# Physics

Here are the questions:
1. A 0.45 kg book is resting on a dessktop 0.64 m high. Calculate the book's potential energy relative to
a)the desktop? b)the floor.

2. A 0.636 kg basketball has a potential energy of 19J at the basket. How high is the ball from the floor?

3. A hockey puck has a potential energy of 2.3J when it is held by a referee at a height of 1.4 m above the rink surface. calculate the mass of puck?

My solutions:(used Eg=mgh to get all solutions)
1. a) 2.8J b) 0
2. h=31m
3. 0.6176 kg

1. 👍
2. 👎
3. 👁
1. I think you reversed the answers on 1.
2. mgh=19
h= 19/(.636*9.8) didn't you miss the decimal place?
3. mgh=PE

1. 👍
2. 👎
👤
bobpursley
2. when i divided 2.3/(1.4*9.8) i got 0.1676

and for quesiton 1 do u mean that a) will be 0J sinse it is rest on the desktop and b) will be 2.8 J

1. 👍
2. 👎
3. yes, and yes.

1. 👍
2. 👎
👤
bobpursley

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There are 50 questions to answer in a triva contest. Each player starts with 100 points. He or she earns ten points for each correct answer but will lose four points for each incorrect answer. Each player must answer all 50
The content structure of the passage is as follows: It contains a set of physics questions and the student's answers, followed by a teacher's feedback on the student's answers.
multiple_questions_with_answers
Given a text passage, determine:
    1. If it contains a mathematical question (including word problems or calculations)
    2. If an answer to that mathematical question is provided in the text

First, describe the content structure you found in 1-2 sentences.

Then provide your analysis in the following format:
TYPE: <one of the following values>
- NO_QUESTION
- SINGLE_QUESTION
- SINGLE_QUESTION_WITH_ANSWER
- MULTIPLE_QUESTIONS
- MULTIPLE_QUESTIONS_WITH_ANSWERS
system
# Physics

Here are the questions:
1. A 0.45 kg book is resting on a dessktop 0.64 m high. Calculate the book's potential energy relative to
a)the desktop? b)the floor.

2. A 0.636 kg basketball has a potential energy of 19J at the basket. How high is the ball from the floor?

3. A hockey puck has a potential energy of 2.3J when it is held by a referee at a height of 1.4 m above the rink surface. calculate the mass of puck?

My solutions:(used Eg=mgh to get all solutions)
1. a) 2.8J b) 0
2. h=31m
3. 0.6176 kg

1. 👍
2. 👎
3. 👁
1. I think you reversed the answers on 1.
2. mgh=19
h= 19/(.636*9.8) didn't you miss the decimal place?
3. mgh=PE

1. 👍
2. 👎
👤
bobpursley
2. when i divided 2.3/(1.4*9.8) i got 0.1676

and for quesiton 1 do u mean that a) will be 0J sinse it is rest on the desktop and b) will be 2.8 J

1. 👍
2. 👎
3. yes, and yes.

1. 👍
2. 👎
👤
bobpursley

## Similar Questions

Determine the value of k for which the function f(x)= 4x^2- 3x+2kx+1 has two zeros. check these values in the original equation? i cant figure out the answer to it. It says in the book that it is k 3.5,but i don't know how they

2. ### Social Studies

which of these helped hinduism spread? A. The religion forced people to give up their old beliefs. {I think this is the answer} B. Hindus formed organized groups to worship together C. Other gods and traditions were absorbed into

Do you have a copy of the sentence check 2 questions for chapter 20 in the 4th edition of Improving Vocabulary Skill book by Sherrie L. Nist?

4. ### Math(Factorial)

A women student is to answer 10 out of 13 questions on a test. Find the number of choices where she must answer: (a) the first two questions; (b) the first or second questions but not both; (c) exactly 3 out of the first 5

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While discussion the pictures in a book, students ask their teacher many questions about the technique used to create such distinct pictures. Noticing the interest of the students, how can the teacher best address the interest in

2. ### Two English Questions (HELP!!)

1. Which of the following uses a pronoun in the possessive case? A. Ask Sarah to pass the chips to me. B. Check for my signature on the front page. C. He went to the park to find the dog. D. The winner of the contest was she. I

3. ### statistics

A multiple choice test has 3 questions and each question has 3 choices. If Nacho takes this test, what is the probability that he will: (a)answer all questions correctly? (b)answer all questions wrong? (c)answer two questions

4. ### Maths

An examination consists of a section A, containing 10 short questions, and a section B, containing 5 long questions. Candidates are required to answer 6 questions from section A and 3 questions from section B.Find the number of

1. ### Enghish

Please check my answer thanks :) In the sentence "Although the book was more than 50 years old, it still contained helpful information", the word although is what. I said it's adjective

2. ### social studies

Can you help me? I am stumped! We are supposed to use our book to fill in the answers. This is the questions I need your help with 1. A (n) is a state's or a country's system of producing, and consuming goods and services. My

3. ### physics

A hydraulic jack in a gas station lifts a 900kg car a distance of .25cm When a force of 150N pushes a piston through a distance of 20cm Find the IMA (book answer is 80) AMA (book answer is 59) Efficency (book answer is 74%) can

4. ### Algebra word problem

There are 50 questions to answer in a triva contest. Each player starts with 100 points. He or she earns ten points for each correct answer but will lose four points for each incorrect answer. Each player must answer all 50
user
The content structure of the passage is as follows: It contains a set of physics questions and the student's answers, followed by a teacher's feedback on the student's answers.

TYPE: MULTIPLE_QUESTIONS_WITH_ANSWERS