30 points and explain how to find the kinetic and potential energy a 2-kg ball rolls at 2 m/s along a table that is 1 meter off the ground. how much mechanical energy does the ball have?

19.6 j

4 j

15.6 j

23.6 j

⭐Hey User

⭐Since here the Energy can be calculated as ..

↪KINETIC ENERGY = 1/2 *M * V^2

↪here M = mass of the body and V = its velocity..

↪thus K.E. = 1/2 *(2)*(2)^2 = (4) = 4 joules

↪POTENTIAL ENERGY = Mgh

↪here M = mass of the body , g = Accelation due to the gravity and h = height from the ground ..

↪thus P.E. = (2) * (9.8)*(1)= 19.6

↪P.E. = 19.6 joules ..

↪thus we know that MECHANICAL ENERGY = POTENTIAL ENERGY + KINETIC ENERGY

↪THUS MECHANICAL ENERGY = 19.6 + 4 = 23.6 J

〽⭐therfore the M.E possed = 23.6 J

most voltage drop calculators want the distance between the source and destination. then internally, they double it so both the source and return wires are calculated. but you need to know which distance the calculator uses so you're not half of what you should be or double what you should be.

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in your related post, you didn't say what type of load this is. if it is a light or heater, voltage drop won't be a big issue. if this is a motor, the current needs are huge at startup and the voltage drop can pose a problem. if this is a motor, knowing if the motor is under much load during startup will answer the voltage drop effect (a saw is easier to start than a compressor).

statement #3 on andre"s list is false.