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Helen [10]
4 years ago
7

The reaction between magnesium (Mg) and oxygen (O2) forms magnesium oxide (MgO).

Physics
1 answer:
Scorpion4ik [409]4 years ago
3 0

Answer:

2 Mg + O2 = 2MgO

Type: Synthesis

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A car bounces up and down on its springs at 1.0 Hz with only the driver in the car. Now the driver is joined by four friends. Th
romanna [79]

The new frequency of oscillation when the car bounces on its springs is 0.447 Hz

<h3>Frequency of oscillation of spring</h3>

The frequency of oscillation of the spring is given by f = (1/2π)√(k/m) where

  • k = spring constant and
  • m = mass on spring

Now since k is constant, and f ∝ 1/√m.

So, we have f₂/f₁ = √(m₁/m₂) where

  • f₁ = initial frequency of spring = 1.0 Hz,
  • m₁ = mass of driver,
  • f₂ = final frequency of spring and
  • m₂ = mass on spring when driver is joined by 4 friends = 5m₁

So, making f₂ subject of the formula, we have

f₂ = [√(m₁/m₂)]f₁

Substituting the values of the variables into the equation, we have

f₂ = [√(m₁/m₂)]f₁

f₂ = [√(m₁/5m₁)]1.0 Hz

f₂ = [√(1/5)]1.0 Hz

f₂ = 1.0 Hz/√5

f₂ = 1.0 Hz/2.236

f₂ = 0.447 Hz

So, the new frequency of oscillation when the car bounces on its springs is 0.447 Hz

Learn more about frequency of oscillation of spring here:

brainly.com/question/15318845

7 0
2 years ago
When hydrogen shares electrons with oxygen, the outermost shell of the hydrogen atoms are full with :
Alja [10]

Hydrogen is written as H2 and oxygen is written as O2

When they bond it is a covalent bond.

Hydrogen has 1 negative electron , which would attract one from oxygen, so its outer shell would have 2 electrons.

Oxygen outer shell holds 8 electrons.

The answer is

2 and 8

6 0
4 years ago
Read 2 more answers
Is it possible to have motion in the absence of a net force?
Vsevolod [243]

Answer:

It is impossible...

Explanation:

Under no circumstances this is possible because of the Newton’s 1st law of motion that states that a body shall continue its motion forever except the net fore is zero. When two opposing forces contract each other, they cancel out the action of each other and ultimately the net force become zero. If one body has a slightly more or less force then the net force will not be zero and the net magnitude of force will have a direction of motion.

8 0
4 years ago
Which describes how a simple machine can make work easier ?
sveta [45]
A simple machine can make work easier by reduce the amount of energy needed to perform a task, therefore, B. <span>it magnifies the potential energy so that the kinetic energy is greater</span> is the correct answer.
7 0
3 years ago
What can happen if the president chooses to veto a law that has been passed? The law returns to being introduced in one of the h
andre [41]

Answer:

The president s decision can be overridden by a majority of Congress.

Explanation:

If congress gets the majority (2/3) vote to pass it, its passed

4 0
3 years ago
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