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VladimirAG [237]

3 years ago

13

If a layer of sandstone is in contact with a mass of grainite that contains small pieces of the sandstone, which rock is older?

(1 point)
A) the sandstone
B) the granite
C) both are the same age
D) it is not possible to determine which rock is older from this information

1 answer:

OLEGan [10]3 years ago

6 0

I'm pretty sure it is B) The Granite.

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Roots grow into cracks and rocks and break them apart. This is an example of what type of weathering?

sukhopar [10]

Answer:

Wedging (for the first one)

Explanation:

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3 years ago

Why are the moon’s craters preserved?

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Hope this helps!!

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3 years ago

Which would be losing its seeds pterphyta angiosperms gymnosperms

Naddika [18.5K]

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3 years ago

A planet has a mass of 5.97 x 1024 kg and a radius of 6.38 x 106 m. Find the weight of a 65.0 kg person at 1000 km above the sur

mote1985 [20]

<u>Answer:</u> The weight of the person above the surface of a planet is 635.83N.

<u>Explanation:</u>

To calculate the weight of a person, we use the formula:

$w=mg$ ....(1)

where,

w = weight of an object

m = mass of the person = 65kg

g = acceleration due to the gravity of the planet

For the calculation of weight, we need to first find the acceleration due to gravity and for that we use the formula:

$g=\frac{GM}{r^2}$

where, g = acceleration due to gravity = $?m/s^2$

G = Universal gravitational constant = $6.67\times 10^{-11}Nm^2/kg^2$

M = mass of the planet = $5.97\times 10^{24}kg$

r = distance of the person from the planet = $6.38\times 10^6m$

Putting values in above equation, we get:

$g=\frac{(6.67\times 10^{-11}kgm/s^2.m^2/kg^2)(5.97\times 10^{24}kg)}{(6.38\times 10^6m)^2}\\\\g=9.782m/s^2$

Putting this value in equation 1, we get:

$w=65kg\times 9.782m/s^2=635.83N$

Hence, the weight of the person above the surface of a planet is 635.83N.

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Pavlova-9 [17]

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2 years ago

Read 2 more answers