Does a more efficient car have a larger or smaller LPK number? Explain how you know..

Physics

2 answers:

Sindrei [870]3 years ago

7 0

Answer: smaller

LPK (Litre per kilometer) refers to amount of fuel in litres required per unit km by a car. In Europe, LPK number is used to specify the efficiency of a car. An efficient car would be the one which would consume less amount of fuel per kilometer run. Hence, a more efficient car would have smaller LPK number.

Softa [21]3 years ago

5 0

A more efficient car will have smaller LPK number.

Explanation

LPK number is the measure of liters of fuel consumed by the vehicle to travel one kilometer distance.

The LPK number that is liters per kilometer number is used in Europe to determine the efficiency of cars.

A car will be termed as efficient if it uses less amount of fuel for travelling a larger distance.

This indicates that car which has more mileage or in other word which consumes less quantity of fuel to travel longer distance is termed as efficient cars.

Thus , a more efficient car will have smaller LPK number.

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Estimate the electric field at a point 2.40 cm perpendicular to the midpoint of a uniformly charged 2.00-m-long thin wire carryi

nadya68 [22]

Answer:

$E = 1.85*10^{12}\frac{N}{C}$

Explanation:

Hi!

The perpendicular distance 2.4cm, is much less than the distance to both endpoints of the wire, which is aprox 1m. Then the edge effect is negligible at this field point, and we can aproximate the wire as infinitely long.

The electric filed of an infinitely long wire is easy to calculate. Let's call z the axis along the wire. Because of its simmetry (translational and rotational), the electric field E must point in the radial direction, and it cannot depende on coordinate z. To calculate the field Gauss law is used, as seen in the image, with a cylindrical gaussian surface. The result is:

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