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miv72 [106K]
2 years ago
9

What is Archimedes principle?​

Physics
1 answer:
trasher [3.6K]2 years ago
6 0

Archimedes' principle states that a body immersed in a fluid is subjected to an upwards force equal to the weight of the displaced fluid. This is a first condition of equilibrium. We consider that the above force, called force of buoyancy, is located in the centre of the submerged hull that we call centre of buoyancy.

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Projectile's horizontal range on level ground is R=v20sin2θ/g. At what launch angle or angles will the projectile land at half o
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Answer:

\theta = 15^o \: or\: 75^o

Explanation:

As we know that the formula of range is given as

R = \frac{v^2sin2\theta}{g}

now we know that

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R_{max} = \frac{v^2}{g}

now we need to find such angles for which the range is half the maximum value

so we will have

\frac{R}{2} = \frac{v^2}{2g} = \frac{v^2sin(2\theta)}{g}

sin(2\theta) = \frac{1}{2}

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A swimming duck paddles the water with its feet once every 1.6 s, producing surface waves with this period. The duck is moving a
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a)

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b)

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D = v_{w} T

D = (0.565) (1.6)

D = 0.904 m

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3 years ago
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