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vovikov84 [41]
4 years ago
13

Which of the following processes physically breaks rocks and minerals into smaller and smaller pieces?

Physics
2 answers:
Stels [109]4 years ago
5 0
C. chemical weathering
Minchanka [31]4 years ago
4 0
It would be C chemical weathering
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Why are some machines less than 100% efficient?
evablogger [386]

Answer:

The output work is always less than the input work because some of the input work is used to overcome friction. Therefore, efficiency is always less than 100 percent. The closer to 100 percent a machine's efficiency is, the better it is at reducing friction

Explanation:

7 0
3 years ago
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A straight wire is aligned east-west in a region where Earth’s magnetic field has magnitude 0.0780 mT and direction 67.1° below
Sergio [31]

Explanation:

It is given that,

Earth's magnetic field, B=0.078\ mT=0.078\times 10^{-3}\ T

Direction of magnetic field, 67.1 degrees below the horizontal, with the horizontal component directed due north.

The magnetic force on the wire per unit length of wire, \dfrac{F}{L}=0.0300\ N/m

(a) The given scenario is shown in the attached figure as :

Using the right hand rule to find the direction of magnetic force on the wire. By using this rule, we get the magnetic force acting on the wire is in upward direction.

(b) Let I is the current flowing in the wire. The magnetic force is given by the following formula as:

F=ILB

I=\dfrac{F}{LB}

I=\dfrac{0.0300}{0.078\times 10^{-3}}

I = 384.61 A

Hence, this is the required solution.

7 0
3 years ago
Pendulum earth air lololo
zhannawk [14.2K]
Is this a question?
4 0
3 years ago
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How do you calculate the volume and density of something that weighs 20 grams?
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Mass divided by volume is density, while mass times density is volume. you cannot calculate density without volume and you cannot calculate volume without density.
i believe that's the answer.
oh gosh i didn't realize my middle school education involved high school stuff.
6 0
4 years ago
The distance between Earth and Mars is 225 million km. When converted using the conversion factor 1 AU = 1.5 × 108 km, the dista
SIZIF [17.4K]
I guess the problem is asking for the distance between Earth and Mars in Astronomical Units (AU).

Since 1 AU = 1.5 \cdot 10^8 km
and the distance between the two planets is
d=225 mil. km= 2.25 \cdot 10^8 km
we can convert this distance into AU by using the following proportion:
1 AU : 1.5 \cdot 10^8 km = x : 2.25 \cdot 10^8 km

from which we find
x= \frac{1 AU \cdot 2.25 \cdot 10^8 km}{1.5 \cdot 10^8 km} =1.5 AU
7 0
3 years ago
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