roseclemmings503 roseclemmings503

20-12-2022
Physics

contestada

A dockhand rolls a barrel up a plank 6.40 m long. the barrel weighs 425 n and is displaced a height of 1.28 m. the dockhand exerts a constant force of 95.0 n parallel to the plank. a. what work is needed to overcome friction? (64.0 j) b. what is the efficiency of the person?

Respuesta :

Otras preguntas

What is the difference between a storyboard and a comic strip?

reacts most vigorously with water a. Alkali metal b. Alkaline earth metal c. Transition metal d. Halogen e. Noble gas

Which formula represents a compound whose molecules are tetrahedral? (A) BH₃ (B) C₂H₂ (C) CH₄ (D) H₂O (E) C₂H6₆

effects of the nationwide rail network on the United States?

You are scheduling a new delivery route and you need to find out how long it will take a driver to complete the route. You start the route at 9:50 A.M. and fin

Help me solve this question plz

What is necessary to convict someone of treason?

5/12+2/9+1/6 adding fractions

156 inches = how many yards and how many feet

Tram leaves Piccadilly to Eccles every 9 minutes and to didsbury every 12 minutes. A tram to Eccles and a tram to didsbury both leave Piccadilly at 9am. At what