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MrMuchimi
3 years ago
8

Show that the units N/kg can be written using only units of meters (m) and second (s). Is this a unit of mass ,acceleration or f

orce.
Physics
1 answer:
nikdorinn [45]3 years ago
3 0
<span>When the difference between two results is larger than the estimates error, the result is</span>
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What are all the Newton’s laws of motion?
balandron [24]
1st Law Of Motion: An object will often remain at rest or continue moving unless acted upon.
2nd Law Of Motion: Force is equal to mass times acceleration
3rd Law Of Motion: For every action there is an equal or opposite reaction
3 0
3 years ago
Calculate the object's velocity as shown on the position-time graph,
Cloud [144]

Answer:

10 m/s

Explanation:

The following data were obtained from the question:

Initial Displacement (d1) = 10 m

Final Displacement (d2) = 60 m

Initial time (t1) = 0 s

Final time (t2) = 5 s

Velocity (v) =.?

Next, we shall determine the change in displacement of the object and likewise the change in time.

This can be obtained as follow:

Initial Displacement (d1) = 10 m

Final Displacement (d2) = 60 m

Change in displacement (Δd) = d2 – d1

Change in displacement (Δd) = 60 – 10

Change in displacement (Δd) = 50 m

Initial time (t1) = 0 s

Final time (t2) = 5 s

Change in time (Δt) = t2 – t1

Change in time (Δt) = 5 – 0

Change in time (Δt) = 5 s

Finally, we shall shall calculate the velocity of the object as illustrated below:

Change in displacement (Δd) = 50 m

Change in time (Δt) = 5 s

Velocity (v) =.?

v = Δd/Δt

v = 50/5

v = 10 m/s

Therefore, the velocity of the object is 10 m/s.

4 0
3 years ago
What is the purpose of family?
Marrrta [24]

Answer:

Purpose of family:

Basically main role of a family towards the society is its continuity by both reproduction and  interaction with each other. The main contribution of family to the society is society's continuation.

Types of families:

The family further divided into six types nowadays. Namely,

  1. Nuclear Family
  2. Single Parent
  3. Extended Family
  4. Childless Family
  5. Step family
  6. Grandparent Family

<u>Defining each Family and their pros and cons :</u>

1). Nuclear Family: The most basic kind of family is nuclear family based on two parents and their biological or adopted children. Number of children is variable, some have one and others have more than one. The main aim of the nuclear family is to up bring their kids and teach them how to socialize in the society.

<u>Pros of nuclear family</u>:

  • Both parents work and more likely financially stable
  • Children gets more balanced parenting
  • Concerned about education
  • Focus more on health issues both mental and physical
  • More socialize in the society

<u>Cons of nuclear family</u>:

  • Higher level of stress factor due to increased number of dependents
  • Have higher rates of disputes
  • Children become egotistical due to over possessive parents

2). Single Parent: Consists of either a mother or a father living with one or more than one child. Parents may initially married, separated or departed, or passed away (one of them). Like other family structures single parents also have some pros and cons.

<u>Pros of single parent</u>:

  • Close relationship with each other due to less family members
  • More responsible as duties are not being further divided.
  • Both children and parents are strong and independent

<u>Cons of single parent</u>:

  • Less income due to sole parent
  • May relay on financial help
  • Quality living may compromise due to sole earning
  • Children become mentally unstable by living alternatively with parents (in divorced cases).

3). Extended Family: Basically extended families are joint families, in which grandparents, parents and children live together to support each other both financially and socially.

<u>Pros of extended family</u>:

  • More tolerance level among children
  • Care and  Respects for people older in age is practiced
  • Have emotional support
  • Have social support

<u>Cons of extended family</u>:

  • Face more financial crises due to large number of members in a family
  • Intervening in personal matters with each other
  • Low privacy

4).Childless Family: Partners who have no any children either by choice or due to infertility.

<u>Pros of childless family</u>:

  • More financially strong
  • No one to take care of
  • More free to do basic thing like travelling, shopping and fun activities
  • Have more chance to fulfill desired goal

<u>Cons of childless family</u>:

  • Develop fear of isolation by the time
  • Society pressure (not having kids)
  • Develop sense of lacking something important (infertile couples)

5). Step family:

When two families start living to gather, like two divorced people get married and living together with their children (from 1st partner).

<u>Pros of step family</u>:

  • Child gets advantage by living with both parents
  • Financially stable due to two source of incomes

<u>Cons of step family</u>:

  • Feeling of living forcefully with second parent
  • Couple fight often due to each other's children conflict
  • children develop leas tolerance

6) Grandparent Family: In which grandchildren are raised by their grandparents.

<u>Pros of grandparent family</u>:

  • Children have strong relationship with their elderly
  • More protective environment for children

<u>Cons of grandparent family:</u>

  • Less financially table
  • Difficult to raise children due to old age and related health issue
  • Big age gap  

<u>Similarities and Differences:</u>

By considering the pros and cons of different family structure we come to the point that many of them have some similarities like financial stability, strong bonding, and more socialization. Likewise there are few differences as well as some families share strong bond while other suffers from isolation. Some are more financially stable and others are less. Some have children while other are childless. Some children have both parents while other have single or step patent. Some of them have high tolerance while other has less. Some live quality life whiles other compromise on their needs and wants.

7 0
3 years ago
Light-rail passenger trains that provide transportation within and between cities speed up and slow down with a nearly constant
rosijanka [135]

Answer:

v_f = 13m/s + 0.75 \frac{m}{s^2} * 16 s= 13 m/s +12m/s = 25 m/s

Explanation:

For this case we know that the initial velocity is given by:

v_i = 7 \frac{m}{s}

The final velocity on this case is given by:

v_f = 13 \frac{m}{s}

And we know that it takes 8 seconds to go from 7m/s to 13m/s. We can use the following kinematic formula in order to find the acceleration during the first interval:

v_f = v_i +at

If we solve for the acceleration we got:

a = \frac{v_f -v_i}{t} = \frac{13 m/s -7 m/s}{8 s}= 0.75 \frac{m}{s^2}

So for the other traject we assume that the acceleration is constant and the train travels for 16 s. The initial velocity on this case would be 13m/s from the first interval and we can find the final velocity with the following formula:

v_f = v_ i +a t

And if we replace we got:

v_f = 13m/s + 0.75 \frac{m}{s^2} * 16 s= 13 m/s +12m/s = 25 m/s

5 0
4 years ago
PLZ HELP DUE TODAY ! ! ! ! A student built the following circuit from a diagram. What can the student do to make this a complete
Kamila [148]
I would say the last one but I’m not sure if I’m directly correct ..
8 0
2 years ago
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