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Lynna [10]
2 years ago
13

Which of these are minerals? Select all that apply A) mica B) quartz C) steam D) copper

Physics
2 answers:
posledela2 years ago
6 0
<span>A) mica B) quartz C) steam D) copper is allminerals</span>
Molodets [167]2 years ago
5 0
Your answer would be:
Copper
Quartz

I hope that this helps. :)
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PLEASEE HELPP
topjm [15]

Explanation:

u=166m/s, v=0(at it's highest point final velocity is zero), a=9.8m/s², t=8.6s

by the formula, S=ut+½at².

S=[166×8.6+½.×9.8×(8.6)²]. ...by calculation

S = 1427.6+362.404

S=1790.004m

hope this helps you.

4 0
2 years ago
A boy is using a rope to pull a sled to the left on a horizontal surface. The rope is parallel to the surface. What are the dire
trasher [3.6K]

Answer:

Explanation:

Check attachment

3 0
3 years ago
How did life evolve from nonliving matter?
Paha777 [63]

Answer: it  is proposes that in Earth's prebiotic history, simple organic matter was exposed to energy in the form of volcanoes and electrical storms

Explanation:

8 0
2 years ago
A Ferris wheel has diameter of 10 m. It rotates at a uniform rate and makes one revolution in 8.0 seconds. A person weighing 670
Nikolay [14]

Answer:  459.14 N

Explanation:

from the question, we have

diameter = 10 m

radius (r)  = 5 m

weight (Fw) = 670 N

time (t) = 8 seconds

Circular motion has centripetal force and acceleration pointing perpendicular and inwards of the path, therefore we apply the equation below

∑ F = F c =  F w − Fn ..............equation 1

Fn = Fw − Fc = mg − (mv^2 / r) ...................equation 2

substituting the value of v as (2πr / T) we now have

Fn = mg − (m(2πr / T )^2) / r

Fn= mg − (4(π^2)mr / T^2)   ..........equation 3

Fw (mass of the person) = mg

therefore m = Fw / g

                m = 670 / 9.8 = 68.367 kg

now substituting  our values into equation 3

Fn = 670 - ( (4 x (π^2) x 68.367 x 5 ) / 8^2)

Fn = 670 - 210.86

Fn = 459.14 N

4 0
3 years ago
Define 1 calorie heat​
masha68 [24]

Answer:

"One calorie of heat is defined as the amount of heat needed to raise the temperature of one gram of water by one degree Celsius"

Hope this Helps!

8 0
2 years ago
Read 2 more answers
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