An electrical generator creates electricity by

A) By spinning a turbine with kinetic energy

B) By using Gasoline

C) By exposing a coil of wire to a changing magnetic field

D) By Aligning the magnetic domains of the coil of wire

Answer:

330m/s

Explanation:

v= total distance/ time

=3300/10

Answer:

3.4cm

Explanation:

Divide 34 by 10

Answer:

3.4 :))

Explanation:

Answer:

yes   1000 j   as I posted on the same Q elsewhere

Explanation:

Composition, energy transport through the surface, temperature, and topography are the factors in  asteroid  that contribute to the yarkovsky effect.

The Yarkovsky effect is a result of the differential heating of an asteroid's sides by sunlight, which can cause a minor thrust force to be exerted. A spacecraft called OSIRIS-REx was launched by NASA in September 2016 with the goal of capturing and collecting samples from the asteroid Bennu. In October 2020, it made a successful landing on the asteroid. In addition to gathering an asteroid sample and bringing it back to Earth, OSIRIS-REx will study the Yarkovsky effect on Bennu in order to create viable methods for diverting asteroids that are headed straight for the planet.

To know more about   asteroid   visit : https://brainly.com/question/19161842

#SPJ4

Based on the Radioactive Decay chart in the reading,  Plutonium is the element that  would emit destructive radioactive material, therefore the correct answer is option A

This radiation is released when a nucleus undergoes radioactive decay and transforms into a different isotope that may be radioactive (unstable) or non-radioactive depending on the number of neutrons and protons in the nucleus (stable).in other words one can say The ability of some unstable atoms to emit nuclear radiation spontaneously

Thus, Plutonium is the element that would emit destructive radioactive material, according to the radioactive decay chart in the reading, so option A is the appropriate response.

Learn more about radioactivity here

https://brainly.com/question/13950350

#SPJ1

Answer:

A frog has four digits on its fore legs

A frog has five digits on its hind legs

Explanation:

Biologically, digits refer to the fingers and toes of animals (mostly vertebrates).

A frog is known to have only four digits on its fore limbs (which are not webbed). They usually use this for steering themselves in the water.

A frog also has five digits on each of its hind legs. These are webbed, and are used for swimming in water.

The type of wave that occurs where two different mediums meet is known as a transverse wave. Hence, option A is correct.

Wave is the regular, systematic spread of disturbances from one location to another. The ripples that travel on water's surface are the most well-known, but waves also exist in sound, sight, and the movement of subatomic particles.

The disturbance periodically oscillates with a set frequency and wavelength in the simplest waves. In contrast to electromagnetic waves, which can travel in a vacuum, mechanical waves, like sound, need a medium to move through. The characteristics of the medium affect how a wave travels across it.

A transverse wave's crest and trough are the high and low points, respectively. The shock absorbers and rarefactions of longitudinal waves are comparable to the troughs and crests of transverse waves. The wavelength is the separation between subsequent crests or troughs.

To know more about Waves:

https://brainly.com/question/3639648

#SPJ2

Answer:

C. 199.9 s

Explanation:

3 minutes = 3×60 = 180 seconds.

the turtle moves in that time 180×10 = 1800 cm.

in other words the rabbit gave it that much head-start (it does not matter if that was at the begin of in the middle of the race).

the rabbit moves with 10×10cm/s = 100cm/s.

the rabbit needs therefore 1800/100 = 18 seconds for the

1800 cm.

at that time the turtle has added another 18×10 = 180 cm.

for which the rabbit needs 180/100 = 1.8 seconds.

during that time the turtle has added 1.8×10 = 18 cm.

and so on.

in formal mathematics this looks like this :

1800 + 10x = 100x

after x seconds of the rabbit running both will have run the same distance, and it is a tie.

1800 = 90x

x = 20 seconds

so, at that point, the rabbit was actively running for 20 seconds and raced 20×100 = 2000 cm

and the turtle was actively running for 180 + 20 = 200 seconds, and also covered 200×10 = 2000 cm.

but our question tells us that the turtle won by 10 cm.

so, the race was over a little bit before these 200 seconds (for a tie).

this means, the rabbit could not run the last 10 cm for the tie (because the race was over and the turtle had won).

the rabbit would have needed 10/100 seconds for these 10 cm.

as speed = distance/time

we need to divide distance by speed

distance/1 / distance/time

to get time.

so,

10cm/1 / 100cm/s = 10s/100 = 1/10 s

so, we need to deduct this 1/10 s from the 200 seconds of the turtle (and also from the 20 seconds for the rabbit).

the race lasted of course the whole time the turtle was running (while the rabbit was resting, officially still participating in the race with speed 0 for 3 minutes).

and so, the race was 199.9 s long.

Answer:

La fuerza que será necesaria aplicar a un cuerpo de 20kg de masa para imprimirle una aceleración a=4m/s² es 80 N.

Explanation:

La segunda ley de Newton, llamada ley fundamental o principio fundamental de la dinámica, plantea que un cuerpo se acelera si se le aplica una fuerza.

De esta manera, esta ley establece que las aceleraciones que experimenta un cuerpo son proporcionales a las fuerzas que recibe. Dicho de otra forma, la aceleración de un cuerpo es proporcional a la fuerza neta que se le aplica. Cuanto mayor es la fuerza que se le aplica a  un objeto con una masa dada, mayor será su aceleración.

La segunda Ley de Newton se expresa matemáticamente como:

F = m*a

Donde:

En este caso:

Reemplazando:

F= 20 kg* 4 m/s²

Resolviendo:

F= 80 N

La fuerza que será necesaria aplicar a un cuerpo de 20kg de masa para imprimirle una aceleración a=4m/s² es 80 N.

Answer:

it is less than the trucks initial acceleration because a truck going downhill  has a enough speed and power to turn a car into a pancake so in this case (trucks always win)

Explanation:

The white dot in the center is a white dwarf

What is a planetary nebula ?

A planetary nebula is the ejected shell of an evolved giant star. It is the shape of a spherical shell and is composed of relatively cool thing gas, which was once the outer part of the star. A planetary nebula is associated with the death of a low mass star.

What causes a planetary nebula ?

A planetary nebula is formed when a red giant ejects its outer atmosphere. The beautiful images show that a planetary nebula is a stage in the evolution of a low mass star. They last tens of thousands of years. A white dwarf is the carbon core of a red giant that has ejected its photo sphere as a planetary nebula.

Hubble space telescope :

The Hubble Space Telescope is a space telescope that was launched into low Earth orbit in 1990 and remains in operation. It was not the first space telescope, but it is one of the largest and most versatile, renowned both as a vital research tool and as a public relations boon for astronomy.

What is a white dwarf ?

A white dwarf is what stars like the Sun become after they have exhausted their nuclear fuel. Near the end of its nuclear burning stage, this type of star expels most of its outer material, creating a planetary nebula. Only the hot core of the star remains.

Learn more about A White dwarf :

brainly.com/question/13207055

#SPJ4

Answer:

Usually, a solution can have several criteria and constraints. Even though all are important, some criteria are more important than others. The same holds true for constraints. But what do you do if it's impossible for a solution to cover every criterion while avoiding every constraint? In cases like this, you can use prioritization. Listing criteria and constraints based on priority shows the relative importance of each. You will need to prioritize the criteria and constraints for each sub-problem so that you can design a solution for each one individually. Prioritization can help you compare two different possible solutions. For example, the criterion that cars travel at 15 mph through the neighborhood might be a higher priority than the constraint that homeowners are only willing to spend $10,000 on this issue. If this is the case, you would want to generate solutions that also follow the priority in mind. All criteria are important, but engineers must sometimes make a trade-off, which is a compromise or change in one or more criteria or constraints so that they can be met at the same time. This is where prioritization comes in handy as it helps determine the trade-offs. A solution that is doing a better job of meeting one criterion may result in not completely meeting another criterion. Prioritization will help you choose which solution to go with.

Explanation:

I got this from quizlet :)

Answer:

A. true

Suppose A = probability of a day occurring on the weekend

B = probability of day occurring last half of weekend

A int B = 2/7 * 1/2 = 1/7

obviously a Sun can occur only 1/7 of the time

The mass is common in potential and kinetic energy. The potential energy of an object is due to its position.

The potential energy of an object is due to its position. It can be calculated by the formula,

\(U = mgh\)

Where,

\(U\) - potential energy

\(m\) - mass

\(g\) - gravitation acceleration

\(h\) - height

The kinetic energy of an object is due to its motion. It can be calculated by the formula,

\(KE = \dfrac 12 mv^2\)

Where,

\(m\) - mass

\(v\) - velocity

Therefore, the mass is common in potential and kinetic energy.

Learn more about potential energy:

https://brainly.com/question/21288807

To find the speed of a wave in the steel wire, we can use the following formula: speed = √(T/μ) where T is the tension in the wire and μ is the linear mass density of the wire.

First, we need to find the tension (T) in the wire. The tension is equal to the weight of the ball:
T = m * g
\(T = 4.8 kg * 9.81 m/s²\)
T ≈ 47.1 N
Next, we need to find the linear mass density (μ) of the wire. We can calculate the volume of the wire using the formula for the volume of a cylinder:
\(V = π * (diameter/2)² * length\)
\(V ≈ π * (0.002 m/2)² * 2 m\)
\(V ≈ 6.2832 x 10⁻⁶ m³\)
To find the mass of the wire, we need the density of steel, which is approximately 7850 kg/m³:
mass = density * volume
mass ≈ \(7850 kg/m³ * 6.2832 x 10⁻⁶ m³\)
mass ≈ 0.0493 kg
Now we can find the linear mass density (μ) by dividing the mass by the length of the wire:
μ = mass/length
μ ≈ \(0.0493 kg / 2 m\)
μ ≈ 0.0246 kg/m
Finally, we can calculate the speed of the wave in the wire:
speed = √(T/μ)
speed = \(√(47.1 N / 0.0246 kg/m)\)
speed ≈ 44 m/s
The speed of a wave in the steel wire is approximately 44 m/s, expressed with two significant figures.

Learn more about speed of the wave here:

https://brainly.com/question/30462853

#SPJ11

Answer:

Hey There!

Let's solve....

\(v = \frac{1}{2} k{x}^{2} \\ \\ \frac{ v_{1} }{ v_{2} } = (\frac{ x_{1} }{ x_{2}}) ^{2} \\ \\ \frac{v}{ v_{2} } =( \frac{ \cancel{2}}{ \cancel{10 }}) ^{2} \\ \\ = \frac{1}{25} \\ \\ v_{2} = 25v_{1} \\ \\ = 25v \)

Hi there!

This is an example of a recoil collision.

Using the conservation of momentum:

\(p_i = p_f\)

The initial momentum is 0 kgm/s (objects start from rest), so:

\(p_f = 0\)

We are given that the 15 kg block has a velocity of 12 m/s to the left, so:

\(m_1v_1' + m_2v_2' = 0 \\\\15(-12) + 18v_2' = 0 \\\\\)

Solve for v2':

\(18v_2' = 180 \\\\v_2' = \boxed{10 m/s}\)

It is properly calibrated, and there is no external magnetic field present.

A galvanometer is a sensitive instrument used for detecting and measuring small electric currents. It works on the principle of electromagnetic induction and consists of a coil of wire suspended within a magnetic field. When a current is passed through the coil, it experiences a force due to the interaction with the magnetic field, causing the coil to rotate.

In order for a galvanometer to show a reading of zero, the following conditions must be met:

No current is flowing through the galvanometer - When there is no current passing through the galvanometer, there will be no interaction between the magnetic field and the coil, and the coil will remain stationary in its initial position.

The galvanometer is properly calibrated - The galvanometer must be calibrated to ensure that its zero position corresponds to no current passing through it. This calibration process involves adjusting the position of the coil or adding a small compensating magnet to the instrument.

There is no external magnetic field present - Any external magnetic field can cause the coil to rotate, even in the absence of current flowing through it. This can result in a false reading on the galvanometer. To prevent this, the galvanometer should be shielded from any external magnetic fields.

Overall, a galvanometer will show a reading of zero when no current is flowing through it, it is properly calibrated, and there is no external magnetic field present.

To learn more about compensating visit:

https://brainly.com/question/13755469

#SPJ11

The δg values calculated at room temperature and ice-bath temperature can be used to determine whether the solvation of borax favors products or reactants.

If the δg value at room temperature is negative, it means that the reaction favors the products, while if it is positive, the reaction favors the reactants. On the other hand, if the δg value at ice-bath temperature is negative, it means that the reaction favors the reactants, while if it is positive, the reaction favors the products.

Therefore, by comparing the δg values calculated at room temperature and ice-bath temperature, we can determine whether the solvation of borax favors the products or the reactants. If the δg value is more negative at room temperature than at ice-bath temperature, it means that the solvation of borax favors the products. Conversely, if the δg value is more negative at ice-bath temperature than at room temperature, it means that the solvation of borax favors the reactants.

In summary, the solvation of borax may favor the products or the reactants depending on the temperature and the δg values calculated.

More on solvation: https://brainly.com/question/3564103

#SPJ11

Answer:

Explanation:

The kinetic energy of an object can be found by using the formula

\(k = \frac{1}{2} m {v}^{2} \\ \)

m is the mass

v is the velocity

From the question we have

\(k = \frac{1}{2} \times 9 \times {12}^{2} \\ = \frac{1}{2} \times 9 \times 144 \\ = 9 \times 72 \: \: \: \: \: \: \: \: \: \: \: \)

We have the final answer as

Hope this helps you

The momentum flow rate through the pipe carrying liquid ammonia is 1 × \(10^6\) kg·m/s.

The flow rate of momentum (Ṁ) through the pipe can be calculated by multiplying the mass flow rate (ṁ) by the velocity (v). The speed can be determined using the equation v = ṁ / (ρA), where ρ is the density of the liquid ammonia and A is the pipe's cross-sectional area.

Given:

ṁ = 100 kg/s

A = 0.01 m²

Assuming the density (ρ) of liquid ammonia is 700 kg/m³, we can calculate the velocity (v):

v = ṁ / (ρA)

v = 100 kg/s / (700 kg/m³ × 0.01 m²)

v = 10000 m/s

Now, we can calculate the flow rate of momentum (Ṁ):

Ṁ = ṁv

Ṁ = 100 kg/s × 10000 m/s

Ṁ = 1 × \(10^6\) kg·m/s

Therefore, the momentum flow rate through the pipe is 1 × \(10^6\) kg·m/s.

Learn more about the flow rate of momentum at

https://brainly.com/question/30338128

#SPJ4

The potential energy stored in the bow when the arrow is pulled back by a distance of 0.30 m by exerting an average force of 40.0 N can be calculated as follows: PE = (1/2) * k * x², where, PE = Potential Energy, k = spring constant, x = distance stretched.

Thus, we can say that the potential energy stored in the bow is 2.4 J (joules) the moment before the arrow is released. Potential energy is the energy stored in an object due to its position, shape, or arrangement.

The formula for potential energy is PE = mgh, where m is the mass of the object, g is the acceleration due to gravity, and h is the height of the object above some reference point.

In this case, since we are dealing with a bow and arrow, we use the formula PE = (1/2) * k * x², where k is the spring constant and x is the distance stretched by the bow.

This formula is applicable in scenarios where an elastic object is stretched or compressed and has the potential to release energy when it is allowed to return to its original shape or position.

Learn more about potential energy here ;

https://brainly.com/question/24284560

#SPJ11

Explanation:

Because When placed on hot water, the thermometer itself expands slightly first so the Mercury appears to be descending. After the thermometer expands slightly, the Mercury expands. Hence, Mercury column in thermometer first decends slightly and then rises when placed in hot water

Answer:

Any liquid in a container, when heated, at first it's level goes down a little, then rises.

It's because the container volume increases first, before the liquid gets hot. So the level goes down. It takes a little longer to heat up the whole volume of the liquid. A little later, as the liquid gets heated up, it expands faster than the container and the level rises.

In general, coefficient of thermal expansion is higher for liquids than solids.

This is why the mercury level first goes down then rises.

The work done by the force of gravity transfer to the ball is 60joules.

Kinetic energy is the force an object possesses as a result of motion. An object must be subjected to a force in order to accelerate.

The energy of motion, or kinetic energy, can be seen in the movement of an object or subatomic particle. Kinetic energy is present in every moving object and particle. Kinetic energy is present when something moves, such as a person walking, a baseball soaring through the air, a piece of food dropping from a table, or a charged particle in an electric field.

W = KEf - KEi

W = 80-20

W = 60joules.

To know more about kinetic energy visit:

https://brainly.com/question/26472013

#SPJ4

Answer:

t = 180 / 1.4 = 129 sec   (time to swim horizontally across river)

S = 129 sec * V     where V is speed of current and S is the distance he will be carried downstream

The problem does not specify V the speed of the river

Answer:

Explanation:

From the given information:

a) the distance(D) showing how dar downstream he will land can be computed as follows:

Assuming the current of the river = 0.2 m/s

\(D = \dfrac{180 \ m \times 0.2 \ m/s}{1.4 \ m/s}\)

D = 36 m ÷ 1.4

D = 25.71 m

The required time (t) to reach the other side is:

time (t) = 180 m/ 1.4 m/s

time (t) = 128.57 seconds

Answer:

2n^2

Explanation:

depends on n

if first orboit n = 1

and so on

Answer:

Approximately \(0.45\) (assuming that the surface is level, the mass is moving at constant velocity, and that \(g = 9.81\; {\rm m\cdot s^{-2}}\).)

Explanation:

With a power of \(P = 1.0\; {\rm kW} = 1.0\times 10^{3} \; {\rm W}\), the work that would be done over \(t = 10\; {\rm s}\) would be:

\(\begin{aligned}(\text{work}) &= (\text{power})\, (\text{time}) \\ &= (1.0\times 10^{3}\; {\rm W})\, (10\; {\rm s}) \\ &= 1.0 \times 10^{4}\; {\rm J}\end{aligned}\).

Divide work by distance to find the force that did the work:

\(\begin{aligned} (\text{force}) &= \frac{(\text{work})}{(\text{distance})} \\ &= \frac{1.0\times 10^{4}\; {\rm J}}{50\; {\rm m}} \\ &= 200\; {\rm N}\end{aligned}\).

If this mass is moving at a constant velocity, the magnitude of friction on this mass will be equal to that of the external force, \(200\; {\rm N}\).

If the surface is level, the magnitude of the normal force on this mass will be equal to that of weight:

\(\begin{aligned}(\text{weight}) &= (\text{mass})\, g \\ &= (45\; {\rm kg})\, (9.81\; {\rm N\cdot kg^{-2}}) \\ &\approx 4.41 \times 10^{3}\; {\rm N}\end{aligned}\).

Divide the magnitude of friction by normal force to find the coefficient of friction:

\(\begin{aligned}& (\text{coefficient of friction}) \\ =\; & \frac{(\text{friction})}{(\text{normal force})} \\ \approx\; & \frac{200\; {\rm N}}{(45\; {\rm kg})\, (9.81\; {\rm N\cdot kg^{-1}}))} \\ \approx \; & 0.45\end{aligned}\).

Answer:

the answer would be conductors