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kicyunya [14]
3 years ago
11

How long does it take a car traveling at 45km/h to travel 100 m

Physics
1 answer:
AysviL [449]3 years ago
6 0

Explanation:

45 \frac{km}{hr}  \times  \frac{1000m}{1km}  = 45000 \frac{m}{hr}  \\  \frac{100m}{45000 \frac{m}{hr} }  =  \frac{1}{450} hr \\  \frac{1}{450} hr \times  \frac{60mins}{1hr}  =  \frac{2}{15} mins = 0.133mins

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Un avión da "una vuelta mortal" de radio R = 500 m con una celeridad constante v = 360 km/h. Halla la fuerza ejercida por el asi
Airida [17]

Answer:

1400 N

Explanation:

Verá, durante el salto mortal, el piloto se mueve en una trayectoria circular y la fuerza que actúa sobre él es una fuerza centrípeta.

Sea la fuerza centrípeta F, la masa del piloto (m) = 70 Kg, el radio (r) = 500 my la velocidad (v) = 360 km / hr * 1000/3600 = 100 m / s

F = mv ^ 2 / r

F = 70 * (100) ^ 2/500

F = 1400 N

8 0
3 years ago
A car is moving at a constant speed of 100 miles per hour. how long does it take for the car to travel 200 miles.
Pepsi [2]

Answer:

d. 2 hours

Explanation:

because if it travels 100 miles per hour in 1 hour it would travel 200 miles in 2 hours and so fourth.

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3 years ago
A balance uses small metal weights of known mass to determine the mass of a substance. Where would a balance NOT function correc
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Answer:

D is the answer.

Explanation:

Just do it.

6 0
3 years ago
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4. O/N 15/P11/Q11
anygoal [31]

Answer:

B) 4500 Pa

Explanation:

As pressure is force per unit area,

P = F/A

It stands to reason that the smallest pressure for a given force is when it is shared by the largest area.

The possible areas are

0.30(0.40) = 0.12 m²

0.30(0.50) = 0.15 m²

0.40(0.50) = 0.20 m²

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P = 900 / 0.20 = 4500 N/m² or 4500 Pa

the other possible pressures would be

900/0.15 = 6000 Pa

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3 years ago
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