Superheated steam at 120°c is guided into a well-insulated beaker (made of 100 g of aluminum containing 150g of water and 50 g of ice at 0 °c). the final total mass of the system (including the steam) is 335 g. determine (a) the final temperature of the system (b) the change of entropy of the system caf 0.22 cal/goc, cwater 1.0 cal/g0c, csteam=0.48 cal/g0c, lgteam=539 cal/g ms lv 373 ms cs /n 393 mscin 346 373 ssteam b) 313 +30x0o.075 373 30xo.48(-0.0), 3dx37 541 a/k asho rtoxi0x (0.34) = 354 k 73 machon346 73 mielf a sie sox19 273 soxl.00.24) = a6 3/k mai cai/n 346 273 looxd.22(0.34) = 528 (a/ calk 13

note: the given question is incomplete.

complete question is given below.

which is an example of kinetic energy?

a. the energy stored in ethanol  

b. a hockey puck sliding across the ice  

c. a compressed spring  

d. a ball sitting at the top of a ramp

solution: the kinetic energy is the energy posses by the virtue of the motion of the object.

in the given options, a, c and d are the example of potential energy because it is the energy posses by the virtue of the rest of the object. but option b has the kinetic energy as the object is in motion.

hence, a hockey puck sliding across the ice   is the apex example of kinetic energy.

so, the option (b) a hockey puck sliding across the ice   is the correct option.

find the surface area of the sphere to the nearest square unit. use a calculator.

a. 254 in.2

b. 64 in.2

c. 127 in.2

d. 1,018 in.2

the answer is the first electromagnet (a). this is because it has more coils around the ferromagnetic material. increasing the number of coils increases the surface area in which the metal interacts with the current in the coil. this enables more atoms in the metal to become aligned hence becoming more magnetized.