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3 years ago

15

If you see a dark mass similar to a blown-up balloon at the top of a volcano, what type of feature are you most likely viewing?

1 answer:

SashulF [63]3 years ago

4 0

Answer:

Lava dome

Explanation:

A geyser is hot water being shot up from the ground

A newly formed island would be somewhere on the ground not directly above a volcano (Well depending on where the volcano is anyways)

A flood basalt plateau is like rocks I think?

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People who pay attention to detail:

leonid [27]

The answer to this is option A

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3 years ago

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mario62 [17]

2a) the first sound he hears was travelling through the metal pipe (sound travels faster in solids) while the second sound he hears traveled through the air.

2b) The pipe is 330m/s * 1s = 330m.

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3 years ago

A 56 kg boat that is 7.6 m in length is initially 7.6 m from the pier. A 39 kg child stands at the end of the boat closest to th

svlad2 [7]

Answer:

Explanation:

Given

mass of boat $M=56\ kg$

mass of Person $m=39\ kg$

Length of boat $L=7.6\ m$

Center of mass of boat and child

$x_{cm}=\frac{M\times 0.5L+m\times L}{M+m}$

$x_{cm}=\frac{56\times 0.5\times 7.6+39\times 7.6}{56+39}$

$x_{cm}=\frac{509.2}{95}$

$x_{cm}=5.36---1$

when child reaches another end of boat, boat is shifted by x cm

Center of mass of the system will remain the same

$x'_{cm}=\frac{M\times (x+0.5L)+m\times x}{M+m}$

$x'_{cm}=\frac{56\times (x+0.5\times 7.6)+39\times x}{56+39}----2$

Equating 1 and 2 we get

$509.2=95x+212.8$

$x=3.12\ m$

6 0

3 years ago

castortr0y [4]

Answer: $Q=3000 cal$

Explanation:

We are given the following formula:

$Q=m. c. \Delta T$ (1)

Where:

$Q=3000 cal$ is the amount of heat

$m=300g$ is the mass of water

$c=1 cal/g \°C$ is the specific heat of water

$\Delta T$ is the variation in temperature, which in this case is $\Delta T=30\°C-20\°C=10\°C$

Rewriting equation (1) with the known values at the right side, we will prove the result is $3000 cal$ :

$Q=(300g)(1 cal/g \°C)(10\°C)$ (2)

$Q=3000 cal$ This is the result

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A train is traveling at 28 m/s. It slows to 6 m/s in 4 s. Calculate the distance the train

adell [148]

The next step is -748 divide by -11 is 68 m (answer) the pic got cropped sorry

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