You're working for FedEx lifting boxes onto a truck from the ground nearby. There's a ramp attached to the end of the truck that some other people are using to walk boxes up into it. Who is doing more work on the boxes (assuming they're identical): the people walking the boxes up, or you lifting the boxes straight into the truck?

Answers

Answer 1

Answer:

In simple words, the work done by all the parties is actually same. This case could be understood by using the theories of potential energy. The work performed should be measured as equivalent as the work done is equal to the increase in gravitational energy potential and is the same with all cases as the possible change in energy based on truck height or elevation and regardless of direction.


Related Questions

Which of the following prohibits consumers from taking cash from manufacturers, suppliers, or their representatives for making recommendations, reviews, or endorsements, unless full disclosure is provided?
A. The world of mouth Marketing association's ethics code.
B. The fourth principle of IMC
C. The American associations of advertising agencies creative

Answers

Answer:

A. The world of mouth Marketing association's ethics code.

Explanation:

The world of mouth Marketing association's is an organization which was founded in 2004 and ensures healthy word of mouth and social media marketing . It ensures a honest form of Relationship, Opinion, and Identity between the Producers and consumers.

The organization has ethics code which prohibits consumers from taking cash from manufacturers, suppliers, or their representatives for making recommendations, reviews, or endorsements, unless full disclosure is provided.

Most US adults have social ties with a large number of people, including friends, family, co-workers, and other acquaintances. It is nearly impossible for most people to reliably list all the people they know, but using a mathematical model, social analysts estimate that, on average, a US adult has social ties with people.1 A survey of randomly selected US adults who are cell phone users finds that the average number of social ties for the cell phone users in the sample was with a standard deviation of . Does the sample provide evidence that the average number of social ties for a cell phone user is significantly different from , the hypothesized number for all US adults?

Answers

Hello. This question is incomplete. The full question is:

Most US adults have social ties with a large number of people, including friends, family, co-workers, and other acquaintances. It is nearly impossible for most people to reliably list all the people they know, but using a mathematical model, social analysts estimate that, on average, a US adult has social ties with 634 people.1 A survey of 1700 randomly selected US adults who are cell phone users finds that the average number of social ties for the cell phone users in the sample was 664 with a standard deviation of 778. Does the sample provide evidence that the average number of social ties for a cell phone user is significantly different from 634, the hypothesized number for all US adults?

Answer:

The sample does not provide evidence that the average number of social ties for a cell phone user is significantly different from 634.

Explanation:

First, it is necessary to find out if the average number of social connections for a cell phone user is significantly different from 634 people. For this, we will consider:

H₀: The average number of social connections for a cell phone user is 634 people. For this we will use μ = 634.

Hₐ: The average number of social connections for a cell phone user is different from 634 people. For this we will use μ ≠ 634.

After these considerations we will adopt the following information:

n = 1700

'X = 664

SD = 778

We can see that the size of the sample is very large and as the population is unknown, we will use the concepts of the central limit theorem and adopt the average sample distribution in the same way as the normal distribution. For this reason, a single mean z test will be appropriate in this case.

After understanding the information, we can calculate the test value. For this it will be necessary to use the formula:

z= ('x-μ)/(SD/√n)

z =(664-663)/(778/√1700) = 1.59

When finding this value, you must take into account whether the p-value of the test is less than the significance level.

The p-value for the two-tailed test is found by the formula:

p - value = 2 * P (Z> 1.59)

p - Value = 2 [1-P (Z> 1.59)

p- value = 2 * (1-0.944) = 0.112

The p-test reveals a very high value in relation to the level of significance and shows that the null hypothesis must be rejected. Based on this, we can say that we have no factor that proves that the average number of social connections for a cell phone user is different from 634 people.

Tyler is 14 years old. He has just been expelled from school for bringing a knife. He has been arrested on two previous occasions - once for beating up another boy very badly and another time for setting fire to his neighbor's barn. Tyler's parents are at their wit's end and don't know what to do. According to the DSM-5 Tyler would likely be diagnosed with: a. Antisocial Personality Disorder b. Conduct disorder c. Oppositional defiant disorder d. Psychopathy

Answers

Answer:

D. Psychopathy

When a person makes a moral decision based on wanting to make sure that the decision is acceptable in the community, the person's moral reasoning is at the ________ level.

Answers

Answer:

Conventional.

Explanation:

This was been propounded by Lawrence Kohlberg where it was explained to have different levels of reasoning. The conventional falls in as the second level of the many stages of reasoning. During this level, a child's reasoning is said to be tied to some traditional and mostly societal reasonings. Also during this conventional level, a child’s sense of morality is tied to personal and other factors that show relationships to his reasoning. It is seen that in this stage children seem to continue to accept the rules of authority figures, which is primarily based on the belief that this is necessary in keeping up their positive relationships and order in the society they find themselves.

why is society needed? write your opinion.​

Answers

Answer:

Hence, in order to live the life in a very comfortable way, society is the most. Food, shelter, and clothes are essential for a person to live. ... The person needs the group of people of the society. In human life, there are so many threats like the danger of wild animals, natural calamities, theft and so on.

Explanation:

11. Warsaw Pact was organised by :
(a) USSR
(c) China
s, (a).
(6) USA
(d) India.​

Answers

Answer:

USSR

Explanation:

Answer:1955

May 14

The Warsaw Pact is formed

The Soviet Union and seven of its European satellites sign a treaty establishing the Warsaw Pact, a mutual defense organization that put the Soviets in command of the armed forces of the member states.

The Warsaw Pact, so named because the treaty was signed in Warsaw, included the Soviet Union, Albania, Poland, Romania, Hungary, East Germany, Czechoslovakia and Bulgaria as members. The treaty called on the member states to come to the defense of any member attacked by an outside force and it set up a unified military command under Marshal Ivan S. Konev of the Soviet Union. The introduction to the treaty establishing the Warsaw Pact indicated the reason for its existence. This revolved around “Western Germany, which is being remilitarized, and her inclusion in the North Atlantic bloc, which increases the danger of a new war and creates a threat to the national security of peace-loving states.” This passage referred to the decision by the United States and the other members of the North Atlantic Treaty Organization (NATO) on May 9, 1955 to make West Germany a member of NATO and allow that nation to remilitarize. The Soviets obviously saw this as a direct threat and responded with the Warsaw Pact

Explanation:

Describe where you are (in your life) and what you want to learn

Answers

Answer:

Im nearing midlife and i want to learn what life could really have in store for me and what challenges im going to face

Explanation:

A student remembers a long list of outdoor sculptures by imagining each piece on top of a different campus building, along Campus Drive. What memory strategy is being used?

Answers

Answer:

The method of loci is being used by this student.

Explanation:

The loci method is a strategy to memorize better that consists of mentally associating an image with a certain place, that is, it consists of visualizing what we want to memorize and the “place” in which we keep it, establishing relationships between the contents and the images we generate from them. This implies that each content to be memorized is going to become a mental image that can be “seen” in the memory palace, with its spatial location and the rest of the objects (contents) related to it. The student has associated specific data with specific three-dimensional spaces, in this way it will be easier to remember it and to be able to use the information in an easy and accessible way.

Verify Identities:
sec²a=1/1-sin²a​

Answers

Answer:  see proof below

Explanation:

[tex]sec^2\alpha=\dfrac{1}{1-\sin^2 \alpha}[/tex]

LHS → RHS

[tex]sec^2\alpha\qquad \text{Given}\\\\\dfrac{1}{cos^2\alpha}\qquad \text{sec is reciprocal of cos}\\\\\\\dfrac{1}{1-sin^2\alpha}\qquad \text{Identity}:cos^2\alpha + sin^2\alpha = 1\\\\\\\dfrac{1}{1-sin^2\alpha}=\dfrac{1}{1-sin^2\alpha}\quad \checkmark[/tex]

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