Consider a car turning about curved path of radius 40 m and banking angle 5 degree without skidding.

What is the formula for calculating acceleration

Komok [63]

Answer:

the formula for calculating acceleration is ending speed minus starting speed divided by time.

7 0

3 years ago

An electron moves through a uniform electric field E = (2.00î + 5.40ĵ) V/m and a uniform magnetic field B = 0.400k T. Determine

EleoNora [17]

Answer: $a=1.75\times 10^{21}\left ( 2\hat{i}5.08\hat{j}\right )$

Explanation:

Given

Electric Field $\vec{E}=2\hat{i}+5.4\hat{j}$

$\vec{B}=0.4\hat{k}\ T$

velocity $\vec{v}=8\hat{i} m/s$

mass of electron $m=9.1\times 10^{-31} kg$

Force on a charge Particle moving in Magnetic Field

$F=e\left [ \vec{E}+\left ( \vec{v}\times \vec{B}\right )\right ]$

$a=\frac{e\left [ \vec{E}+\left ( \vec{v}\times \vec{B}\right )\right ]}{m}$

$a=\frac{1.6\times 10^{-19}\left [ 2\hat{i}+5.4\hat{j}+\left ( 8\hat{i}\times 0.4\hat{k}\right )\right ]}{9.1\times 10^{-31}}$

$a=1.75\times 10^{21}\left ( 2\hat{i}+5.08\hat{j}\right )\ m/s^2$

7 0

3 years ago

in three situations, a briefly applied horizontal force changes the velocity of a hockey puck that slides over frictionless ice.

victus00 [196]

The work done on the Puck by the applied force from the most positive to the most negative is c, b, a respectively.

According to Newton's second law of motion, the force applied to an object is directly proportional to the product of mass and acceleration of the object.

F = ma

$F= \frac{mv}{t}$

The force applied to an object increases with increases in the velocity of the object.

In the given diagram, the resultant velocity of the puck is calculated as follows;

Figure a:

$\Delta v = v_f -v_i\\\\\Delta v = 5 - 6 = - 1 \ m/s$

Figure b:

$v = \sqrt{4^2 + 3^2} \\\\v = 5 \ m/s$

Figure c:

$\Delta v = 4 - (-2)\\\\\Delta v = 6 \ m/s$

Thus, the work done on the Puck by the applied force from the most positive to the most negative is c, b, a respectively.

Learn more here:brainly.com/question/19498865

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,

Nuclear Family
Single Parent
Extended Family
Childless Family
Step family
Grandparent Family

Defining each Family and their pros and cons :

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.

Pros of nuclear family:

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

Cons of nuclear family:

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.

Pros of single parent:

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

Cons of single parent:

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.

Pros of extended family:

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

Cons of extended family:

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.

Pros of childless family:

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

Cons of childless family:

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).

Pros of step family:

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

Cons of step family:

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.

Pros of grandparent family:

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

Cons of grandparent family:

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

Similarities and Differences:

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

An object is dropped from an airplane and takes 72 seconds to hit the ground. What is the magnitude of its VF Y ?

Dafna1 [17]

The final vertical velocity of the object is 705.6 m

Explanation:

Here we have to analyze the vertical motion of the object, which is a free fall motion, with constant acceleration of

$g=9.8 m/s^2$