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VladimirAG [237]
2 years ago
13

PLEASE HELP ASAP I EILL GIVE 100 POINTS!!! Kristy is on the track team. She runs the one kilometer race by going four times arou

nd the circular track. How does Kristy velocity change.
A. Her velocity changes countinually since her direction constantly changes
B. Her velocity depends on only on how she paces herself during the race
C. Her velocity is the same as her speed
D. Her speed changes at the same rate as velocity
Chemistry
1 answer:
qaws [65]2 years ago
5 0

Answer:A

Explanation:

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Is toothpaste suspension,colloid,solution?​
natima [27]

Answer:

Collid

Explanation:

Toothpaste is a colloid, because it's part solid and part liquid. ... A colloid is a heterogeneous mixture of two substances of different phases. Shaving cream and other foams are gas dispersed in liquid. Jello, toothpaste, and other gels are liquid dispersed in solid.

8 0
2 years ago
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How much heat is absorbed when 447 g of water , Cp = 4.184 J/goC, goes from 25.0 oC to 35.0 oC?
Digiron [165]

Answer:

The answer to your question is  Q = 18702.5 J

Explanation:

Data

mass of water = m = 447 g

Cp = 4.184 J/g°C

Temperature 1 = T1 = 25°C

Temperature 2 = T2 = 35°C

Heat = Q = ? Joules

Process

1.- Write the formula to calculate heat

    Q = mCp(T2 - T1)

2.- Substitution

    Q = (447)(4.184)(35 - 25)

3.- Simplification

    Q = (447)(4.184)(10)

4.- Result

    Q = 18702.5 J

8 0
3 years ago
6.285×10^3 mg = _____? _____ kg
TiliK225 [7]
One kilogram is equal to one thousand grams. Further, one gram is equal to 1000 mg. The conversion is as shown below,
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The numerical value of the operation above is 0.006285 kg. 
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How many valence electrons would an element with atomic number 113 have?
marshall27 [118]

How does the law of conservation of mass apply  to this reaction: C2H4 + O2 → H2O + CO2?

4 0
3 years ago
Many people in the world don't have access to clean drinking water. What may be the cause of this?
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Answer:

Climate change and an increase in unpredictable and extreme weather is a growing challenge. Long periods of drought affect clean water supplies while flooding can pollute clean water sources and cause outbreaks of disease.

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2 years ago
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