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WINSTONCH [101]
3 years ago
9

An 85 kg construction worker has 37 485 J of gravitational potential energy. To the nearest whole number, the worker is___

Chemistry
1 answer:
Dmitry [639]3 years ago
7 0

Answer:

44,1 m

Explanation:

Ep= m * g * h

37485 = 85 * 10 * h

h = 44,1 m

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5 points
Orlov [11]

Answer:

The correct option is (a).

Explanation:

We need to find the product of given numbers.

First number = 29.5

Second number = 240

Product of two numbers = 29.5 × 240

= \dfrac{295}{10}\times 240

Zeroes from numerator and denominator get cancelled.

So,

=295\times 24\\\\=7080

Hence, the correct option is (a).

7 0
3 years ago
What do all electrolytes have in common?
Lerok [7]
Your answer would be they have mobile ions in solution.
7 0
2 years ago
Even when an object appears to be at rest, its atoms and molecules are in constant motion
natita [175]

Answer:

the answer is True

Explanation:

the answer is True

5 0
2 years ago
Drinking water may contain a low concentration of lead ion (Pb2 ) due to corrosion of old lead pipes. The EPA has determined tha
Lynna [10]

Answer:

3.861x10⁻⁹ mol Pb⁺²

Explanation:

We can <u>define ppm as mg of Pb²⁺ per liter of water</u>.

We<u> calculate the mass of lead ion in 100 mL of water</u>:

  • 100.0 mL ⇒ 100.0 / 1000 = 0.100 L
  • 0.100 L * 0.0080 ppm = 8x10⁻⁴ mg Pb⁺²

Now we <u>convert mass of lead to moles</u>, using its molar mass:

  • 8x10⁻⁴ mg ⇒ 8x10⁻⁴ / 1000 = 8x10⁻⁷ g
  • 8x10⁻⁷ g Pb²⁺ ÷ 207.2 g/mol = 3.861x10⁻⁹ mol Pb⁺²
4 0
3 years ago
Poisons are more serious and harmful than toxins if ingested because the _____ is lower. Small amounts of poison can be extremel
Step2247 [10]

Answer:

The death is lower

Explanation:

im gonna get a warning watch

3 0
2 years ago
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