✨Please help!! ✨. CONVECTION

please help! no spam answers!! Can somebody please help me and how do you do this step by step and I need the formula for this please. E = MV^2 2 + mgh, If M=20, h=15, E=4900, g=9.8. Find V VA (rod-shaped)B (spiral-shaped)C (spherical) The sun converts nuclear energy into what type of energy? simplify the expression 4x+2-1/2x The acceleration of an object is ____________________ related to the net force exerted upon it and _____________________ related to the mass of the object. Please help its already overdue 2(-4y-7)+3=11 solve for y An airplane on autopilot took 9 hours to travel 6,471 kilometers. What is the unit rate for kilometers per hour? 13. Town officials are putting a pathway around a pool as shown below.(4x+3)pool(2x-5) ftdecka) Determine the perimeter of the pool in terms of x. Write your answer in simple form andinclude units. Show or explain your work.b) Determine the area of the pool in terms of x. Write your answers as a trinomial and includeunits. Show or explain your work. AP Human GeographyWater run-off is likely to be greatest in which of the following settings?- Beachfront- Alpine terraces- Flat farmland- Forest preserve- City which of the following explains why the black peppered moth is decreasing in number a natural selection b evolution c extinction adaptation Assess to what extent Vladmir Lenin was significant to Russias change from a Tsarist regime to Communism banda ayudenme con este punto de una tarea es sobre la sustraccin de nmeros enteros19 - ( - 12 )- 6 - ( - 27 ) ( -18 ) - 4( - 82 ) - 918 - ( - 2 )( - 12 ) - ( - 11 )LA RESPUESTA YA LA SE LO Q NECESITO ES EL PROCEDIMIENTO!! gracias :3 Triangle D E F is shown. Angle D E F is a right angle. The length of hypotenuse DF is 13, the length of E F is 5, and the length of E D is 12.What is the length of the side opposite D? unitssin(D) = Help - Im failing math and I might get held back so please just help Explain how scientist might use a Dichotomas key/chartPLEASE DONT SOMETIHNG RANDOM I WILL REPORT IF YOU DO Qu es la ciencia? Qu importancia tiene la ciencia para el desarrollo de la humanidad y de la vida? AYUDA PORFAAAAAAAA BRAINLIEST!!How do deeep ocean currents form?