiss has resistance to pressure and mechanical impacts

Explanation:

Granite is an igneous rock. It is mostly used in building works and construction because they are very durable. They are hard and tough and they have no internal structures.

Gneiss is used for flooring, ornamental stone, tombstones because of the fact that it shows resistances to pressure and also mechanical impacts.

how they are formed in nature:

In nature, granite is formed from the cooling down of hot molten magma and it's solidification before it reaches the surface of the earth.

In nature, gneiss is as a result of igneous rock or sedimentary rocks metamorphosing. Gneiss and granite are kind of similar. When subjected to great heat, granite becomes gneiss

Answer:

1cm=10mm

10cm/0.125mm

80pages

In the peak of summer, it hasn't rained in a week, and the plants are looking rough, so watering the plants for an hour is a good idea.

However, the next day, you come back to the garden, and the plants look in worse shape than they did previously, as if none of that water made it to the plant. Plants absorb water through their roots. The root system of a plant is responsible for drawing water and nutrients from the soil. A plant's root system must be able to absorb water quickly in order for the plant to grow and thrive. When the soil around the root system is dry, the roots will stop growing and will not be able to absorb water.

It may even start to die. Watering plants during the peak of summer is important because it will help keep the soil moist and prevent the roots from drying out. However, watering a plant too much can be harmful. If a plant is overwatered, the water may not be able to penetrate the soil and reach the roots. Instead, it may just sit on top of the soil, causing the roots to rot and die. This can cause the plant to wilt and die.To summarize, if the soil around the plant is too dry, the roots may not be able to absorb the water you gave them, causing the plant to look worse than before. Conversely, overwatering can also be harmful because the water may not be able to penetrate the soil and reach the roots, causing the roots to rot and die.

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The light energy radiating from the sun is providing the light as well heat energy to the earth's surface. Similarly, the some energy in light bulbs is lost in the form of heat and that's why the bulb is warmer when touched.

Energy can neither be created nor be destroyed. But it can be transformed from one form to the other. Therefore, the total energy is conserved . That is why the energy lost from a body is equal to energy gained by other body in contact.

The transformation of electrical energy to light energy is what taking place in light bulbs. However, in all these cases, some energy is always transforming into thermal energy.

For example, the light bulbs are too hot, due to the heat lost to the surroundings. Similarly sound energy transformation also be associated with some heat loss that can be experienced from the hot coming from speakers and other musical instruments.

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Answer:material 3

Explanation:

Answer:

it's a

Explanation:

Answer:

I believe its D!

Explanation:

Kenetic energy is motion

Answer:

B my brother say that it was

The missing 4 million tons of matter are converted to energy, according to Einstein's equation \(E=mc^{2}\).

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After obtaining the greatest range and simplifying it, we arrive at the result of 9 2 m. Therefore, the greatest range for a takeoff speed of 8.4 m/s is roughly 7.2 m.

The primary formula for the range since the motion is regarded as a projectile is

R= V²o sin²2α /g

R's value is at its highest when  α= Pi /4  (or 45°)

so the value of

Rmax= V²o sin²2Pi/4 /g = 8.4² * 1 / 9.8 =7.2 m

Rmax= 7.2 m

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Answer:

Given

mass (m) =5kg

velocity (v) =7.3m/s

kinetic energy (k. e) =?

Form

\(k.e = \frac{1}{2} MV {}^{2} \\ = \frac{1}{2} \times 5 \times 7.3 {}^{2} \\ 133.23kj\)

I hope this help

Potential energy is stored in the elastic material when we stretch it by some distance.

The energy stored when a force is used to deform an elastic object is called elastic potential energy. The energy is conserved until the force is released and the object returns to its original shape, doing work in the process. Objects can be compressed, stretched, or twisted when deformed.

Elastic material produces elasticity when stretched or compressed. The more the material is crushed or stretched, the greater this force.

Springs have many applications, including bed springs.

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Answer: Planets would be pulled into the sun

Explanation:

This is the correct answer.

Number of electrodes should be attached to the left forearm to record a 3 lead ECG is option (c) 2

A 3 lead ECG uses three electrodes to measure the electrical activity of the heart from different angles. To record a 3 lead ECG, two electrodes are placed on the left forearm and one electrode is placed on the left leg. The two electrodes on the left forearm are placed in a bipolar configuration, with one electrode placed just above the wrist and the other placed just below the elbow.

The electrode on the left leg is placed on the ankle, and it serves as a reference point for the other two electrodes on the left forearm. By measuring the electrical activity of the heart from three different angles, a 3 lead ECG can provide information about the functioning of the heart and detect abnormalities in its electrical activity.

Therefore, the correct option is (c) 2

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Answer:

C.

Explanation:

As should have been explained at the very start of the lesson, it states "Whatever goes up, must come down."

Answer:

C

Explanation:

Answer:

10 million joules or 10,000 KJ

Explanation:

Work= Force x Displacement

convert 5km into meters -5km=5000m

W= 2000N x 5000m

w=10,000,000 Joules

or 10,000KJ

The velocity time graph for a body thrown vertically upward to a maximum height is given below:

What is velocity?

The pace at which an object's position changes as perceived from a particular point of view and as measured by a particular unit of time (for example, 60 km/h northbound) is defined as its velocity. Velocity is a fundamental concept in kinematics, the branch of classical mechanics that deals with the motion of bodies.

In order to be defined, the physical vector quantity known as velocity needs to have both a magnitude and a direction. Speed is a coherent derived unit whose quantity is measured in metres per second (m/s or m/s1) in the SI. Speed is the scalar absolute value (magnitude) of velocity (metric system). "5 metres per second," for example, is a scalar as opposed to "5 metres per second east," which is a vector.

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Answer:

Gravitational potential energy

Explanation:

PE = m*g*h

m = mass

g = 9.81m/s², acceleration of gravity

h = height

So m and g stay the same but the height can change so the higher you go the higher the Gravitational potential energy.

Placing a soccer ball on the top shelf increases the Gravitational potential energy

In a gravitational field the energy possessed by an object due to a change in its position called as gravitational potential energy, it is an energy that is related to gravitational force or to gravity.

When a mass of the body  (m) is moved from infinity to a point inside the gravitational influence of a source mass (M) in absence of acceleration and the amount of work done in displacing it into the source field is stored in the form of potential energy denoted with the symbol Ug.

when external force is applied, then the  position of the body changes potential energy is equal to the amount of work done on the body by the forces.

The gravitational influence on a body at infinity is zero, then the  potential energy is zero, PE = m*g*h where m = mass, g = 9.81m/s², acceleration of gravity, h = height

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Answer:

the last one

Explanation:

its the sun when the earth turns towards the sun it gives us heat not solar radiation.

Curves with equal elevation points should be added to the topmost circular contour lines because they show the form of the land surface on the map.

Contour lines are described as lines drawn on a map with equal elevation points, so elevation would be constant if you followed the contour line physically.

The characteristics of contour lines include:

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Answer:

it can be built in mine craft

Explanation:

Answer:

put 2 pistons on each side and then put the block you want the door to be and power it with redstone