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vagabundo [1.1K]
3 years ago
11

How can I get the temperature? Sound Speed = 331 m/s + (0,6xTemperature)

Physics
1 answer:
Alla [95]3 years ago
7 0

need speed of sound on lhs

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Which of the following is NOT a way to identify a mineral
arsen [322]

Answer:

Color, however, is the least useful property for mineral identification. One reason is that many minerals have similar colors. Also, impurities can turn colorless minerals into colored minerals.

Explanation:

6 0
2 years ago
If 3,600 J of work is done in 3.0 s, what is the power?
Firlakuza [10]

Answer:

1,200 watts

Explanation:

1 watt = 1 Joule (J) of work / second

So, 3600 Joules of work / 3 seconds is:

3600 J / 3 seconds = 1,200 watts

8 0
3 years ago
A river flows due east at 12 km/h. A boat crosses the 720 m wide river by maintaining a constant velocity of 72 mi/h due north r
zhenek [66]

Answer:

The boat will be 74 .17 meters downstream by the time it reaches the shore.

Explanation:

Consider the vector diagrams for velocity and distance shown below.

converting 72 miles per hour to km/hr

we have 72 miles per hour 72 × 1.60934 = 115.83 km/hr

The velocity vectors form a right angled triangle, and can be solved using simple trigonometric laws

tan \theta = \frac{12}{115.873}

\theta = tan^{-1}(  \frac{12}{115.873})=5.9126

This is the vector angle with which the ship drifts away with respect to its northward direction.

<em>From the sketch of the displacement vectors,  we can use trigonometric ratios to determine the distance the boat moves downstream.</em>

Let x be the distance  the boat moves downstream.d

sin(5.9126)=\frac{x}{720}

x= 720\times 5.9126

x=74.17m

∴The boat will be 74 .17 meters downstream by the time it reaches the shore.

6 0
3 years ago
If the total momentum for a system is the same before and after the collision, we say that momentum is conserved. If momentum we
andrew-mc [135]

Answer:

Ratio = 1:1

Explanation:

P_{i} = initial momentum of the system

P_{f} = final momentum of the system

For the momentum to be conserved , final total momentum must be equal to initial total momentum, so we have

P_{f} = P_{i}

Dividing both side by P_{i} , we get

\frac{P_{f}}{P_{i}} = \frac{P_{i}}{P_{i}} \\\frac{P_{f}}{P_{i}} = 1\\

hence

Ratio = 1

5 0
3 years ago
Which of the following elements is the most chemically reactive?
ivolga24 [154]

Answer:

B) Fluorine

Explanation:

The most reactive element is fluorine, the first element in the halogen group. The most reactive metal is francium, the last alkali metal (and most expensive element).

6 0
2 years ago
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