3 years ago

A hilly road is spiral in shape.

Physics

1 answer:

Llana [10]3 years ago

6 0

I- wym incorrect answer i-

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What does a spring balance measure

Ber [7]

The spring balance provides a mass measurement

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3 years ago

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An elevated water tank holds 1 million gallons of water. Determine the force (in lbf) that the tower structure must be able to w

bixtya [17]

Answer:

8,345,925 lb-f

Explanation:

We know pressure P = F/A = ρgh ⇒ F = ρghA = ρgV

F = ρgV where F = force, ρ = density of water = 1000 kg/m³ , g = acceleration due to gravity = 9.8 m/s² and V = 1 × 10⁶ gallons = 1 × 10⁶ gallons × 1m³/264.2 gallons = 3785 m³

So, F = ρgV = 1000 kg/m³ × 9.8 m/s² × 3785 m³ = 37,093,000 N

We now convert Newtons to pound-force.

1 N = 0.225 lb-f

So, F = 37,093,000 N = 37,093,000 N × 0.225 lb-f/1 N = 8,345,925 lb-f

So, the tower must be able to withstand 8,345,925 lb-f

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3 years ago

A 30 kg child is in an elevator accelerating down at a rate of -5 m/s2.

Annette [7]

Answer:

The force is - 150 N

Explanation:

F = 30 • - 5 = - 150

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3 years ago

Arcsin 0.9331 in degrees

lisabon 2012 [21]

Answer:

68.9233231661

Explanation:

Just put it into your calculator, shift sin should do it but it will come up like this: $sin^{-1}$ which is the same as arcsin

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3 years ago

How fast must a 2500-kg elephant move to have the same kinetic energy as a 67.0-kg sprinter running at 15.0 m/s

abruzzese [7]

Answer:

2.45 m/s

Explanation:

kinetic energy = 1/2 * m * v^2

then, 0.5 * 2500 * x^2 = 0.5 * 67 * 15^2

by solving for x, X = 2.45 m/s

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3 years ago

A hilly road is spiral in shape.​

A hilly road is spiral in shape.