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9966 [12]
3 years ago
12

List at least five examples of minerals and their common uses.

Physics
1 answer:
juin [17]3 years ago
6 0

Answer:

Gold

mica

halite

gypsum

copper

Explanation:

Gold:it is used in dentistry

mica: its is used in putting sparkle in rock

halite:its used in seasoning food and softening water

gypsum: it is used as fertilizer and road construction

copper: it is used for jewelry and currency

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A ball is dropped from somewhere above a window that is 2.00 m in height. As it falls, it is visible to a person boxing through
Irina18 [472]

Answer:

4.14 m

Explanation:

In the last leg of the journey the ball covers 2 m in 2ms or 0.2 s .

Let in this last leg , u be the initial velocity.

s = ut + 1/2 g t²

2 = .2 u + .5 x 9.8 x .04

u = 9.02 m /s .

Let v be the final velocity in this leg

v² = u² + 2 g s

v² = (9.02)² + 2 x 9.8 x 2

= 81.36 +39.2

v = 10.97 m / s

Now consider the whole height from where the ball dropped . Let it be h.

Initial velocity u = 0

v² = u² +2gh

(10.97 )² = 2 x 9.8 h

h = 6.14 m

Height from window

= 6.14 - 2m

= 4.14 m

5 0
3 years ago
An astronaunt takes am object to the moon where there is less gravity. Explain how the mass amd weight of an object on the moon
telo118 [61]
Even tho the object is big it will still Float around like a balloon cause of the gravity in space that's why they hook the rocket-ship into the ground of space 
6 0
3 years ago
Find the vector parallel to the resultant of the vector A=i +4j-2k and B=3i-5j+k​
Zinaida [17]

Answer:

2008

Explanation:

2000+3+5======2008

8 0
3 years ago
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What is the reaction for P₄ + 5 O₂ --> 2 P₂O₅
mixas84 [53]

Answer:

Combination or synthesis

Explanation:

The reaction is a combination or synthesis reaction in which two or more substances combines to give a single product.

In such a reaction there is formation of compounds from the union of their constituent elements.

 The driving force for such reactions is the large and negative heat of formation of the product.

So, this is a combination reaction.

7 0
3 years ago
A complete series circuit consists of a 12.0 V battery, a 4.70 O resistor, and a switch. The internal resistance of the battery
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With the switch open, there's no current in the circuit, and therefore
no voltage drop across any of the dissipative elements (the resistor
or the battery's internal impedance).  So the entire battery voltage
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4 0
3 years ago
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