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Natasha2012 [34]
3 years ago
14

A boy standing at one end of a floating raft that is stationary relative to the shore walks to the opposite end of the raft, awa

y from the shore. As a consequence, the raft does which of the following?
a. remains stationary
b. moves away from the shore
c. moves toward the shore.
Physics
1 answer:
lapo4ka [179]3 years ago
6 0

Answer:

The raft moves towards the shore

Explanation:

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In a recent survey, state voters said they were not pleased with the conditions of roads. They would like to see current roads i
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The time T in seconds for a pendulum of length L feet to make one swing is given by Upper T=2\pi \sqrt((L)/(36)). How long is a
Andreyy89

Answer:

3.6ft

Explanation:

Using= 2*π*sqrt(L/32)

To solve for L, first move 2*n over:

T/(2*π) = sqrt(L/32)

Next,eliminate the square root by squaring both sides

(T/(2*π))2 = L/32

or

T2/(4π2) = L/32

Lastly, multiply both sides by 32 to yield:

32T2/(4π2) = L

and simplify:

8T²/π²= L

Hence, L(T) = 8T²/π²

But T = 2.1

Pi= 3.14

8(2.1)²/3.14²

35.28/9.85

= 3.6feet

5 0
3 years ago
Bird bones have air pockets in them to reduce their weight–this also gives them an average density significantly less than that
lakkis [162]

Answer:

a)39ml

b)39g

c)1.1g/ml

Explanation:

Hello!

To solve this exercise use the following steps

1. When Archimedes discovered how to determine the irregular volume of an object by weighing it in the air and in an algua, he found that its volume is equal to the ratio between the differences of the masses (heavy in the air and in the water) and the density of the water (= 1g / ml)

V=\frac{43g-3.6g}{1g/ml} =39.4ml

2.as the principle of archimedes says, the displaced volume of water is equal to the volume of the bone which means that 39.4ml of water was displaced, taking into account that the density of water is the ratio between mass and volume we can determine the displaced body of water

density=\frac{m}{V} \\m=V(density)\\m=(39ml)(1g/ml)=39g

3. we use the density equation to find the bone density

density=\frac{43g}{39ml} =1.1g/ml

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i dont know if that’s what you’re looking for but here ya go.
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