Why is the following situation impossible? A battery has an emf of varepsilon = 9.20V and an internal resistance of r=1.20ω . A resistance R is connected across the battery and extracts from it a power of P=21.2 W .

Answer:

d. 0.417 m/s

Explanation:

v= ▲x/t

(350-150)/120 s

= .417 m/s

Answer:

1kg steam will have the maximum energy

D. 36 in Kr

Let's analyze all the elements in Option

By looking at all the given options we can clearly see that Krypton has the highest number of electrons as compared to the given options so It is the answer. Also with the highest mass, in the given four options.

It can be easily seen in options as the Number of electrons and mass is already written in options.

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Answer:

Explanation:

The most important thing to remember about parabolic motion in physics is that when an object reaches its max height, the velocity right there at the highest point is 0. Use this one-dimensional motion equation to solve this problem:

v = v₀ + at and filling in:

0 = v₀ + (-9.8)(4.0) **I put in 4.0 for time so we have more than just 1 sig fig here**

0 = v₀ - 39 and

-v₀ = -39 so

v₀ = 39 m/s

The height at which the stream of water strike the building is 12.9 m.

The time of motion of the stream of water is calculated as follows;

X = Vₓt

where;

Substitute the given parameters and solve for time of motion of the water,

t = X/Vₓ

t = (48 m) / (40 x cos24)

t = 1.31 seconds

The height reached by the stream of water is calculated as follows;

h = Vyt - ¹/₂gt²

where;

Substitute the given parameters and solve for the height reached by the stream of water

h  = (40 x sin24)(1.31)  -  ¹/₂(9.8)(1.31)²

h = 12.9 m

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Answer:

1200 watts at a standard 120v draws 10 amps

Explanation:

can you show me the answer of science

The magnetic field strength at a point 1.6 mm radially from the center of the wire leading to the capacitor depends on the current flowing through the wire and the distance from the wire.

The magnetic field around a current-carrying wire can be calculated using the Biot-Savart law. This law states that the magnetic field at a point in space due to a current-carrying wire is proportional to the current flowing through the wire and inversely proportional to the distance from the wire.

Ampere's law states that the magnetic field strength around a current-carrying wire is directly proportional to the current in the wire and inversely proportional to the radial distance from the wire. To calculate the magnetic field strength at a point 1.6 mm radially from the center of the wire, you need to first convert the radial distance to meters (1.6 mm = 0.0016 m) and then apply the formula B = (μ₀ * I) / (2 * π * r) using the given current value (I).

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Answer:

38.775N

Explanation:

A=(f-i)/t, where a=acceleration, f=final velocity, i=initial velocity, and t=time

A=(0-47)/0.2

A=-47/0.2

A=-235m/s^2

Use that acceleration and plug it into this equation

F=ma

F=0.165*-235

F=-38.775N

The glove exerts an equal and opposite force on the ball of 38.775N of force.

Convective heat transmission creates the thermal plume of the candle. The main method of heat energy transport in a home or structure is convection.

Three processes—conduction, radiation, and convection—transfer heat from and to objects, including you and your house. Heat transfers through solid materials by conduction. On hot days, heat is transferred into your house through the walls, windows, and roof.

There are three major ways that heat energy can be moved from one location to another. The movement of matter particles carries heat energy in CONVECTION. Particle vibration in CONDUCTION transfers heat. Electromagnetic waves directly transport heat in RADIATION.

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Answer:

False

Explanation:

The formula of force that exists between two charges is expressed as;

F = kq1q2/r²

If two charges separated by one meter exert a 9 N force on each other, the;

9 = kq1q2/1²

9 = kq1q2 ..... 1

If the charges are pushed to a 3 meter separation, then;

F =  kq1q2/3²

F =  kq1q2/9 .... 2

Divide both equations;

9/F = (kq1q2)/ kq1q2/9

9/F =  kq1q2 * 9/ kq1q2

9/F = 9

F = 9/9

F = 1N

Hence if the charges are pushed to a 3 meter separation, then the force on EACH charge will be 1N. Hence the answer is False

The Energizer 522 V battery can operate such a relay for approximately 0.69 h.

The power consumption of the relay's coil is 6.75 W. The Energizer 522 V battery has a capacity of 522 mA. To calculate how long the battery can operate the relay, we need to know the current draw of the relay in mA.

Since the current draw of the relay is 750 mA, we can use the following formula:

Time (h) = Battery Capacity (mA) / Current Draw (mA)

Time (h) = 522 mA / 750 mA

Time (h) = 0.69 h

Therefore, the Energizer 522 V battery can operate such a relay for approximately 0.69 h.

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Answer:

2970dB

Explanation:

30 x99=2970

Answer:

F = M a    where F is in lbs, M in slugs and a in ft/s^2

Apparently this system is motionless so

T + 15 is the downward force on the mass of 15 lbs

1 slug * 32 ft/s^2 is 32 lbs the weight of the other block

It takes a force of 32 / 2 = 16 lbs on the cable to support this weight

16 lbs = T + 15 lbs

T = 1 lbs

Answer:

Newton's Second Law tells us that the more mass an object has, the more force is needed to move it. A larger rocket will need stronger forces (eg. more fuel) to make it accelerate. The space shuttles required seven pounds of fuel for every pound of payload they carry.

Explanation:

solution

Given

mass= 20kg

velocity =3m/s

K.E=?

K.E= ½mv²

½×20×3²

½×20×9

½×180

90 J

It must be either speeding up, or slowing down, or turning. There are no other possibilities.

Answer:

B. Time

Explanation:

Answer:

Displacement

Explanation:

The angle of slope if the sled carrying a 30 kg child which is moving at a constant speed is 12.7°

Given that,

Force, F = 100 N

Mass, m = 10 + 30 = 40 kg

Angle at which the force is applied, θ = 30°

Resolving the force applied into its horizontal and vertical components,

cos θ = \(F_{x}\) / F

\(F_{x}\) = 100 * cos 30° = 100 * 0.866

\(F_{x}\) = 86.6 N

A force due to the weight of the cart is applied on the ground which is directly vertical downwards. But the slope is at an angle. So resolving this force into its horizontal and vertical components.

sin θ = \(w_{x}\) / w

w = m g

w = 40 * 9.8

w = 392 N

Given that the velocity when travelling up the slope is constant. So the acceleration is zero.

Σ \(F_{x}\) = m a = 0

\(F_{x}\) - \(w_{x}\) = 0

\(w_{x}\) = 86.6 N

θ = \(sin^{-1}\) ( 86.6 / 392 ) =  \(sin^{-1}\) ( 0.22 )

θ = 12.7°

Therefore, the angle of slope if the sled carrying a 30 kg child which is moving at a constant speed is 12.7°

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Climate change is the reason for a lot of factors such as:

Heat-trapping Greenhouse Gases And The Earth's Climate

Greenhouse Gases

Reflectivity or Absorption of the Sun's Energy

Changes in the Earth's Orbit and Rotation

Variations in Solar Activity

Changes in the Earth's Reflectivity

Volcanic Activity

There's a lot more that I could list, but hopefully this will do.

Answer:

441kg

Explanation:

Lets assume Jenny is on Earth, if she is on the Earth, we time 45kg by 9.8

which means her weight on Earth would be 441kg.

Answer:

441 N is Jenny's weight

Explanation:

Given:

m = 45 kg

g = 9.8 m/s²

___________

P - ?

P = m·g

P = 45·9.8 = 441 N

The frequency of CpG (cytosine-phosphate-guanine) dinucleotides would need to be higher than expected by chance in a given DNA region in order for it to be designated as a CpG island.

Typically, a region is considered a CpG island if it is at least 200 base pairs long and has a GC content greater than 50% and an observed to expected CpG ratio of 0.6 or greater. This means that the frequency of CpG dinucleotides is higher than would be expected by chance based on the overall frequency of Cs and Gs in the genome.

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Answer:

by movement of the bones of the middle ear and by differences in the surface area of the eardrum versus the oval window.

Explanation:

Explanation:

W=Fdcos0

=45×7.3cos30

=284.4J

Answer: The energy to move the fluid is provided by the pressure on the fluid surface.

Explanation:  The frictional losses in the suction pipework and rises in the suction pipework system will reduce the fluid pressure at the pump inlet. If the pump inlet connection is removed the fluid will not flow out of the suction pipework. Hope this helps! :)

The smallest possible area of the parallelogram is 2 square units. To find the smallest possible area of the parallelogram, we need to consider the properties of a parallelogram and the given information about the distances from a point inside the parallelogram to its sides.

In a parallelogram, opposite sides are parallel and congruent. This means that if we draw a line segment from the point inside the parallelogram to each side, the distances from the point to the two opposite sides will be equal.

Since the given distances are 1, 2, 3, and 4, we can pair them up in such a way that the sums of the distances to the opposite sides are equal. One possible pairing is 1+3=4 and 2+4=6. This satisfies the condition of opposite sides being equal.

Now, we can draw the parallelogram with the point inside such that the distances from the point to the sides are 1, 2, 3, and 4. The base of the parallelogram will have a length of 4 units (1+3) and the height will be 2 units (the distance from the point to the opposite side).

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A) they are in a state of free fall.