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kow [346]
3 years ago
10

What is the mass of an object that weighs 686N on Earth?

Physics
1 answer:
Oxana [17]3 years ago
8 0

Answer:

70 kg is the mass of the object

Explanation:

This question can be solved with this simple formula:

Weight force = mass . gravity

686 N = mass . 9.8 m/s²

686 N /  9.8 m/s² = mass → 70 kg

Note → 1N = 1 kg . m / s²

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Which of the following are not correctly balanced reactions?
djyliett [7]

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3 0
3 years ago
Read 2 more answers
• If the spring shown is pulled by 400N force. The stretch (s) of the spring will be:
RSB [31]

Answer:

2m

Explanation:

The Force of a spring = Spring Constant,K × extension

Hence extension or stretch = 400/200= 2m

3 0
2 years ago
The average marathon runner can complete the 42.2-km distance of the marathon in 3 h and 30 min. If the runner's mass is 85 kg,
Semenov [28]

Answer:

the runner's average kinetic energy during the run is 476.96 J.

Explanation:

Given;

mass of the runner, m = 85 kg

distance covered by the runner, d = 42.2 km = 42,200 m

time to complete the race, t = 3 hours 30 mins = (3 x 3600s) + (30 x 60s)

                                                                               = 12,600 s

The speed of the runner, v = d/t

                                          v = 42,200 / 12,600

                                          v = 3.35 m/s

The runner's average kinetic energy during the run is calculated as;

K.E = ¹/₂mv²

K.E = ¹/₂ × 85 × (3.35)²

K.E = 476.96 J

Therefore, the runner's average kinetic energy during the run is 476.96 J.

5 0
2 years ago
Ask Your Teacher In Example 24.6, we found that the electric field of a charged disk approaches that of a charged particle for d
Ulleksa [173]

Answer: E = 7394.6N/C

Explanation:

Please find the attached file for the solution

8 0
3 years ago
Learning Task 3: Read the characteristics of mixtures given in the second column. Identify if it is homogeneous or heterogeneous
madreJ [45]

1. Components can be separated by physical means  [heterogenous]

2. The additive component is so<em> </em>finely dispersed in the main ingredient   such that it can't be seen  [homogenous]

3. Particles are uniformly distributed  [homogenous]

4. The substances are identified in<em> </em>different phases  [heterogenous]

5. Particles are<em> </em>non-uniformly distributed  [heterogenous]

A homogenous mixture is a type of mixture in which the composition is uniform throughout the mixture.

Characteristics of a homogenous mixture:

  • the mixture is uniform
  • the composition is the same
  • it consists of one phase

A  heterogenous mixture is a type of mixture in which the composition of the mixture is not uniform

Characteristics of heterogenous mixture include;

  • it contains two or more ingredients or phases.
  • different phases mixed together, which are physically separated  
  • samples obtained from different parts of the mixture may have a different composition

In the given characteristics of the mixture  in the question we can classify them as follows;

1. Components can be<u> separated by physical mean</u>s --heterogenous

2. The additive component is so<em> </em><u>finely dispersed </u>in the main ingredient   such that it can't be seen --- homogenous

3. Particles are<u> uniformly distributed </u>---- homogenous

4. The substances are identified in<em> </em><u>different phases</u> ---- heterogenous

5. Particles are<em> </em><u>non-uniformly distributed </u>---- heterogenous

Learn more here: brainly.com/question/18224061

6 0
2 years ago
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