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Nana76 [90]
3 years ago
7

PLEASE EXPLAIN AND YOU WILL GET BRAINLIST Ms. R is curious if the type of gasoline she uses in her car affects how many miles sh

e can drive on a single tank of gas. (Fuel efficiency). Which of the following would be the BEST scientific question for her to test?
1) How does driving farther affect the type of gas used?

2) How does a Mazda compare to a Civic?


3) How does changing the type of fuel affect the number of miles a car can be driven on a single tank of gas?


4)How does the color of the car affect its internal temperature?
Physics
1 answer:
inessss [21]3 years ago
8 0
Option 3 is the most reasonable

I hope this helped <3

Please give brainliest :)
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Suppose I produce radio waves with an antenna that have a peak electric field amplitude E and peak magnetic field amplitude B. I
denis23 [38]

Answer:

Correct answer is 2B

Explanation:

The electric field magnitude and magnetic field magnitude in an electromagnetic waves are related as under

E=cB

where 'c' is velocity of light in the medium of transmission

According to the given question if we double the electric field we have

2E=cB'\\\\2cB=cB'\\\\B'=2B

Thus the magnetic field also doubles

3 0
3 years ago
A uniform ladder of length L and weight w is leaning against a vertical wall. The coefficient of static friction between the lad
pantera1 [17]

Answer: 45.3°

Explanation:

Given,

Length of ladder = l

Weight of ladder = w

Coefficient of friction = μs = 0.495

Smallest angle the ladder makes = θ

If we assume the forces in the vertical direction to be N1, and the forces in the horizontal direction to be N2, then,

N1 = mg and

N2 = μmg

Moment at a point A in the clockwise direction is

N2 Lsinθ - mg.(L/2).cosθ = 0

μmgLsinθ - mg.(L/2).cosθ = 0

μmgLsinθ = mg.(L/2).cosθ

μsinθ = cosθ/2

sin θ / cos θ = 1 / 2μ

Tan θ = 1 / 2μ

Substituting the value of μ = 0.495, we have

Tan θ = 1 / 2 * 0.495

Tan θ = 1 / 0.99

Tan θ = 1.01

θ = tan^-1(1.01)

θ = 45.3°

3 0
3 years ago
if a girl is standing in front of a smooth surface from which a sound is reflected, the girl may hear
Dimas [21]
The girl may hear from the front
3 0
3 years ago
At which position would a person on Earth be able to view a solar eclipse?<br> A<br> B<br> C<br> D
sweet-ann [11.9K]
The answer would be A, since at that position the Earth is fully/partially being engulfed in a shadow cast by the moon from the sun’s rays.

Hope this helps!
5 0
3 years ago
How to answer this question?
laila [671]

Answer:

measure the vector diagram first

5 0
3 years ago
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