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Lady bird [3.3K]
3 years ago
7

A bowling ball traveling with constant speed hits the pins at the end of a bowling lane 16.5 m long. The bowler hears the sound

of the ball hitting the pins 2.50 s after the ball is released from his hands. What is the speed of the ball? The speed of sound is 340 m/s.
Physics
1 answer:
slamgirl [31]3 years ago
4 0

total time = ball travel time + sound travel time  

2.40 = Tball + 18.0 m / (340 m/s)  

Tball = 2.35 s  

V = d/t = 18.0 / 2.35 = 7.67 m/s

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Answer:

C

Explanation:

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3 years ago
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If a lawn mower is pushed with a distance of 30 meters and 12N-m of work is exerted, calculate the force.
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Answer:

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W = FΔx so filling in:

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kobusy [5.1K]

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The power of the engine at the given efficiency is calculated as follows;

E = \frac{P_{out}}{P _{in}} \times 100\%\\\\&#10;60\% = \frac{P_{out}}{6,666} \times 100\%\\\\&#10;0.6 = \frac{P_{out}}{6,666} \\\\&#10;P_{out} = 3,999.6 \ W

Learn more about efficiency here: brainly.com/question/15418098

8 0
2 years ago
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An incompressible fluid (water) is flowing through a pipe of diameter 20 cm with
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Answer:

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P₁ + ½ ρ v₁² + ρgh₁ = P₂ + ½ ρ v₂² + ρgh₂

Assuming no elevation change, h₁ = h₂.

P₁ + ½ ρ v₁² = P₂ + ½ ρ v₂²

Plugging in values:

(582,000 Pa) + ½ (1000 kg/m³) (1.28 m/s)² = P + ½ (1000 kg/m³) (30.6 m/s)²

P = 115,000 Pa

P = 115 kPa

3 0
3 years ago
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