If an object of mass 10 kg is lifted in 10 mins and 15 s using a motor of 1000 Watt, then what is the amount of wasted energy? What is its efficiency? ps- Efficiency = (amount of work-energy wasted) /energy given
Work(W) = force(F) * distance(s)

Picture a all traveling at a constant speed around the inside of a circular structure. is the ball accelerating? explain your answer

Alinearly polarized electromagnetic wave has an average intensity of 196 w/m^2. this wave is directed towards two ideal polarizers (in real polarizers, transmission is also effected by reflection and absorption). polarizer a is oriented with its transmission axis at an angle of θ_1=20.8∘ with the incident electric field. polarizer b has its axis at an angle of θ_2=63.0∘ with the incident electric field. what is the average intensity of the wave after it passes through polarizer a? what is the average intensity of the wave after it passes through polarizer b? suppose that the two polarizers a and b are interchanged. what would the average intensity be after passing through both polarizers?

Hey student studies gravity using objects that have the same mass which two objects have the greatest gravitational force acting between them a. 100kg 1.0m 100kg b. 100kg 2.0m 100kg c. 100kg 2.0m 100kg big d. 100kg big 3.0m 100kg big