where n0 1350 cm2 /v-s, vsat 1.8 107 cm/s, and e is given in v/cm. plot electron drift current density (magnitude) versus electric fi eld (log–log scale) over the range 0 e 106 v/cm

Answer: radiation

Explanation:

it is a thermal and its a heat or fire so it should be radiation

please need brainliest

Answer:

brush

Explanation:

its correct

Answer:

B. Brush

Explanation:

Edg 2021

When the temperature of the blocks is the same as the temperature of your hand, you feel neither hot nor cold to the touch. Hence, option ( 3) is correct.

Temperature is a unit used to describe hotness or coldness. It can be stated in terms of any number of arbitrary scales and shows the direction in which heat energy will naturally flow, i.e., from a hotter body to a colder body (one at a lower temperature).

Temperature is not the same as the energy of a thermodynamic system; for instance, an iceberg has a significantly larger total heat energy than a match, despite the fact that a match is burning at a much higher temperature.

If you touch a block that is at higher than or  at lower than  the temperature of your hand, you feel hot or cold respectively. But,  when the temperature of the blocks is the same as the temperature of your hand, you feel neither hot nor cold to the touch.

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Answer:

melting ice cream

Explanation:

in order for the ice cream to melt, thermal energy (heat) must be applied to it.

Answer:

1 IS CORRECT

Explanation:

The central diffraction peak corresponds to the zeroth-order fringe, which means that n = 0The answer to the question is zero fringes.

The number of fringes contained in the central diffraction peak for a double-slit pattern can be calculated using the formula:

n = (w/d) x (L/λ)

where n is the number of fringes, w is the width of each slit, d is the distance between the centers of the slits, L is the distance from the double-slit to the screen, and λ is the wavelength of the light.

For the central diffraction peak, we can assume that the path lengths from each slit to the center of the screen are equal. This means that the path difference between the waves from the two slits is zero, and the waves interfere constructively at the center of the screen.

In this case, the central diffraction peak corresponds to the zeroth-order fringe, which means that n = 0. Therefore, we can rearrange the formula to solve for the width of each slit:

w = nλL/d

For the central peak, n = 0, so the width of each slit is:

w = 0 x λ x L / d = 0

This means that the central diffraction peak contains all of the light that passes through the slits, and there are no fringes within the peak. Therefore, the answer to the question is zero fringes.

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Answer:

63.4

Explanation:

tan-1 = 4/2

= 63.4

A mountain climber walks 2 m to his right and then climbs 4 m over the edge of a cliff. So, 63.4 degrees above the horizontal is the climber compared to her initial position.

Cliff is defined as a geological fault movement, which is the landslide which is sometimes a rock slide or falling rocks which alters the differential erosion of rock layers resulting in the formation of escarpment which is the type of cliff. The base of most rocks is sloping with scree.

Many cliffs also include rock shelters or subsidiary waterfalls which are often the end of a ridge where a cliff ends, leaving behind mushroom rocks or other types of rock columns.

For above given example,

Base of the triangle which is the right direction of rock climber- 2m

Perpendicular of the triangle which is the side of the cliff- 4m

So, hypotenuse will be find out by \(\frac{1}{Tan}\) which is equals to 4/2

tan-1 = 4/2

= 63.4°

So, 63.4 degrees above the horizontal is the climber compared to her initial position.

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Answer:

B and D

Explanation:

Answer:

55N

Explanation:

Using Newton's second law of motion:

F=ma

Force=mass × acceleration

F=25×2.2

F=55N

So 55 Newtons are needed

The total open-circuit voltage that is received is 19.41V.

Solution:

RCHP traveling in the z-direction

E = E₁₀ cos(wt - βz) + Ey₀ sin(wt - βz)

E = \(\sqrt{E_{y0}^{2} + E^{2} y_{0}\) = \(\sqrt{E^{2}_{O} } +E^{2}_{O}\) = \(\sqrt{2} .Eo\)

=  \(\sqrt{2} Eo = 19.41 = Eo = 19.41\)

Open circuit voltage is the voltage difference measured between two terminals when no current is being drawn or supplied. Short-circuit current is the current that flows when the voltage difference between terminals is forced to zero. No current flows in the circuit, but there is a voltage drop between the two points.

As a result, in an open circuit, the current through it is zero but the voltage is present. The current becomes zero and the power equals VI. When an open circuit is introduced, current flow through the circuit is interrupted. The voltage drop across each resistive element is zero when no current is flowing. However, the source potential difference appears to be open.

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The same-side exterior angles are not congruent, they are supplementary. The same side exterior angles are formed and they have a sum of 180 degrees.

Congruent refers to having the same precise size and shape. Even if we flip, turn, or rotate the forms, their shape and size need to remain constant. If it is possible to superimpose one geometric figure onto the other such that they correspond throughout, then the two are said to be congruent, or to be in the relation of congruence.

In general relativity, a congruence (more precisely, a congruence of curves) is the collection of integral curves of a (never vanishing) vector field in a four-dimensional Lorentzian manifold that is used to physically represent spacetime.

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Answer: Friction force

Happy To help ;)

Explanation:

Answer:

the capacity to do work is called energy

The length of the aluminum flagpole will increase by 0.00881 m as the temperature increases by 15.

The length of an aluminum flagpole may not change with temperature. While thermal expansion can cause materials to change in size when heated or cooled, aluminium, as a metal, is not significantly affected by temperature changes. As such, the length of an aluminium flagpole is unlikely to be significantly affected by changes in temperature.

Calculate the Coefficient of Linear Expansion for Aluminum

The coefficient of Linear Expansion for aluminum is about 0.000023 per degree Celsius

Calculate the change in length

Change in length = (Coefficient of Linear Expansion x Original Length x Change in Temperature)

Change in length = (0.000023 x 39.4 m x 15) = 0.00881 m

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Explanation:

Velocity = displacement / time

v = √((58 m)² + (135 m)²) / (12 min × 60 s/min)

v = 0.20 m/s

to find the modulus of elasticity MoE at 23% of moisture content based on the already given modulus of elasticity of 12% moisture content we need to consider a shrinkage behavior of material. the expected MoE comes out to be approximately \(6,836 N/mm².\)

given information:

Modulus of elasticity at 12% moisture content =7,920 N/mm²

resultant shrinkage or final shrinkage percentage FSP = 30%

To calculate the expected MoE at 23% moisture content we have the following equation:

MoE-23% =   \(MoE-12%\) \((1 - FSP (23 - 12) / (100 - 12))\)

MoE-23% = \(7,920 N/mm² × (1 - 0.30 × (23 - 12) / (100 - 12))\)

MoE-23% =\(7,920 N/mm² × (1 - 0.30 × 11 / 88)\)

MoE-23% = \(7,920 N/mm² × (1 - 0.1364)\)

MoE-23% = \(7,920 N/mm² × 0.8636\)

MoE-23% =  \(6,836 N/mm²\)

therefore the expected modulus of elasticity at 23% moisture content comes out to be approx \(6,836 N/mm²\).

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Answer:

c

Explanation:

deceleration

Answer:

poopgshshsh

Explanation:

cacawusususu

The velocity is defined as the rate of change of displacement per unit time and the unit of velocity is m/s. Velocity is of two types and they are average velocity and instantaneous velocity.

A) From the given graph, object B traveled faster when compared with object A. Because the speed of object B increases gradually with time whereas the speed of object A decreases with time. Hence, object B travels faster.

B)The velocity increases with time 2s to 4s. The velocity is defined as the rate of change displacement by time taken. v = Δx/Δt, where Δx is the change in displacement and Δt is the time taken. Δx = final.dis - initial dis = 0-(-4) = 0+4 = 4 m. Δt = final.time-ini.time = 4-2 = 2s. Thus, the velocity v = 4/2 = 2 m/s. Hence, the velocity increases gradually.

C) The acceleration is defined as the rate of change of velocity per unit time. From the given graph, the change in velocity does not change, and hence Δv = 0. Acceleration a = Δv/Δt = 0. Thus, the acceleration of the object is zero.

D) Acceleration (a) is the rate of velocity per unit time and the unit of velocity is m/s². Acceleration (a) = Δv/Δt, where Δv is the change in velocity. Δv = final.velocity - initial.velocity = 8-(-2) = 8+2 = 10 m/s. Δt = final. time-initial. time = 7-3 = 4s. a = 10/4=2.5m/s². Hence, the acceleration is 2.5m/s².

E) Force is the product of mass and acceleration. From the given, the force moves in both forward and backward directions, and hence, force is a vector quantity. F(net) = F₁+F₂=18 - 6 = 12N. The mass of the cart is 2kg.

F = ma

a = F/m

  = 12/2

  = 6 m/s²

Thus, the acceleration of the cart with a mass of 2kg is 6 m.s⁻².

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Answer:

Count the number of hydrogen and oxygen atoms on each side of the arrow.

Explanation:

Answer:

.

Explanation:

,.....................................

Hi there!

Recall the equation for momentum:
\(\large\boxed{p = mv}\)

p = linear momentum (kgm/s)
m = mass (kg)

v = velocity (m/s)

We can calculate each object's momentum and compare.

Cement truck:
\(p = 20000 \cdot 5 = 100000kg\frac{m}{s}\)

Race car:
\(p = 1000 \cdot 90 = 90000 kg\frac{m}{s}}\)

Since 100,000 > 90,000, the cement truck has the greater momentum.

To calculate the density of the baseball, we need the mass (m) and volume (V) of the baseball. The formula for density is D = m/V.

If you have the mass and volume measurements of the baseball, you can plug them into the formula to calculate the density. However, since you haven't provided the specific mass and volume values, I'm unable to calculate the density of the baseball for you. Once you have the density value, you can compare it to the acceptable density range for official baseballs, which is between 0.70 g/cm³ and 0.80 g/cm³. If the density of the baseball falls within this range, it is considered to have an acceptable density for an official baseball.

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5.83 N-E will be displacement when car travel 3km due north then 5km east.

the resultant displacement =\(\sqrt{3^2+5^2}\)

   = 5.83 N-E

Being a vector quantity, displacement has both a magnitude and a direction. The vector (or straight line) distance between an initial and final position is what is meant by this term. Knowing these two places is consequently all that is necessary to determine the resultant displacement.

Calculate the inverse tangent of the ratio of the displacement components in the y- and x-directions to determine the direction of the displacement vector.

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The intensity of the light that is emitted at different wavelengths by a light-emitting source is described by the emission spectrum. The correct option is b.

The emission spectrum is a graphical representation of the different wavelengths of light emitted by a source, and their respective intensities. It can be used to identify the chemical composition of the source, as different chemicals emit light at specific wavelengths.

The emission spectrum is related to excitation, which is the process by which the source is excited or energized to emit light. Excitation can be achieved through various means, such as heat, electricity, or radiation. The resulting emission spectrum will depend on the nature of the excitation.

On the other hand, absorption spectrum is the opposite of emission spectrum, which describes the wavelengths of light that are absorbed by a material. Incandescence refers to the emission of light by a heated material, while fluorescence and phosphorescence describe the emission of light by a material after it has been excited by light or other forms of energy. Finally, a laser is a device that emits a coherent beam of light through the process of stimulated emission.

Hence, the correct option is b.

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Answer:

D

Explanation:

LA FUERZA NETA ES LA FUERZA TOTAL DE EMPUJE MENOS EL PESO DEL

COHETE.

\(F_{y}\) = 700000 N(sen 90° - 20°) - 560000 N = 97785 N

The approximate vertical component of the net force that is propelling the rocket away from Earth is 112,000 N. Option B is correct.

The net force acting on the rocket is the sum of the thrust force and the weight of the rocket. The thrust force is pointing upwards at an angle of 20 degrees, and the weight of the rocket is pointing downwards. The thrust force is the force that is generated by the rocket engine. It is the force that propels the rocket upwards.

The weight of the rocket is the force of gravity acting on the rocket. It is the force that pulls the rocket downwards. The net force acting on the rocket is the sum of the thrust force and the weight of the rocket. If the net force is positive, the rocket will accelerate upwards. If the net force is negative, the rocket will accelerate downwards. If the net force is zero, the rocket will remain at rest.

net force = thrust force + weight

vertical component of net force = thrust force * cos(angle)

vertical component of net force = 700,000 N * cos(20 degrees) = 112,000 N. Option B is correct.

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