Problems 2-A 900W microwave generator in an oven generates energy quanta of frequency 2560 MHz (a) How many energy quanta does it erit per second? (b) How many energy quanta must be
absorbed by a pasta desh placed in the radiation cavity to increase its temperature by 45K? Assume
that the dish has a mass of 0.5kg and that its specific heat is 0.9 kcal/kg. K. (c) Assume that all energy
quanta emitted by the generator are absorbed by the pasta dish. How long must we wait until the
dish is (b) is ready?

Which is not true about oxygen-17 and oxygen-18?

Charge is distributed along the entire x-axis with uniform density λ. how much work does the electric field of this charge distribution do on an electron that moves along the y-axis from y = a to y = b? (use the following as necessary: a, b, ε0, λ, and q for the charge on an electron.)

3. a worker pushes a 30.5 kg polished stone along a polished table with a force on bonin a straight line for 5.20 s after starting from rest. there is no friction between thestone and the table. at the end of the table. the stone is hooked to a cable with a lengthof 62.0 cm to rotate it to a rough table to store until they can be picked up. the roughtable has a coefficient of static friction 0.702 with the polished stone. remember that 8= 9.80 m/s2a) what is the speed of the stone when it is hooked to the cable? b) what is the tension in the cable while the stone is rotating? (there is still nofriction)c) how much force is needed to make the stone begin sliding from rest on therough table? ius = 0.70262.0 cm30.5 kg20.5 kg6= 0