Temperatura finală a unei bucăți de gheață, ce are inițial t1 = -10°C și masa m = 800 g, care primește căldura Q = 368,42 kJ este aproximativ: (Se cunosc ca = 4180 J/ kg·K, cg = 2090 J/ kg·K, λg = 335 kJ/kg).

Four objects are being tested to see how they are affected by fluid friction. object w has a surface area of 4.5 cm2, object x has a surface area of 2.5 cm2, object y has a surface area of 6.2 cm2, and object z has a surface area of 3 cm2. which object would experience the most fluid friction?

When you turn on a battery-operated device, an electrical circuit is

The slope of a velocity time graph over any interval of time gives the during that interval