Một cano rời bến chuyển dộng thẳng đều. Thoạt tiên, cano chạy theo hướng Nam – Bắc trong thời gian 2 phút 40 giây rồi tức thì rẽ sang hướng Đông – Tây và chạy thêm 2 phút với vận
tốc như trước và dừng lại. Khoảng cách từ nơi xuất phát đến nơi dừng là 1 km.
Tính vận tốc của cano.

You are traveling in a car going at a constant speed of 100km/h down a long, straight highway. you pass another car going in the same direction which is traveling at a constant speed of 80km/h. as measured from your car's reference frame this other car is traveling at −20km/h. what is the acceleration of your car as measured from the other car's reference frame? what is the acceleration of the other car as measured from your car's reference frame?

Which is the best predictor of the radioactive nature of an isotope? o the proton-to-electron ratio the neutron-to-proton ratio o the neutron-to-electron ratio the electron-to-proton ratio

Refrigerant-134a flows through a carnot heat pump cycle at 0.5 kg/s. it is known that the maximum absolute temperature in the cycle is 1.1 times the minimum absolute temperature, and the net power input to the cycle is 2.5 kw. if the refrigerant changes from a saturated vapor to a saturated liquid during the heat rejection process, determine the maximum magnitude of the enthalpy of vaporization for this process in kj/kg (with 3 significant figures).