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maksim [4K]
1 year ago
13

If the splash is heard 1.07 seconds later, what was the initial speed of the rock? take the speed of sound in the air to be 343

m/s.
Physics
1 answer:
mihalych1998 [28]1 year ago
5 0

The initial speed of the rock was 9.00m deep.

<h3>What is initial speed?</h3>

Speed is a scalar quantity that measures the velocity's magnitude (meaning it only takes one number to describe it, unlike a vector which takes at least two, one for the magnitude and one for the direction). Initial speed is a common misnomer for initial velocity, although velocity is more accurate because it denotes the magnitude of a vector, which has direction. On the other hand, as speed is a scalar value, it does not convey direction. Initial speed is a common misnomer for initial velocity, although velocity is more accurate because it denotes the magnitude of a vector, which has direction. On the other hand, as speed is a scalar value, it does not convey direction.

Learn more about initial speed, visit

brainly.com/question/3809667

#SPJ4

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<span>B. If the temperature of a solid is increased, the solid expands and its volume increases.</span>
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A man attaches a divider to an outdoor faucet so that water flows through a single pipe of radius 9.25 mm into four pipes, each
irinina [24]

Answer:

1.24 m/s

Explanation:

Metric unit conversion:

9.25 mm = 0.00925 m

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The volume rate that flow through the single pipe is

\dot{V} = vA = 1.45 * \pi * 0.00925^2 = 0.00039 m^3/s

This volume rate should be constant and divided into the 4 narrower pipes, each of them would have a volume rate of

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So the flow speed of each of the narrower pipe is:

v_n = \frac{\dot{V_n}}{A_n} = \frac{\dot{V_n}}{\pi r_n^2}

v_n = \frac{9.74\times10^{-5}}{\pi 0.005^2} = 1.24 m/s

8 0
3 years ago
Which of these best defines weather? (3 points) a Atmospheric conditions over 30-year period Ob Day-to-day condition of the atmo
prisoha [69]

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b Day-to-day condition of the atmosphere

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2 years ago
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a object with a mass of 70 kilograms is supported at a height 8 meters above the ground.what's the potential energy of the objec
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Potential Energy = mgh,

where m = mass in kg,  g ≈ 10 m/s², h = height above ground = 8 m

PE = mgh
  
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7 0
3 years ago
A circular loop of wire with a diameter of 0.626 m is rotated in a uniform electric field to a position where the electric flux
Mila [183]

Answer:

C) 2.44 × 106 N/C

Explanation:

The electric flux through a circular loop of wire is given by

\Phi = EA cos \theta

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E is the electric field

A is the cross-sectional area

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The flux is maximum when \theta=0^{\circ}, so we are in this situation and therefore cos \theta =1, so we can write

\Phi = EA

Here we have:

\Phi = 7.50\cdot 10^5 N/m^2 C is the flux

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