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3 years ago

Benny wonders why when he presses his finger against a map nothing

Chemistry

1 answer:

AnnyKZ [126]3 years ago

6 0

The pressure exerted on a surface by an object increases as the surface area of contact decreases.

Explanation:

Pressure measures the amount of force exerted per a given area of an object. From this definition, the surface area of the object and force applied, affects the pressure applied.

As Benny presses his finger against a map, nothing happens to the map because the force applied is affected by the increased surface area of his finger. However as he presses a thumbtack into the map using the same force the tack will probably poke a hole in the map because the small( decreased) surface area of the sharp point of the thumbtack produces a much larger pressure on the map than the area of Benny finger. I hope this helps, thanks!

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In November 1987, a massive iceberg broke loose from the antartic ice mass and floated free in the ocean. The chunk of ice was e

il63 [147K]

<h2>Answer:</h2>

1.58 × 10∧16 pools.

<h3>Explanation:</h3>

Given:

Length of ice berg= 98 miles = 1557716 meters

Width of iceberg = 25 miles = 40233.6 meters

Thickness of iceberg = 750 ft = 230 meters

Volume of water in a swimming pool = 24,000 gallons = 90850 liters

The volume of the ice berg:

Volume = Length . width . thickness

Volume = 1557716 . 40233.6 . 230 = 1,441, 468, 016, 5248 m3 = 1,441, 468, 016, 5248 × 10 ∧3 L.

1 pool contains liters of water: 90850 liters

1,441, 468, 016, 5248 × 10 ∧3 liters contains = 1/90850 . 1,441, 468, 016, 524.8 × 10 ∧3 .

= 1.100 . 1,441, 468, 016, 5248 × 10 ∧3 L.

= 1.58 × 10∧16 pools.

Hence 1.6 × 10∧16 pools will be filled with that chunk of ice.

4 0

3 years ago

Pls complete the table with the correct answer

nalin [4]

Answer:

The correct answer is :

Natural fibres: these fibers are found naturally in the environment such as cotton, hemp or wool, all are made naturally found fibers.

sr. no. name type

1 Cotton natural

2 Linen natural

3 Silk natural

4 Wool natural

5. Hemp natural

Artificial fibres: made from the polymerization of their monomer unit for example polyester made from coal and petroleum products.

sr. no. name type

1 Polyester artificial

2 Rayon artificial

3 Spandex artificial

4 Acrylic artificial

5. microfibers artificial

6 0

3 years ago

Helppp me pretty please

VashaNatasha [74]

Hsiang a Allahabad. Alaskans a w

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3 years ago

A sample obtained from the national bureau of standards had a calibrated weight of 20.000. When it was used tocalibrate a studen

melisa1 [442]

Answer : The measurements are both precise and accurate.

Explanation :

Accuracy : It is defined as the closeness of a measured value to a standard or known value.

For Example: If the mass of a substance is 50 kg and one person weighed 48 kg and another person weighed 55 kg. Then, the weight measured by first person is more accurate.

Precision : It is defined as the closeness of two or more measurements to each other.

For Example: If you weigh a given substance five times and you get 1.8 kg each time. Then the measurement is said to be precise.

Level of precision is determined by the maximum number of decimal places.

When the level of precision is very very less, the measurement can be considered as most precise and most accurate.

As we are given the standard value of the sample is 20.000 and the values measured by the balance are, 19.995, 20.005, 20.001.

Since these three values are in the range of +/- 0.005 from one another. So, we can say that the measurements are both precise and accurate.

Hence, the measurements are both precise and accurate.

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4 years ago

Imagine disease kills 85 percent of the wolf population. How will it affect the other organisms?

stealth61 [152]

Answer:

There would most likely be an overpopulation of the animals the wolfs ate.

Explanation:

7 0

3 years ago

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