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sveta [45]
3 years ago
9

An object is falling under the influence of gravity in presence of air resistance . There are two forces acting on it. (i) What

are these two forces? (ii)Explain why will the object start moving with uniform velocity after some time?
Physics
1 answer:
MatroZZZ [7]3 years ago
8 0

Answer:

1 the forces are:friction, gravitational pull

2.i guess due to uniform change in displacement per unit time therefore uniform acceleration

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A skateboarder is traveling at a velocity of 8 m/s. She slows down and comes to a stop in 4 seconds. Calculate the skater’s acce
alexdok [17]

Answer:

Go to this link it has many examples - https://staff.retsd.mb.ca/public/or4xe53elrzxg5ldmjuwe3i/Lists/SharedDocuments/Physics/14.2.PDF

Explanation:

Link ^

8 0
2 years ago
Potential energy and kinetic energy are forms of what kind of energy? 1. chemical 2. nuclear 3. electromagnetic 4. heat 5. mecha
blsea [12.9K]
Heat and mechanical energy.
4 0
3 years ago
Which of the following is an example of the law of multiple proportions?
ser-zykov [4K]

The answer option which is an example of the law of multiple proportions is: B) Two different compounds formed from carbon and oxygen have the following mass ratios: 1.33 g O: 1 g C and 2.66 g O: 1 g C.

The Law of Multiple Proportions is also referred to as Dalton's Law and it states that when two chemical elements combine to form more than one chemical compound, the masses (weights) of one chemical element that combine with a fixed mass (weight) of the other chemical element will always be in a ratio of small whole numbers.

According to the Law of Multiple Proportions, when two chemical elements combine to form two different chemical compound, the masses (weights) of one chemical element that combine with 1 gram of the other chemical element can be expressed as a ratio of small whole numbers.

For example, carbon and oxygen react to form either carbon monoxide and carbon dioxide.

<u>Carbon monoxide (CO):</u>

12 grams of C = 16 grams of O.

1 gram of C = 1.33 gram of O.

<u>Carbon dioxide (</u>CO_2<u>):</u>

12 gram of C = 32 grams of O.

1 gram of C = 2.66 gram of O.

Ratio of oxygen (O) = 16:32 = 1:2 (Law of Multiple Proportions).

Read more: brainly.com/question/21280037

Your question is lacking the necessary answer options, so I will be adding them here:

A. A sample of chlorine is found to contain three times as much Cl-35 as Cl-37.

B. Two different compounds formed from carbon and oxygen have the following mass ratios: 1.33 g O: 1 g C and 2.66 g O: 1 g C.

C. Two different samples of table salt are found to have the same ratio of sodium to chlorine.

D. The atomic mass of bromine is found to be 79.90 amu.

E. Nitrogen dioxide always has a mass ratio of 2.28 g O: 1 g N.

3 0
2 years ago
A 95-kg astronaut is stranded from his space shuttle. He throws a 2-kg hammer away from the shuttle with a velocity of 19 m/s .
geniusboy [140]

Answer:

The astronaut will be propelled towards the shuttle at the rate of 0.4 m/s.

Explanation:

Given;

mass of  the astronaut, m₁ = 95 kg

mass of the hammer thrown, m₂ = 2 kg

velocity of the hammer, v₂ = 19 m/s

let the recoil velocity of the shuttle = v₁

Apply the principle of conservation of linear momentum;

m₁v₁ = m₂v₂

v₁ = m₂v₂/m₁

v₁ = (2 x 19) / 95

v₁ = 0.4 m/s

Therefore, the astronaut will be propelled towards the shuttle at the rate of 0.4 m/s.

5 0
2 years ago
Can someone help me with these questions please?
Alenkinab [10]

Answer:

pang anong grade po yan kasi grade 4 palang po

kasi ako

8 0
2 years ago
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