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3 years ago

How are weather from ice and plants different from weathering from wind and water?

1 answer:

7 0

“Weathering is the breaking down of rocks, soil and minerals as well as wood and artificial materials through contact with the Earth’s atmosphere, biota and waters. Weathering occurs in situ, roughly translated to: “with no movement”, and thus should not be confused with erosion, which involves the movement of rocks and minerals by agents such as water, ice, snow, wind, waves and gravity and then being transported and deposited in other locations.”

Weathering processes are of three main types: mechanical, organic and chemical weathering.

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What units would be used to describe the surface gravity of Mars?

Tom [10]

AU- astronautical units

8 0

3 years ago

A ball droped from a building. How fast is it traveling after falling 3.55s

algol [13]

Answer:

d = 61.75 m

Explanation:

Given that,

A ball droped from a building.

We need to find how fast is it traveling after falling 3.55 s.

As it is dropped, its initial velocity is equal to 0.

Let d is the distance it covers after falling 3.55 s.

We can use second equation of motion to find d.

$d=ut+\dfrac{1}{2}at^2$

Here, u = 0 and a =g

$d=\dfrac{1}{2}gt^2\\\\d=\dfrac{1}{2}\times 9.8\times (3.55)^2\\\\d=61.75\ m$

So, it will cover 61.75 m after falling 3.55 seconds.

4 0

3 years ago

Two trains travel at right angles to each other after leaving the same train station at the same time. Two hours later they are

Vikentia [17]

Answer:

Speed of faster train equals 29 mph

Explanation:

Let the speed of slower train be 'x' miles per hour and the speed of faster train be 'y' miles per hour.

Distance that slower train covers in 2 hours= $2\times x miles$

Distance that faster train covers in 2 hours= $2\times y miles$

Since they move at right angles the distance between them can be found by Pythagoras formula as

$d^{2}=(2x)^{2}+(2y)^{2}\\\\d^{2}=4(x^{2}+y^{2})\\(70.46)^{2}=4(x^{2}+y^{2})\\\\\therefore (x^{2}+y^{2})=\frac{(70.46)^{2}}{4}\\\\(x^{2}+y^{2})=\frac{4964.6}{4}\\\\(x^{2}+y^{2})=1241.15$

It is given that $y=x+9$

Using this in the above equation we get

$(x^{2}+y^{2})=1241.15\\\\x^{2}+(x+8)^{2}=1241.15\\2x^{2}+16x+64=1241.15\\2x^{2}+16x-1177.15=0$

This is a quadratic equation in 'x'

Comparing with standard quadratic equation $ax^{2}+bx+c$ we get value of x as

$(x^{2}+y^{2})=1241.15\\\\x^{2}+(x+8)^{2}=1241.15\\2x^{2}+16x+64=1241.15\\2x^{2}+16x-1177.15=0\\\\x=\frac{-16\pm \sqrt{(16)^{2}-4\times 2\times -1177.15}}{2\times 2}\\\\x=\frac{-16\pm 98.35}{4}\\\\x=20.58mph(\because speed\neq$

Thus speed of faster train = 28.58 mph

Speed of faster train = 19 mph

3 0

4 years ago

Read 2 more answers

A machine has an efficiency of 20%. Find the input work if the output work is 140J.

Ilia_Sergeevich [38]

Ummmm I don’t know this sorry

3 0

3 years ago

Two resistors with values of 6.0 W and 12 W are connected in parallel. This combination is connected in series with a 4.0 W resi

Zigmanuir [339]

The answer is C. 8.0

Factor in the resistors and take into account the 4.0 W connection. Then do it like you normally would with the 4.0 W included. This will give you 8.0, simple :)

Hope this helped. Have a great day!

8 0

3 years ago

Read 2 more answers