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OlgaM077 [116]
4 years ago
12

A catapult is tested by Roman legionnaires. They tabulate the results in a papyrus and 2000 years later the archaeological team

reads (distances translated into modern units): Range = 0.3 km; angle of launch = π/6 rad; landing height = launch height. What is the initial velocity of launch of the boulders if air resistance is negligible?
Physics
1 answer:
Fantom [35]4 years ago
7 0

Answer:

   v₀ = 50.46 m / s

Explanation:

This is a projectile launch exercise where the scope is given by

         R = v₀² sin 2 θ / g

Let's clear the initial speed

        v₀ = √(G R / sin 2θ )

Let's reduce the distance

         R = 0.3 km (1000m / 1km)

         R = 300 m

Let's calculate

          v₀ = √ (9.8 300 / sin2 π / 6)

Let's calculate the breast in radians

        sin π / 3 = 0.8660

       v₀ = √ (2546.11)

       v₀ = 50.46 m / s

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tangare [24]

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6 0
3 years ago
Suppose you are in an elevator. As the elevator starts upward, its speed will increase. During this time when the elevator is mo
kkurt [141]

Answer:increased

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It is given that elevator speed is increasing while moving upward i.e.its acceleration is increasing .

This causes the apparent to be increased if measured using weighing machine.

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6 0
4 years ago
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soldier1979 [14.2K]

For the sound wave passing through regions of the ocean with varying density, longer wavelengths correspond to greater density of the water.

<h3>What is effect of density of a medium on wavelength of a wave?</h3>

The density of a medium is directly proportional to the wavelength of a wave.

The higher the density of the medium, the longer the wavelength of a wave.

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4 0
2 years ago
You throw a small rock straight up from the edge of a highway bridge that crosses a river. the rock passes you on its way down,
maw [93]
V^2=u^2 +2aS
U is found first by considering that first 8 secs and using v=u+at. {different v and u though}

V=-u+gt.
Magnitude of u = magnitude of v if there is no resistance ( because the conservation of energy says the k. E. must be the same when it passes you as when it left your hand).... up is negative here, down is positive.
V+v=gt
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4 0
3 years ago
A 0.18-kg turntable of radius 0.32 m spins about a vertical axis through its center. A constant rotational acceleration causes t
borishaifa [10]

Answer:

Angular acceleration will be 18.84rad/sec^2

Explanation:

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So angular acceleration will be 18.84rad/sec^2

4 0
4 years ago
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