2 A sailboat on a lake sails 40. meters north and

Physics

1 answer:

UkoKoshka [18]2 years ago

4 0

Answer: 3

57m north east

Explanation:

Given that the boat sails 40. meters north and then sails 40. meters due east. The new position will be known by using pythagorean theorem.

P^2 = 40^2 + 40^2

P^2 = 1600 + 1600

P^2 = 3200

P = square root (3200)

P = 56.6 m

P = 57 m (approximately )

Therefore, the new position of the sail boat will be 57 north east

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Greg walks on a straight road from his home to a convenience store 3.0 km away with a speed of 6.0 km/h. On reaching the store h

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This question was apprently selected from the "Sneaky Questions" category.

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That's 30 minutes. So the whole part-(a.) of the question refers to only that part of the trip, and we don't care what happens once he reaches the store.

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2 years ago

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A metal, M, forms an oxide having the formula M2O3 containing 52.92% metal by mass. Determine the atomic weight in g/mole of the

irina [24]

Answer:

The atomic weight in g/mole of the metal (molar mass) is 8.87.

Explanation:

To begin, it is possible to assume that, as a sample, it has 100 g of the compound. This means that:

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Using the molar mass of oxygen, which is 16 g / mol, it is possible to calculate the amount of moles of oxygen present in the sample using the rule of three:

$moles of oxygen=\frac{47.8g*1mol}{16g}$