This homework is meant to be in for today first lesson, please help!!!
Some power stations burn wood instead of fossil fuels to generate electricity. A coal burning power station burns 6 million tonnes of coal per kg. Coal has a average energy value of 29.25 MJ per year. Wood chip from willow trees has an energy value of 13 MJ per kg. A hectare of agricultural land can produce 9 tonnes of drt willow wood per year. If this power station burned dry willow wood instead of coal, how much agriculture land would be needed to grow the willow?

Answer:

I think B but I could be wrong

Explanation:

Electric charge inside a sealed electrical system is influenced by power input signal and component resistance. The pace at which electrons travel is called current.

The elements influence very strong a current flow is: Resistance of the cable and its cross-section. the conductor's material composition and thickness. the possible difference between the conductor's two points. the rate of electron drift and its density

The amount or fluid velocity of electrons passing a location in the circuit inside one time is known as current. Cranking amps, or amps for short, is another name for current flow. More current is going to flow whenever the voltage is greater, and less current is going to move because when voltage is lesser.

To know more about resistance visit:

https://brainly.com/question/30799966

#SPJ1

Light will reflect at the same angle off a smooth surface as when it first touches it. The direction of reflected light beams for a flat surface is the same. Specular reflection is what is happening here.

When light reflects off of a surface, it happens. Light will reflect at the same angle it was incident upon if the surface is glossy and smooth.

A smooth polished surface is what is referred to as a reflection when a light ray strikes it and bounces back. Surface reflection occurs when a light beam hits it and then leaves it.

To know more about Specular reflection visit :-

https://brainly.com/question/29191211

#SPJ1

Answer: The part of color that's reflected is the red that bounces off the paper.

Hope this helps you!!!

(☞ﾟヮﾟ)☞      ☜(ﾟヮﾟ☜)

This produces a uniform magnetic field inside the solenoid, which is useful in a variety of applications, such as in electromagnets, MRI machines, and particle accelerators.

In a solenoid, the current flows along the length of the coil in the direction of the axis of the solenoid. This is typically referred to as the "longitudinal" direction.

The magnetic field produced by a solenoid is oriented in a specific direction, which depends on the direction of the current. The magnetic field lines form closed loops around the individual turns of the coil, and the direction of the magnetic field inside the solenoid can be determined using the "right-hand rule".

If you grasp the solenoid with your right hand such that your fingers curl in the direction of the current, then your thumb will point in the direction of the magnetic field inside the solenoid. In other words, the magnetic field inside the solenoid is oriented along the axis of the coil, in the same direction as the current flowing through the coil. This produces a uniform magnetic field inside the solenoid, which is useful in a variety of applications, such as in electromagnets, MRI machines, and particle accelerators.

To learn more about electromagnets visit:

https://brainly.com/question/17057080

#SPJ11

Answer:

this is actually

Explanation:

6 points

Answer:

helppppp

Explanation:

A 23.0 mH inductor is connected across an AC generator that produces a peak voltage of 9.80 V. To find the current flowing through the inductor, we need to use the formula V = L di/dt, where V is the peak voltage, L is the inductance, and di/dt is the rate of change of current with time.

We can rearrange the formula to get di/dt = V/L. Substituting the values we have, we get di/dt = 9.80 V / 23.0 mH = 426 A/s. This means that the current flowing through the inductor is changing at a rate of 426 A/s.

To find the maximum current that will flow through the inductor, we need to use the formula I = V/R, where R is the resistance of the circuit. Since the resistance is not given, we cannot calculate the maximum current. However, we know that the inductor will oppose any changes in the current flowing through it, and this opposition is known as inductive reactance. The formula for inductive reactance is XL = 2πfL, where f is the frequency of the AC voltage.

If we assume that the frequency is 60 Hz (typical for AC power in the US), then the inductive reactance will be XL = 2π(60 Hz)(23.0 mH) = 8.70 Ω. This means that the inductor will act as a resistance of 8.70 Ω to the flow of current. Therefore, the maximum current that will flow through the inductor will depend on the resistance of the circuit.

In summary, to find the current flowing through the inductor, we used the formula V = L di/dt, where V is the peak voltage and L is the inductance. To find the maximum current, we need to know the resistance of the circuit, but we can calculate the inductive reactance using the formula XL = 2πfL.

To know more about inductor visit:-

https://brainly.com/question/31503384

#SPJ11

Answer:

0.58

Explanation:

Sinẞ = opposite ÷ hypotenuse

Sinẞ = 5 ÷ 8.6

Sinẞ = 0.5814

Sinẞ ≈ 0.58

Answer:    0.58

Explanation:

hope this helps

Fun Fact: Peanuts aren’t technically nuts

Answer:

because these units are derived from combinations of two or more of the seven base units

Answer:

the potential energy is 19.6J

the kinetic energy is 0.0.004J

Explanation:

using the formulas

P.E = mgh while

K.E =mv²/

Answer:

Climate scientists compare the tree growth records to local weather records. For locations where a good statistical match exists between tree growth and temperature or precipitation during the period of overlap, the ring widths can be used to estimate past temperature or precipitation over the lifetime of the tree.

1. The height of the image is 0.287 m.

2. The wavelength of the light is 563 nm.

1. The image distance, denoted as `i`, is determined by the lens formula: `1/f = 1/o + 1/i`, where `f` represents the focal length, `o` is the object distance, and `i` represents the image distance. Given `f = 28.3 cm` and `o = 1.78 m`, we need to convert the object distance from meters to centimeters: `o = 1.78 m = 178 cm`. Therefore, the image distance is calculated as follows:

i = (1/f - 1/o)^-1 = (1/28.3 - 1/178)^-1 = 24.53 cm.

The image height, denoted as `h'`, can be determined using the object height `h` and the magnification `m` relationship: `h' = m * h`. The magnification `m` is given by `m = -i/o`, where the negative sign indicates an inverted image. Thus,

m = -i/o = -(24.53 cm)/(178 cm) = -0.138.

The image height `h'` is obtained by multiplying `h` by `m`: `h' = m * h`, where `h = 2.08 m`. Therefore,

h' = (-0.138) * 2.08 = -0.287 m.

The negative sign signifies an inverted image. Hence, the height of the image is determined as `0.287 m`, and it is inverted.

2. Bright fringes are observed at angles `theta` satisfying the condition `d sin theta = m lambda`, where `d` represents the spacing between two slits, `m` is an integer indicating the fringe order, and `lambda` denotes the wavelength of light. In this case, given `d = 1/20 mm` and `m = 1`, the angle `theta` corresponding to the first bright fringe is given by `tan theta = x/L`, where `x` represents the separation between two fringes, and `L` is the distance from the grating to the screen. With `x = 27.2 mm` and `L = 2.41 m`, we can calculate:

tan theta = (27.2 mm)/(2.41 m) = 0.01126.

Therefore, `sin theta = tan theta = 0.01126`.

Consequently, the wavelength `lambda` is determined using the formula `lambda = d sin theta / m`, where `d = 1/20 x 10^-3 m`, `sin theta = 0.01126`, and `m = 1`:

lambda = (1/20 x 10^-3 m) x 0.01126 / 1 = 5.63 x 10^-7 m = 563 nm.

In summary:

1. The height of the image is 0.287 m.

2. The wavelength of the light is 563 nm.

Learn more about wavelength

https://brainly.com/question/31143857

#SPJ11

Answer:

Constant Speed

Explanation:

Answer:

Friction, inertia and constant speed

Explanation:

The friction and inertia create an equilibrium

Answer:

the second one i guess????

Explanation:

Answer:

He closed all of the nation’s banks and ordered inspections

Explanation:

Answer:

4.18 joules of heat energy to raise a gallon of water by 1 degree celcius

Explanation:

The resulting velocity of the 500-g cart is 0 m/s. The resulting velocity of the 1000-g cart is 1 m/s.

Explanation:

H

Hydrogen

-259.14 -252.87 0.00008988 (gas, 273K)

2

He

Helium

-272.20 (under pressure) -268.934 0.0001785 (gas, 273K)

3

Li

Lithium

180.54 1347 0.534

4

Be

Beryllium

1278 2970 1.8477

5

B

Boron

2300 3658 2.34

6

C

Carbon

3527 4827

(sublimes) 2.260 (graphite)

3.513 (diamond)

7

N

Nitrogen

-209.86 -195.8 0.0012506 (gas, 273K)

8

O

Oxygen

-218.4 -182.96 0.001429 (gas, 273K)

9

F

Fluorine

-219.62 -188.14 0.001696 (gas, 273K)

10

Ne

Neon

-248.67 -246.05 0.00089994 (gas, 273K)

11

Na

Sodium

97.81 882.9 0.971

12

Mg

Magnesium

648.8 1090 1.738

13

Al

Aluminum

660.37 2467 2.698

14

Si

Silicon

1410 2355 2.329

15

P

Phosphorus

44.1 (white)

410 (red, under pressure) 280 (white) 1.82 (white)

16

S

Sulfur

113 (α)

119 (b)

106.8 (g) 444.67 2.070 (α)

1.957 (b)

17

Cl

Chlorine

-100.98 -33.97 0.003214 (gas, 273K)

18

Ar

Argon

-189.37 -185.86 0.001784 (gas, 273K)

19

K

Potassium

63.65 774 0.862

20

Ca

Calcium

839 1484 1.55

21

Sc

Scandium

1541 2831 2.989

22

Ti

Titanium

1660 3287 4.54

23

V

Vanadium

1887 3377 6.11 (292 K)

24

Cr

Chromium

1857 2672 7.19

25

Mn

Manganese

1244 1962 7.44

26

Fe

Iron

1535 2750 7.874

27

Co

Cobalt

1495 2870 8.90

28

Ni

Nickel

1453 2732 8.902 (298 K)

29

Cu

Copper

1083.4 2567 8.96

30

Zn

Zinc

419.58 907 7.133

31

Ga

Gallium

Answer: Euglena are photosynthetic

Explanation: USA test prep

Answer:

Explanation:

Let the tension in horizontal rope be T₁ and in the other rope be T₂ which is making angle of 51.3⁰

The vertical component of tension T₂ will balance the weight .

= T₂ cos 51.3 = 2.9 x 9.8

T₂ = 2.9 x 9.8  / cos 51.3

= 28.42 / .625

= 45.47 N

The horizontal component of T₂ will balance T₁

T₂ sin 51.3 = T₁

45.47 sin 51.3 = T₁

T₁ = 35.48 N .

Yes, all of the above are defined whenever they occur and denote multivariable functions and vector fields which are twice continuously differentiable on a common domain.

What is vector field?
A vector field is the assignment of the a vector to each point inside a subset of space in the fields of vector calculus and physics. For example, a vector field inside the plane could be visualised as a group of arrows, each attached to the a point in the plane and each with a specific magnitude and direction. Vector fields are frequently used to simulate various physical phenomena, such as the strength and motion of a force as it shifts through one point to the next or the speed and trajectory of a fluid moving through space.

The first expression, V . (F . Vf), denotes a multivariable function which is the dot product of a vector V and the composition of a function F with a vector field Vf.

The second expression, V . (V x Vf), denotes a multivariable function which is the dot product of a vector V and the cross product of a vector V and a vector field Vf.

The third expression, V x (V . F), denotes a vector field which is the cross product of a vector V and the dot product of a vector V and a function F.

The fourth expression, V x (V x f), denotes a vector field which is the cross product of a vector V and the cross product of a vector V and a function f.

The fifth expression, V x (V x F), denotes a vector field which is the cross product of a vector V and the cross product of a vector V and a function F.

The sixth expression, V . (V x F), denotes a multivariable function which is the dot product of a vector V and the cross product of a vector V and a function F.

To learn more about vector field
https://brainly.com/question/24332269
#SPJ4

a) 24.8 N is the downward force F exerted by the hammer.

b) In hardwood, the hammer head's downward force on the nail when it is in contact with the nail and travelling downward is 221.2 N.

a) To calculate the force F exerted by the hammer head on the nail while it is in contact with the nail and moving downward, we can use the equation:

F = m * a

Where m is the mass of the hammer head and a is its acceleration while it is in contact with the nail and moving downward. To find the mass of the hammer head, we can use the formula:

m = Fg / g

Where Fg is the weight of the hammer head and g is the acceleration due to gravity. Therefore:

\(m = 4.9 N / 9.81 m/s^2 = 0.499 kg\)

Next, we can use the formula for constant acceleration to find the acceleration of the hammer head:

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

Where u is the initial velocity of the hammer head, v is its final velocity (which is zero), a is its acceleration, and s is the distance it travels before coming to a stop. Rearranging this equation, we get:

\(a = (v^2 - u^2) / 2s\)

Substituting the given values, we get:

\(a = (0 - (3.2 m/s)^2) / (2 * 0.45 cm / 100 cm/m) = - 49.6 m/s^2\)

(Note that the negative sign indicates that the acceleration is in the opposite direction to the initial velocity.)

Finally, we can substitute the values for m and a into the equation for force to get:

\(F = m * a = 0.499 kg * (- 49.6 m/s^2) = - 24.8 N\)

Therefore, the downward force exerted by the hammer head on the nail while it is in contact with the nail and moving downward is 24.8 N.

b) If the nail is in hardwood and the distance the hammer travels in coming to rest is only 0.12 cm, we can follow the same procedure as in part a) to find the force F exerted by the hammer head on the nail while it is in contact with the nail and moving downward. The only difference is that we use a distance of 0.12 cm instead of 0.45 cm in the equation for acceleration:

\(a = (v^2 - u^2) / 2s = (0 - (3.2 m/s)^2) / (2 * 0.12 cm / 100 cm/m) = - 443.3 m/s^2\)

Substituting this value into the equation for force, we get:

\(F = m * a = 0.499 kg * (- 443.3 m/s^2) = - 221.2 N\)

Therefore, the downward force exerted by the hammer head on the nail while it is in contact with the nail and moving downward in hardwood is 221.2 N (assuming the same downward forces on the hammer as in part (a). Note that the negative sign indicates that the force is acting in the opposite direction to the initial motion of the hammer head.

To learn more about velocity  visit;

https://brainly.com/question/30559316

#SPJ4

Answer:

Solids :A solid has a definite shape and volume because the molecules that make up the solid are packed closely together and move slowly. Solids are often crystalline; examples of crystalline solids include table salt, sugar, diamonds, and many other minerals. Solids are sometimes formed when liquids or gases are cooled; ice is an example of a cooled liquid which has become solid. Other examples of solids include wood, metal, and rock at room temperature.  Liquids : A liquid has a definite volume but takes the shape of its container. Examples of liquids include water and oil. Gases may liquefy when they cool, as is the case with water vapor. This occurs as the molecules in the gas slow down and lose energy. Solids may liquefy when they heat up; molten lava is an example of solid rock which has liquefied as a result of intense heat.  Gases : A gas has neither a definite volume nor a definite shape. Some gases can be seen and felt, while others are intangible for human beings. Examples of gases are air, oxygen, and helium. Earth's atmosphere is made up of gases including nitrogen, oxygen, and carbon dioxide.  Plasma: Plasma has neither a definite volume nor a definite shape. Plasma often is seen in ionized gases, but it is distinct from a gas because it possesses unique properties. Free electrical charges (not bound to atoms or ions) cause the plasma to be electrically conductive. The plasma may be formed by heating and ionizing a gas. Examples of plasma include stars, lightning, fluorescent lights, and neon signs.

Explanation:

Answer:

A. 1st law.

Explanation:

Newton's first law of motion states that, an object or body will continue to be at rest or experience a uniform motion in a straight line at constant speed provided there's no action of an external force. Thus, unless compelled to change its state by an external force, a body will continue to be at rest or experience a uniform motion in a straight line.

The Newton's first law of motion is also known as the law of inertia; which is the tendency of a body to be at rest unless acted upon by an external force.

In this scenario, you are standing in a subway train and the train suddenly stops but your body continues to move forward. This is in accordance with Newton's first law of motion.

Hence, the sudden stoppage of the train generates a force which acts on the body thereby causing the passenger to tip or move forward.

The point on a roller coaster where the most potential energy is found is typically at the highest point of the ride, such as the top of a hill or a peak.

At this point, the roller coaster has gained the maximum elevation and, therefore, has the greatest potential energy. Potential energy is associated with the height of an object and its mass. As the roller coaster ascends, it gains potential energy due to the increase in its height above the ground. This potential energy can then be converted into kinetic energy as the roller coaster descends, providing thrilling and dynamic motion throughout the ride.

To know more about potential energy, here

brainly.com/question/24284560

#SPJ4

When the average velocity is 2.4 m/s, the horizontal 0.35 meter diameter cast iron water pipe experiences a pressure drop (P) of roughly 16457.14 kPa every 100 meters.

To determine the pressure drop per 100-meter length of a horizontal 0.35-meter diameter cast iron water pipe, we can use the Darcy-Weisbach equation. The equation is as follows:

\(\begin{equation}\Delta P = \frac{f \cdot \frac{L}{D} \cdot (\rho \cdot V^2)}{2}\)

where ΔP is the pressure drop, f is the Darcy friction factor, L is the length of the pipe (100 meters in this case), D is the diameter of the pipe (0.35 meters), ρ is the density of water, and V is the average velocity of water.

To calculate the pressure drop, we need to determine the Darcy friction factor. For a rough cast iron pipe, we can estimate the friction factor to be around 0.02.

Using the given values and the estimated friction factor, the calculation becomes:

\(\begin{equation}\Delta P = \frac{0.02 \cdot \frac{100}{0.35} \cdot (\rho \cdot 2.4^2)}{2}\)

Since the density of water (ρ) is approximately 1000 kg/m³, we can substitute this value and calculate the pressure drop:

ΔP = \(\frac{0.02 \times \frac{100}{0.35} \times 1000 \times 2.4^2}{2}\)

Let's solve the expression to calculate the pressure drop (ΔP) in kilopascals (kPa):

ΔP =  \(\frac{0.02 \times \frac{100}{0.35} \times 1000 \times 2.4^2}{2}\)

First, let's simplify the expression:

ΔP = \(\frac{0.02 \times (285.714) \times (1000 \times 5.76)}{2}\)

   = 16457.14

Therefore, the pressure drop (ΔP) per 100-meter length of the horizontal 0.35-meter diameter cast iron water pipe, when the average velocity is 2.4 m/s, is approximately 16457.14 kPa.

To know more about the cast iron water pipe refer here :

https://brainly.com/question/32455854#

#SPJ11

Complete question :

Determine the pressure drop per 100 -m length of horizontal new 0.35−m-diameter cast iron water pipe when the average velocity 2.4 m/s. Δp= kPa

I don't know man sorry hdhdhdushs

answer.4058

Explanation:

250-4300=4050

Answer:

Mass = 384.615385 gram

Answer:

Time taken for car to stop = 0.89 seconds (Approx.)

Explanation:

Given:

Mass of car = 1100 kg

Speed of car = 15 m/s

Impact force = 185,000 N

Find:

Time taken for car to stop

Computation:

Change in momentum of car = M(v) - M(u)

Change in momentum of car = 1100(0) - 1100(15)

Change in momentum of car = -16,500

Time taken for car to stop = I Change in momentum of car I / Impact force

Time taken for car to stop = I-16,500I / 185,000

Time taken for car to stop = 0.89 seconds (Approx.)

The time it takes for the car to stop will be 0.89 sec. Due to the external resistive force, the car will stop after some time.

The momentum is defined as the product of mass and the velocity of the body. It is denoted by the letter P. It occurs due to the applied force. Its unit is Kg m/s².

The change in the momentum of the car is given as;

\(\rm \triangle P = m(V-U) \\\\ \triangle P = 1100(0-5) \\\\ \rm \triangle P =-16,500 Kgm/s\)

The time taken for a car to stop will be;

\(I \triangle p= F\triangle t \\\\ \rm t = \frac{\triangle p }{F} \\\\ \rm t = \frac{|-16500|}{18500} \\\\ \rm t =0.89 \ sec\)

Hence the time it takes for the car to stop is 0.89 sec.

To learn more about the momentum refer to the link;

https://brainly.com/question/4956182