Consider the Common Source Amplifier circuit of the figure shown, Assume kn'W/L=2mA/V², Vt=1V, DC voltage at the source terminal = 3V. Ignore ro RG₂₁ = 10M52 + 15 V RG₂=5M52 10MQ Ro 7.5 kfl Rake 100 kn 30 Rsig MO 3 kn R Perform the dc analysis to find MOSFET transconductance gm Draw and label the small signal π model. vo Find Vsig = ww 4I Raz 10 km] RD=7₁5k√2 Rs=3kr R₂=10k52 Rsig = lookr (2) (2) (2)

D. Black represents the lowest surface temperature for a star.

Surface temperature refers to the temperature of the surface of an object or a material. In astronomy, it usually refers to the temperature of the outer visible layer or "surface" of a star. This temperature can be estimated by measuring the radiation emitted by the star and analyzing its spectrum.

Here,
Black color refers to objects that absorb all colors and do not reflect any, indicating that they do not emit any significant radiation. Stars with low surface temperatures are not hot enough to emit visible light, so they appear black or invisible to the eye. However, they still emit some radiation, usually in the form of infrared light, which can be detected using specialized equipment.

Of the colors listed, red is actually the color associated with the lowest-temperature stars that are visible to the eye, while blue is associated with the hottest. However, stars with even lower surface temperatures will not emit visible light and would be invisible or appear black.

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Answer:

aluminum foil and cotton

Explanation:

It was found that the aluminum foil and cotton were the best insulators for keeping the water cold while the Styrofoam sheets and the bubble wrap were the worst two insulators for keeping the water cold.

Answer:

D) the moon would stay in one position relative to earth and sun

if the moon were always opposite the sun we would always see a full moon

The sun rotates about the earth once every 366 days (if the earth did not rotate we would see a complete rotation of the sun every 366.25 days)

In one year there 365.25 rotations of the sun about the earth

366.25 days for the earth to rotate - 1 day because of the earth about the sun = 365.25 the length of a day that we observe

(Note the difference between a "sidereal" day and an "astronomical" day)

Answer: Gravitational forces are action-at-a-distance forces

Explanation:

Gravitational forces are action-at-a-distance forces that act between two objects even when they are held some distance apart. For example If you watch a roller coaster car move along its course, then you are witnessing an action-at-a-distance.

Divergent boundaries are the result of the upward movement of material from the mantle. This leads to sea floor spreading and the creation of new lithosphere.

Answer:

Here Is An OverView of What I Know About Science:

To understand what science is, just look around you. What do you see? Perhaps, your hand on the mouse, a computer screen, papers, ballpoint pens, the family cat, the sun shining through the window …. Science is, in one sense, our knowledge of all that — all the stuff that is in the universe: from the tiniest subatomic particles in a single atom of the metal in your computer's circuits, to the nuclear reactions that formed the immense ball of gas that is our sun, to the complex chemical interactions and electrical fluctuations within your own body that allow you to read and understand these words. But just as importantly, science is also a reliable process by which we learn about all that stuff in the universe. However, science is different from many other ways of learning because of the way it is done. Science relies on testing ideas with evidence gathered from the natural world. This website will help you learn more about science as a process of learning about the natural world and access the parts of science that affect your life.

Explanation:

Science helps satisfy the natural curiosity with which we are all born: why is the sky blue, how did the leopard get its spots, what is a solar eclipse? With science, we can answer such questions without resorting to magical explanations. And science can lead to technological advances, as well as helping us learn about enormously important and useful topics, such as our health, the environment, and natural hazards. Without science, the modern world would not be modern at all, and we still have much to learn. Millions of scientists all over the world are working to solve different parts of the puzzle of how the universe works, peering into its nooks and crannies, deploying their microscopes, telescopes, and other tools to unravel its secrets. I Hope This Helps.

Explanation:

lighting converts heat energy.

hope you like this .

if the model must be placed 3.00 mm from the mirror, the radius of curvature what will be needed is around 6.10 m.

To determine the radius of curvature needed for the spherical mirror, we can use the mirror equation:

1/f = 1/do + 1/di

where:

f is the focal length of the mirror,

\(D_o\) is the object distance (distance from the object to the mirror), and

\(D_i\) is the image distance (distance from the image to the mirror).

Given:

Height of the virtual image (\(H_i\)) = 2.33 m

Height of the model elephant (\(H_o\)) = 37.0 cm = 0.37 m

Distance of the model from the mirror (\(D_o\)) = 3.00 m

Using the magnification equation:

magnification (m) = -\(H_i\)/\(H_o\)= -\(D_i\)/\(D_o\)

Substituting the values, we have:

-2.33/0.37 = -di/3.00

Simplifying the equation:

\(D_i\) = (-2.33/0.37) * 3.00

\(D_i\) ≈ -18.56 m

The negative sign indicates that the image is formed behind the mirror.

Now, let's calculate the focal length and radius of curvature:

1/f = 1/\(D_o\)+ 1/\(D_i\)

1/f = 1/3.00 + 1/(-18.56)

1/f = (1 - 0.054) / 3.00

1/f ≈ 0.982 / 3.00

f ≈ 3.05 m

The focal length (f) is positive, indicating a concave mirror.

Since the focal length (f) is half the radius of curvature (R), the radius of curvature is:

R = 2 * f ≈ 2 * 3.05 ≈ 6.10 m

Therefore, the radius of curvature needed for the mirror is approximately 6.10 m.

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Complete question:

A magician wishes to create the illusion of a 2.33-m-tall elephant. He plans to do this by forming a virtual image of a 37.0 cm tall model elephant with the help of a spherical mirror.

a) If the model must be placed 3.00 m from the mirror, what radius of curvature is needed? (Include the sign of each answer.)

How far from the mirror will the image be formed? (Enter a negative value if the image forms behind the mirror.)

Answer:

like repel unlike attract

Explanation:

mmwwwwwww

Answer:

No speed is when there is a line on the horizontal axis where speed=0. Constant speed is when there is a horizontal line above the horizontal axis.

Explanation:

To explain the tangent plane to the surface, `z = 53 − x² − 2y²` at the point `(3, 2, 6)`, let us first determine the partial derivatives of `z` with respect to `x` and `y`.

Partial derivative of `z` with respect to `x`, `∂z/∂x = -2x`Partial derivative of `z` with respect to `y`, `∂z/∂y = -4y`Now, let's find the gradient vector `grad z` at `(3, 2, 6)` and the value of `z` at `(3, 2)`.gradient vector `grad z = (-2x, -4y, 1)`gradient vector `grad z = (-6, -8, 1)` at `(3, 2, 6)`.Value of `z` at `(3, 2)` is given by `z = 53 - 3² - 2(2)² = 39`.

Therefore, the equation of the tangent plane to the surface `

z = 53 − x² − 2y²` at `(3, 2, 6)` is:

`z - 6 = -6(x - 3) - 8(y - 2)`

which can be written as:`6x + 8y + z = 50`Thus, the equation of the tangent plane to the surface `z = 53 − x² − 2y²` at the point `(3, 2, 6)` is `6x + 8y + z = 50`.

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ANSWER

False.

EXPLANATION

In radioactive decay (or nuclei decay), an unstable nucleus emits radiation into a nucleus that is table and has less energy and a lower mass.

Therefore, nuclei decay from a less stable form to a more stable form.

The answer is false.

If the elliptical orbit of mercury were more eccentric, its precession rate would be larger than it is now.

Here's why mercury's orbit is most eccentric, Orbits of most planets are eccentric. Earth's orbit is slightly eccentric compared to mercury, because mercury is the closest planet to the sun, and not earth.

Why is Mercury orbit elliptical?

Orbits are caused by the planet's interactions with the sun as it moves around by the gravity of the sun.

What is the precession of Mercury?

The precession of Mercury's orbit is measured to be 5600 seconds of arc per century (one second of arc = 1/3600 degrees).

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We need to verify the thrid equation of kinematics here

\(\\ \tt\longmapsto v^2-u^2=2as\)

\(\\ \tt\longmapsto 20^2=2(-8)s\)

\(\\ \tt\longmapsto 400=-16s\)

\(\\ \tt\longmapsto s=|400/-16|\)

\(\\ \tt\longmapsto s=25m\)

The squirrel has a good luck ,Car gets stopped just 1m away from the squirrel .

Explanation:

According to the Question

A squirrel runs out in front of a car moving at +20m/s ( initial speed u) . The driver slams on the brakes and begins decreasing at -8m/s² ( here the acceleration is acting in opposite directions of motion a )

When Squirrel was 26 metres ( Distance from the car initially )

Using Kinematic Equation

On substituting the value we obtain

➥ 0² = 20² + 2 × -8 × s

➥ 0 = 400 - 16 × s

➥ -400 = -16 × s

➥ 400/16 = s

➥ 25 = s

So, the squirrel is 25 metres from the car .

No, Sally's list is not complete. Matter can exist in four different states: solid, liquid, gas, and plasma. All four states of matter have energy and should be included in Sally's list.

What is energy?
Energy, which is observable in the work performed as well as in the form of heat and light, is indeed the quantitative property that's also transferred to a body or a physical system in physics. Energy is a conserved resource; according to the principle of conservation of mass, energy can only be transformed from one form to another and cannot be created or destroyed. The joule is the SI's (International System of Units) measuring unit for energy (J). The kinetic energy of the a moving object, this same potential energy held by an object (for example, due to its position inside a field), the elastic energy held in a fixed material, chemical energy linked to chemical reactions, and cosmic rays conducted by electromagnetic radiation are examples of common forms of energy.

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Answer:

452.8125J/Kg°C

Explanation:

The quantity of eat absorbed by the iron is expressed as;

Q = mc∆t

Q = 1086.75 joules

m is the mass= 0.016kg

c is the specific heat capacity

∆t is the change in temperature = 175-25 = 150°C

Get c;

From the formula;

c = Q/m∆t

c = 1086.75/0.016(150)

c =1086.75/2.4

c = 452.8125J/Kg°C

Hence the specific heat capacity of iron is 452.8125J/Kg°C

The critical angle for the interface between water and crown glass is approximately 60.8 degrees.. The critical angle is the angle of incidence at which the refracted angle is 90 degrees, and the refracted ray travels along the interface between two mediums.

To calculate the critical angle for the interface between water and crown glass, we need to use Snell's law, which states that the ratio of the sines of the angles of incidence and refraction is equal to the ratio of the indices of refraction of the two mediums.

So, if we substitute the given values into Snell's law, we get:
sin(critical angle) = nwater / nglass
sin(critical angle) = 1.33 / 1.52
sin(critical angle) = 0.875
To find the critical angle, we need to take the inverse sine of 0.875:
critical angle = sin⁻¹(0.875)
critical angle = 60.8 degrees (rounded to the nearest tenth)

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Answer : The correct degree of precision is 272.94 g.

Explanation :

Precision : It is defined as the closeness of two or more measurements to each other.

For Example: If you weigh a given substance five times and you get 2.7 kg each time. Then the measurement is said to be precise.

Level of precision is determined by the maximum number of decimal places.

In the given figure, the value of mass of object is 280 g. From the given options we conclude that the 272.94 g is more close to 280 g and has maximum number of decimal places. So, 272.94 g measurement is said to be precise.

Therefore, the correct degree of precision is 272.94 g.

When you look at the moon's reflection from a ripply sea, it appears elongated because of the property of wave interference.

Interference causes waves to spread out in a way that makes them interact and produce patterns of crest and troughs.Wave interference causes the waves to overlap, producing a pattern of peaks and troughs.

The crests that are produced by the interaction of these waves will appear brighter, while the troughs will appear darker. When the waves are evenly spaced and are of equal size, the pattern appears to be uniform, with no apparent elongation.

However, when the waves are unevenly spaced and are of different sizes, the pattern becomes distorted, creating an elongated pattern. This distortion can be seen in the reflection of the moon on the ripply surface of the sea, as it appears to be stretched out and elongated.

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The acceleration of the baseball is 500 m/s².

A force is an influence that has the power to alter an object's motion. An object with mass can change its velocity, or accelerate, as a result of a force. An obvious way to describe force is as a push or a pull.

The mass of the baseball, m = 0.2 kg

The force acting on the baseball is 100 N.

By Newton's second law of motion,

F = ma

Substituting the values in the above equation,

100 N = 0.2 kg × a

a = 100 / 0.2

a = 500 m/s²

The total mass when the baseball and baseball bat are in contact is:

m = 0.2 + 0.94 = 1.14 kg

Then the acceleration will be:

F = ma

100 = 1.14 × a

a = 87.7 m/s²

The acceleration of the ball after the contact is 500 m/s².

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Answer:

He can climb 11 rungs

Explanation:

Power = 528W, Force = 800N, Time= 5s Total Distance moved = 30x cm or 0.3x m, where x is the number of rungs he climbed

Power = Work done/time

Work done = Power × time

= 528 × 5

= 2640Joules

Also Work done = Force × total distance moved

Total Distance moved = Work done/force

0.3x = 2640/800

0.3x = 33

x = 3.3/0.3

x = 11

Answer:

Mass and kinetic energy have a positive relationship, which means that as mass increases, kinetic energy increases, if all other factors are held constant.

In this state, Kinetic energy is equal to half of the product mass and velocity. SI unit is joules. So it's if the mass is doubled then the kinetic energy also gets doubled.

Answer:

1 go up

Explanation:

crude density is 9/10 of water (ice melting) so oil will go up

A block of ice floats in an oil in a vessel when the ice melts the level of oil will go up.

Explanation:

Given that a circular paddle wheel with a radius of 0.5 ft is lowered into the water and the wheel rotates at 11 rpm, we need to find the speed of the current in mph.

The formula for calculating the speed of the current is as follows:

Speed = (pi * d * rpm * 60) / 5280

where,

d = diameter of the wheel in feet

rpm = rotations per minute

We know that the radius of the circular paddle wheel is 0.5 ft, which means the diameter is 2 times the radius, or 1 ft.

d = 1 ft

rpm = 11

Speed = (pi * d * rpm * 60) / 5280

= (3.14 * 1 * 11 * 60) / 5280

= 2.09 mph

Therefore, the speed of the current is 2.09 mph (approximately).

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The magnitude of reaction at the beam due to the distributed load of 25 kN/m is 625 N.

The magnitude of reaction at the beam can be determined by calculating the total force exerted by the distributed load. In this case, the distributed load is given as 25 kN/m. To find the magnitude of reaction, we multiply the distributed load by the length of the beam.

Therefore, the magnitude of reaction is 25 kN/m multiplied by the length of the beam in meters. By performing the calculation, we obtain the value of 625 N as the magnitude of reaction at the beam due to the distributed load. This represents the total force exerted by the distributed load on the beam.

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Answer:

c.97.1j

Explanation:

yan po ang answer

Sound is transmitted through gases, plasma or blood, and liquids as longitudinal waves, also called compression waves. It requires a medium to propagate. Through solids, however, it can be transmitted as both longitudinal waves and transverse waves.

For example, when you flick the rim of a glass, the glass will vibrate imperceptibly. These vibrations move through the air and strike the ear drum of anyone within hearing range (click here to find out 'How Our Ears Hear'). In fact, these vibrations, or sound waves, can move through any medium: gas, liquid or solid.

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The speed of a bird that flies 10 km/h in a crosswind of 10 km/h is about 14 km/h.

The speed of a bird that flies 10 km/h in a crosswind of 10 km/h can be calculated using the Pythagorean theorem. The speed of the bird is the hypotenuse of a triangle with side lengths 10 km/h and 10 km/h. The Pythagorean theorem states that the square of the hypotenuse (speed of bird) is equal to the sum of the squares of the other two sides (10 km/h and 10 km/h). This means the speed of the bird is approximately 14 km/h.

The Pythagorean theorem states that the square of the hypotenuse (speed of bird) is equal to the sum of the squares of the other two sides (10 km/h and 10 km/h). This means that the hypotenuse (speed of bird) is equal to the square root of the sum of the squares of the other two sides. When we calculate the square root of 200 (the sum of the squares of 10 km/h and 10 km/h), we get approximately 14 km/h.

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