Answered step by step

Verified Expert Solution

Link Copied!

Question

1 Approved Answer

Posted on Jul 06, 2024

A painter uses 1.93 kj of mechanical energy to lift a 20 kg paint barrel to a height of 7.5 m above the ground. a.

A painter uses 1.93 kj of mechanical energy to lift a 20 kg paint barrel to a height of 7.5 m above the ground.

a. how much work was done lifting the paint barrel?

b. how much energy does the paint barrel actually possess at the top?

c. what is the efficiency of the ropeand-pulley system?

Step by Step Solution

There are 3 Steps involved in it

Step: 1

Get Instant Access to Expert-Tailored Solutions

See step-by-step solutions with expert insights and AI powered tools for academic success

Step: 2

Step: 3

Ace Your Homework with AI

Get the answers you need in no time with our AI-driven, step-by-step assistance

Get Started

Recommended Textbook for

Infrared Technology Fundamentals

Authors: Monroe Schlessinger

2nd Edition

1351438344, 9781351438346

More Books

Students also viewed these Physics questions

Question

★★★★★

Fly-Buy Frisbees sells a wide variety of frisbees and uses a perpetual inventory system. On June 1, Fly- Buy Frisbees had five Fast Flying Frisbees on hand at a unit cost of $105. During June and...

Answered: 1 week ago

Question

★★★★★

Aniline, abbreviated NH 2 , where is C 6 H 5 , is an important organic base used in the manufacture of dyes. It has K b = 4.3 * 10 -10 . In a certain manufacturing process, it is necessary to keep...

Answered: 1 week ago

Question

★★★★★

If two events A and B, defined in the same sample space , are mutually exclusive, then A B = .

Answered: 1 week ago

Question

★★★★★

On paper, replicate the following segment of DNA: 5 A T C G G C T A C G T T C A C 3 3 T A G C C G A T G C A A G T G 5 a. Show the direction of replication of the new strands and indicate the location...

Answered: 1 week ago

Question

★★★★★

To map a weak entity from the E/R diagram to the relational data model, we must: Select one: a. For each weak entity type W in the ER schema with owner entity type E, create a relation R & include...

Answered: 1 week ago

Question

★★★★★

E3-11 Recording Accrual Basis Journal Entries [LO 3-2, LO 3-3] Rowland & Sons Air Transport Service, Inc., has been in operation for three years. The following transactions occurred in February 2013:...

Answered: 1 week ago

Question

★★★★★

Compute the matrix exponential e At for each system x' = Ax given in Problems 9 through 20. x' 1 = 9x 1 - 8x 2 , x' 2 = 6x 1 - 5x 2 Data in Problem 9 through 20 9. x = 5x14x2, x = 2x1-x2 x = 4x14x2...

Answered: 1 week ago

Question

★★★★★

An object $20 \mathrm{~mm}$ tall is placed $70 \mathrm{~mm}$ to the left of a converging lens that has a focal length of $100 \mathrm{~mm}$. (a) Draw a scale diagram showing the three principal...

Answered: 1 week ago

Question

★★★★★

A vertical centrifuge, operating at $100 \mathrm{rpm}$, contains an aqueous suspension of solid particles with $S G=1.3$ and radius of $1 \mathrm{~mm}$. When the particles are $10 \mathrm{~cm}$ from...

Answered: 1 week ago

Question

★★★★★

The rallying cry of Donald Trump in the US presidential election in 2016 was to Make America Great Again and to focus on policies that protected and boosted US jobs and US workers. On election, Mr...

Answered: 1 week ago

Question

★★★★★

Compute the variance and the ACF (lag-1 to lag-4) of the following ARMA models with $\operatorname{Var}\left(a_{t} ight)=1$ : (a) $z_{t}=0.7 z_{t-1}+a_{t}$; (b) $z_{t}=0.4 a_{t-1}+a_{t}$; (c)...

Answered: 1 week ago

Question

★★★★★

identify and define industry-standard communication design tools and their uses in the creative domains.

Answered: 1 week ago

Question

★★★★★

19. What effect do you want to have on them? (what feelings should they have)

Answered: 1 week ago

Question

★★★★★

11. What is their background in relationship to the topic. (what they have experienced so far)

Answered: 1 week ago

Previous Question Next Question