Calculate the fuel efficiency of a vehicle that can travel 350 km using 20 L of gasoline. Include units in your answer.

I got 17.5kmpl and the system said it was wrong. Please help!!

Answer:

2.8ibs=kg check with someone else im not for sure.

Explanation:

if you divide 10 divided by 2 it gives you 5 and then subtract it by 2.2 = 2.8

there goes your answer.

The magnitude of the electric field that the electron produces at the location of the nucleus is 5.13 x 10¹¹ N/C.

The magnitude of the electric field strength of the electron is the force experienced in the field per unit charge.

[tex]E = \frac{F}{Q} = \frac{kQ}{r^2}[/tex]

where;

The magnitude of the electric field strength is calculated as follows;

[tex]E = \frac{(9\times 10^9) \times (1.6 \times 10^{-19})}{(5.3 \times 10^{-11})^2} \\\\E = 5.13 \times 10^{11} \ N/C[/tex]

Thus, the magnitude of the electric field that the electron produces at the location of the nucleus is 5.13 x 10¹¹ N/C.

Complete question is below:

In the Bohr model of the hydrogen atom, the electron moves in a circular orbit of radius 5.3 x 10^-11 m with a speed of 2.2 x 10^6 m/s.

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Answer:

See down

Explanation:

Airborne Testing
In order to rate the airborne sound insulation of a party element, speakers are used to generate white noise, usually at levels of around 100 decibels, in the source room. Then, using a moving microphone technique, the average sound pressure level is measured the other side of the element in question.

Answer:

a house or a land is used to secure a mortgage loan

a house or a land is used to secure a mortgage loan. Hence option D is correct.

A loan is the lending of money by one or more persons, organisations, or other entities to other individuals, organisations, or other entities in finance. The recipient (i.e., the borrower) incurs a debt and is often required to pay interest on that loan until it is repaid, in addition to repaying the primary amount borrowed.

The paper demonstrating the loan (for example, a promissory note) will often indicate the principal amount borrowed, the interest rate charged by the lender, and the date of repayment. A loan is the temporary reallocation of the subject asset(s) between the lender and the borrower.

The interest serves as an inducement for the lender to make the loan.

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Answer:

move closer together, decreasing the volume

Explanation:

A 615 N student standing on a scale in an elevator notices that the scale reads 645 N. From this information, the student cannot tell that if the elevator is moving upward or downward. The correct answer is option C.

The reason for this is that the scale reading depends not only on the weight of the student but also on the acceleration of the elevator. If the elevator is accelerating upwards, the scale will read more than the actual weight of the student.

Similarly, if the elevator is accelerating downwards, the scale will read less than the actual weight of the student.

In this case, we know that the scale reads 645 N, which is 30 N more than the actual weight of the student (615 N).

However, we don't know whether the elevator is accelerating upwards or downwards. It could be accelerating upwards with an acceleration of 3 m/s^2 (in which case the apparent weight would be 645 N), or it could be accelerating downwards with an acceleration of 3 m/s^2 (in which case the apparent weight would be 585 N).

Therefore, based on the information given, we cannot determine whether the elevator is moving upwards or downwards. The correct option is c.

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The precision (relative error) of the centripetal force is 1%.

This is the error in measurement of a variable obtained in comparison with other variables.

F = mv²/r

where;

F/m = v²/r

F/m = (0.01v)²/(0.01r)

F/m = 0.01v²/r

F/m = 1%(v²/r)

Thus, the precision (relative error) of the centripetal force is 1%.

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Answer:

it spills or sometimes it doesn't

Explanation:

depends on the road and speed

Answer:

35 degrees Fahrenheit is 1.66667 degrees in Celcius. Written in Kelvin, 35 degrees Fahrenheit would be 274.817 K.

Celcius:

(35°F − 32) × 5/9 = 1.667°C

Kelvin:

(35.001°F − 32) × 5/9 + 273.15 = 274.817K

F to C formula:

(32°F − 32) × 5/9 = 0°C

F to K formula:

(°F − 32) × 5/9 + 273.15 = K

Answer:

The sun's interior is similar to the Earth's; it has a core, mantle, and crust

When a butane lighter is lit, chemical energy transforms into heat energy.

Energy cannot be created or destroyed, says the law of conservation of energy. However, it has the ability to change its form. The total energy of an isolated system is constant when all sources of energy are taken into account.

The chemical energy is the bonds of chemical molecules contain energy. Exothermic reactions are those in which chemical energy is released during the reaction, frequently in the form of heat.

In butane energy is stored as a chemical energy as  bonds of chemical molecules and when it is lit, the chemical energy of the butane transforms into heat energy.

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Explanation:

The box will undergo an acceleration. Due to Newton's 3rd Law, any action causes an equal and opposite reaction. The equal and opposite force from the box will not cancel the force that you are applying.

Answer:

The box will not move as it is in a a stable condition

Explanation:

when an equal and opposite force acts on a body the effects of forces cancels out. provided the body can withstand the tensile and compressive actions of the forces. when both forces are coming together it leads to compression while tension refers to forces moving away fro, each other.

Answer:

L = V × I × t

P = V × I then

P = L/t

P = 64000J/200s= 320W

answer : P = 320 W

........

The ball will operate under the laws of parabolic projectile motion and possess features sure as

The acceleration of the basketball at the highest point in its trajectory is a=0

Question Parameters:

the basket and player are of the same height.

He shoots the ball at angle 45 o

The height covered through the trajectory is 2.05 m 0 = 45°

The ball will create a parabolic shape to make a basket

Generally, the equation for the projectile motion is mathematically given as

y = (tan θ0)x – gx2/2(v0cosθ0)2

Therefore

This formula will calculate the motion of the ball.

With the y as its vertical representation and x as its horizontal representation

In conclusion, characteristics of the throw

a=0

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Answer:

I= 1/2 mr^2 solve for mass m.

radius given

angular momentum: I*w=I*2

KE= 1/2 I w^2= 1/2 I *2^2

Explanation:

The mass of the uniform disc at the given moment of inertia is determined as 16.67 kg.

The mass of the uniform disc is calculated from the moment of inertia of the disc.

I = ¹/₂mr²

2I = mr²

m = (2I)/r²

where;

m = (2 x 75)/(3²)

m = 16.67 kg

Thus, the mass of the uniform disc at the given moment of inertia is determined as 16.67 kg.

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Answer:

I pretty sure the answer is A " Behavior that does not involve the forebrain, or "higher" centers of an animal's brain."

Explanation:

I say this because it is bassicaly saying you body and brain does this without think which is a reflex. Such as geting your knee tapped with a rubber hamer it shoots up with out thinking about it.

Answer:

Pretty sure it's B. However, I am not positive.

Explanation:

Answer:

2 hour

Explanation:

car will cover 80km in 1 hr

odometer's reading increases 160 km

so 80km = 1hr

then, 160km =1/80×160

=2 hr

Answer:

120 mins

Explanation:

delta X = 860 - 700      V = 80km/hour

t= delta x/ v= (860-700)/80= 2hours

2 hours = 120 mins

Answer:

because the friction/movement of the bikes wheels, generates electricity and energy that the light can use to generate electricity and it also does not have a battery on it and relies on the wheels to generate the electricity for the light to work.

Explanation:

=> A.) 6

Explanation:

=> 6 molecules of water are recycled into one molecule of glucose during photosynthesis.

6CO2 + 6H2O + light energy → C6H12O6 + 6O.

PE = mgh

PE = 5.8 x 9.8 x 2.5

PE = 142.1 J

the answer is 140 J and my work is on the paper, hope it helps!

Answer:

Fastening-run & High-Jumping

The electric potential energy of the given charged particle is 8.55 x 10⁻⁷ J.

The electric potential energy of the given charged particle is calculated as follows;

E = Fd

where;

[tex]E = \frac{kq_1q_2}{r^2} \times r\\\\E = \frac{kq_1q_2}{r}[/tex]

Substitute the given parameter and solve for electric energy

[tex]E = \frac{(9\times 10^9) \times (5 \times 10^{-9}) \times (9.5 \times 10^{-9})}{0.5} \\\\\E = 8.55 \times 10^{-7} \ J\\\\[/tex]

Thus, the electric potential energy of the given charged particle is 8.55 x 10⁻⁷ J.

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Answer:

B

Explanation:

For every action,there is an equal but opposite reaction.

The heat current in the Erlenmeyer flask is 448.5 W.

Heat current or heat flow rate is the quantity of heat transferred in a given period of time.
[tex]Q = \frac{kA \Delta \theta }{L}[/tex]

where;

[tex]Q = \frac{0.598 \times 0.5 \times (30-0)}{0.02} \\\\Q = 448.5 \ W[/tex]

Thus, the heat current in the Erlenmeyer flask is 448.5 W.

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Testing site provides real environment to the scientists.

This type of site might help scientists to solve a problem during a mission because the site provides real environment and similar problems comes to the scientist which can be solved so that the real experiment can't experience such type of difficulties so we can conclude that testing site provides real environment to the scientists.

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Answer:

It's either B or D, I'm not positive which it is

Explanation:

Answer:

The answer is B.

Explanation:

The two resistors are in the same square space, while the others are not.

Answer:

1. The induced current will increase.

2. The ammeter will detect an increase in current, and the compass will detect a stronger magnetic field.

3. the ratio of incoming and outgoing voltages

4. Voltage and electric current are induced.

100%

The induced current will increase.

                                                           or

        [tex]${\displaystyle {\mathcal {E}}=-{\frac {\mathrm {d} \Phi _{B}}{\mathrm {d} t}}}[/tex]

        [tex]$\nabla \times \mathbf {E} =-{\frac {\partial \mathbf {B} }{\partial t}}[/tex]

        or

        [tex]${\displaystyle \oint _{\partial \Sigma }\mathbf {E} \cdot \mathrm {d} \mathbf {l} =-\int _{\Sigma }{\frac {\partial \mathbf {B} }{\partial t}}\cdot \mathrm {d} \mathbf {A} }[/tex]

Given is that a current is induced by moving a magnet in and out of a coil of wire.

As the magnet moves twice as fast, then the rate of change of magnetic flux will increase and hence the induced current will increase.

Therefore, we can conclude that the induced current will increase.

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Answer:

hold the plant in the ground

keep the plant upright

absorb water from the soil

take in nutrients from the soil

transport water and nutrients to the plant

provide a place for food storage

Explanation:

The plants are very complex organisms and can be classified into various types based on certain characteristics. The roots are very important structures which provide a lot of functions.

The roots are the important underground part of all the vascular plants. This part of the plant is generally responsible for anchoring it down into the ground and absorbing all the essential minerals, nutrients, and water from the soil.

The root of the plant also help us to store the food. The roots are not the reproductive part of the plants, they are called the vegetative parts. In certain plants, the roots are the means of reproduction. This type of reproduction is called the vegetative reproduction.

The roots also check the soil erosion, provide sustenance and also habitat for various organisms. The root absorb water and minerals from the soil and help in the process of photosynthesis.

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Answer:

I the moment of inertia is less if the other children sit in the center

Τ = I α   the angular acceleration will be greater for a given torque Τ