Какое количество теплоты Q потребуется для обращения в воду льда массой 100 г, взятого при 0 °С и превращении всей воды в пар? Удельная теплота плавления льда λл = 3,4⋅105 Дж/кг, удельная теплота преобразования воды L = 2,3⋅106 Дж/кг. Удельная теплоёмкость воды c = 4200 Дж/(кг∙°С).

Aplanet of mass m 6.75 x 1024 kg is orbiting in a circular path a star of mass m 2.75 x 1029 kg. the radius of the orbit is r 8.05 x107 km. what is the orbital period (in earth days) of the planet tplanet?

Choose the most likely outcome of this scenario: jen decided to go bike riding without a helmet. while no one is around during her ride, she is thrown from her bike when her wheel goes into a pothole. she is not injured, but she is terrified to get back on her bike. what happens next? a. her physical health is affected even though she wasn't hurt. b. her mental and emotional health are affected because she is afraid to get back on her bike. c. her social health is affected because she is worried her friends saw the fall. d. her overall health is not affected at all by her fall.

What is the average speed of a car that travels 40 mph for 1 hour and 60 mph in another hour?