While waiting for the bus you take a seat on the metal bench at the bus stop. The bench feels very cold to you. Why? A. The warmth in your hands is being transferred to the bench via conduction
OB. The warmth in your hands is being transferred to the bench via convection
OC. The coldness of the bench is being transferred to your hands via convection
OD. The coldness of the bench is being transferred to your hands via conduction

Consider an ordinary, helium-filled party balloon with a volume of 2.2 ft3. the lifting force on the balloon due to the outside air is the net resultant of the pressure distribution exerted on the exterior surface of the balloon. using this fact, we can derive archimedes’ principle, namely that the upward force on the balloon is equal to the weight of the air displaced by the balloon. assuming that the balloon is at sea level, where the air density is 0.002377 slug/ft3, calculate the maximum weight that can be lifted by the balloon. note: the molecular weight of air is 28.8 and that of helium is 4.

Which is not one of the major climate zones? question 3 options: rain forest polar tropical temperate

Which of the following is the phase that results when the moon is on the opposite side of the earth from the sun? a. quarter moon b. crescent moon c. new moon d. full moon