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olya-2409 [2.1K]
3 years ago
10

What volume of air containing 21% of oxygen (by volume) is required to completely burn 10g of sulphur which has a purity level o

f 98%?​
Physics
1 answer:
coldgirl [10]3 years ago
8 0

Answer:

try using google mabey that might help

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The melting point of a substance is the same as its _____ point.
kirza4 [7]

Answer:

Boiling point

Explanation:

5 0
2 years ago
a simple machine that combines two inclined planes and is used to split objects is called a . group of answer choices
Semmy [17]

Answer:

The answer is a wedge.

Explanation:

The wedge is a combination of two inclined planes. It is used to separate bodies which are held together by large forces, e.g, splitting timber

M.A.= slant height of wedge/thickness of wedge.

Hence a long thin wedge has a higher mechanical advantage than a short thick one; or the smaller the angle theta between the slant heights, the greater the mechanical advantage.

5 0
1 year ago
1. A wave on a rope has a wavelink of 2.0m And a frequency of 2.0 Hz. What is the speed of the wave?
marin [14]

Answer:

1.

2.

3.500

4.

5. 2

Explanation:

will do rest later

3 0
2 years ago
A person throws a ball and angle of 30° a velocity of 40 m/s how fast is the ball traveling up?​
Zanzabum

Answer:

20 m/s

Explanation:

The vertical component of the velocity of the ball is equal to the length of the perpendicular of a triangle such that it makes an angle of 30 degrees from the base and the length of the hypotenuse is 40 m/s. Sin(∅)*hypotenuse is the length of the perpendicular.

Vertical component of velocity is given by 40Sin(30°)=20

8 0
3 years ago
On a planet far, far away, an astronaut picks up a rock. The rock has a mass of 4.80 kg , and on this particular planet its weig
Oksanka [162]

Answer:

   a = 1,375 m / s²

Explanation:

For this exercise we use Newton's second law where the force applied by the astronaut is F = 48.1, the body weight is W = 41.5 N and the body mass is m = 4.80 kg

              F - W = m a

              a = (F -W) / m

let's calculate

              a = (48.1 - 41.5) / 4.80

              a = 1,375 m / s²

this acceleration is directed upwards

3 0
3 years ago
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