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Nostrana [21]
3 years ago
15

A robotics scientist is trying to create a baseball pitching machine that will throw balls at different speeds and in exactly th

e same location every pitch. They have put a magnet in the baseball and behind home plate.
Explain to the scientist two reasons why some objects experience more kinetic energy than others?
Chemistry
2 answers:
natima [27]3 years ago
7 0

holaaaaAnswer:

                 

       Explanation:

Contact [7]3 years ago
6 0
KE is affected by 2 things mass and speed to create an energy performing simple Machine we need to understand how to create t a large force by a single(small force)
*i tried to explain it as easy as possible hope it helps
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Explanation:

Mole ratio of Zn to HCl = 1 : 2.

If we use all 2.0mol of Zn, we would need 2.0 * 2 = 4.0mol of HCl. However we only have 3.0mol of HCl.

Therefore HCl is limiting.

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What makes an acid a strong acid in water makes a base or weak base
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What is the correct name for the ionic compound, MgCl2?
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Answer:

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Americans combined drive about 4.0 x 109 kilometers a day and get an average of 20 miles per gallon of gasoline. For each kilogr
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Answer:

303,882.84649 kg\times 3=9.12\times 10^5 kg of carbon dioxide gas.

Explanation:

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Average distance covered by Americans in a minute= \frac{4.0\times 10^9 km}{1,440}=2,777,777.78 km

Average mileage of the car = 20 miles/gal = 32.18 km/gal

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Volume of gasoline used in minute = \frac{2,777,777.78 km}{32.18 km/gal}

V=86,320.00 gal

V=86,320.00\times 3.7854 L

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V=86,320.00\times 3.7854 \times 1000 mL=326,755,748.91 mL

Mass of 86,320.00 gallons of gasoline = m

Density of the gasoline = d = 0.93 g/cm^3=0.93 g/mL

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m=303,882,846.49 g=303,882.84649 kg

1 kilogram of gasoline gives 3 kg of carbon dioxde gas .

Then 303,882.84649 kg of gasoline will give :

303,882.84649 kg\times 3=9.12\times 10^5 kg of carbon dioxide gas.

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You put in a variable to substitute the unknown number.
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