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tensa zangetsu [6.8K]
2 years ago
11

Calculate the mass of an ice block of volume 12m³. the density of the ice is 920kg/m³.​

Physics
1 answer:
beks73 [17]2 years ago
4 0

Mass = density • volume

so (12)(920)(kg/m^3•m^3)

11040 kg

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In a jump spike, a volleyball player slams the ball from overhead and toward the opposite floor. Controlling the angle of the sp
MAVERICK [17]

Answer:

The ball would have landed 3.31m farther if the downward angle were 6.0° instead.

Explanation:

In order to solve this problem we must first start by doing a drawing that will represent the situation. (See picture attached).

We can see in the picture that the least the angle the farther the ball will go. So we need to find the A and B position to determine how farther the second shot would go. Let's start with point A.

So, first we need to determine the components of the velocity of the ball, like this:

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V_{Ax}=20.38 m/s

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we pick the positive one, so it takes 0.317s for the ball to hit on point A.

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x_{A}=V_{Ax}t

x_{A}=(20.38m/s)(0.317s)

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V_{Bx}=20.88 m/s

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0=2.1m+(-2.195m/s)t-\frac{1}{2}(-9.8m/s^{2})t^{2}

-4.9t^{2}-2.195t+2.1=0

t=\frac{-b\pm\sqrt{b^{2}-4ac}}{2a}

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we pick the positive one, so it takes 0.468s for the ball to hit on point B.

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x_{B}=V_{Bx}t

x_{B}=(20.88m/s)(0.468s)

x_{B}=9.77m

So once we got the two distances we can now find the difference between them:

x_{B}-x_{A}=9.77m-6.46m=3.31m

so the ball would have landed 3.31m farther if the downward angle were 6.0° instead.

7 0
2 years ago
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Answer:

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But M = L × ρ = (2 × 0.005) = 0.01 kg/m

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