eternelle1182
11.04.2021 •
Physics
A 1.00 x 104 W electric motor is used to lift a
955 kg object vertically 25.0 m at a constant
velocity in 45.0 s. What is the efficiency of the
motor?
Solved
Show answers
More tips
- H Health and Medicine How to Whiten Teeth and Get the Perfect Smile...
- S Style and Beauty How to Properly Apply Eye Makeup: Tips from a Professional Makeup Artist...
- A Auto and Moto How Can Parking Sensors Help Drivers?...
- C Computers and Internet Make Money Online: Secrets and Essential Ways...
- A Auto and Moto What is the Average Lifespan of an Engine in a Car?...
- H Health and Medicine What You Need to Know About Nasal Congestion in Infants: Causes, Symptoms, and Treatment...
- S Science and Technology Discovering the Anatomy of an LCD TV Screen...
- F Food and Cooking How to Get Reconfirmation of Registration?...
- F Food and Cooking Why Doesn t the Confirmation Link Come to Email?...
- F Food and Cooking Deflope: What is it and how does it work?...
Answers on questions: Physics
- P Physics Where would you place an object in front of a concave mirror (focal length 7.50 cm) so that the image is twice as far from the mirror as the object?...
- P Physics what is the velocity of a plane that traveled 5000 miles north followed by 10000 miles north in 20 miles?...
- H History QUAIS FORAM OS PRINCIPAIS FATORES POLÍTICOS E ECONÔMICOS QUE CORROBORARAM PARA O FIM DA REPUBLICA OLIQUARQUICA E O INICIO DA ERA VARGAS E QUAIS AS MEDIDAS FORAM ADOTADOS POR VARGAS...
- C Chemistry CHEMISTRY HELP?? The Haber Process combines nitrogen with hydrogen to produce ammonia. Ammonia is used in the production of fertilizer. The Haber Process has helped increase crop...
- C Chemistry Dilutions José added 0.2 Liter of water to 100 mL of 1 M HCI. What is the concentration of the diluted solution?...
- M Mathematics Perform the indicated operation.‼️‼️...
- M Mathematics What is dtajcdfxgfcjzdg...
- C Chemistry What is the density of an object that has a mass of 350 g and a volume of 95 cm?? Would this object float in water?...
- M Mathematics Which of the following represents the multiplicative inverse of -90? A. - (- 90) B. C. 90 D. -90...
- B Biology How many genes to monohybrids compare? 2 3 1 4...
Ответ:
52%
Explanation:
1W = 1 J/s
motor input is 10000 J/s
Potential energy change
PE = 955(9.81)(25.0) = 234,213.75
power needed to change the PE in that time
P = 234,213.75/ 45 = 5,204.75 Watts
motor is 5204.75 / 10000 = 0.520475 or 52% efficient
Ответ:
wait... what? all I see is a jumble of numbers and letters