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Arada [10]
3 years ago
8

When a car is weighed, it is driven slowly on a horizontal floor over a scale that records a reading as the front wheels go over

the scale, and then records a second reading as the rear wheels go over the scale. The weight of the car is equal to
A) the weight under the rear wheels.

B) the average of the two weights.

C) the sum of the two weights.

D) the weight under the front wheels.

E) the difference of the two weights.
Physics
1 answer:
Ymorist [56]3 years ago
7 0

Answer: C

Explanation:

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Molecular orbital theory correctly predicts paramagnetism of oxygen gas. true or false
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Answer: Yes.

Explanation:

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An airplane starts at rest and accelerates at 6.8 m/s2 at an angle of 39° south of west. After 9 s, how far in the westerly dire
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3 years ago
A rectangular sharp-crested weir is contracted on both sides, and the opening is 1.2 m wide. At what height (Hw) should it be pl
Alex

Answer:

H_w = 2.129 m

Explanation:

given,

Width of the weir, B = 1.2 m

Depth of the upstream weir, y = 2.5 m

Discharge, Q = 0.5 m³/s

Weir coefficient, C_w = 1.84 m

Now, calculating the water head over the weir

Q = C_w BH^{3/2}

H = (\dfrac{Q}{C_wB})^{2/3}

H = (\dfrac{0.5}{1.84\times 1.2})^{2/3}

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