Juan inflates a balloon and then releases its end to let the balloon go free as air comes out. the balloon then flies around the room. which statement describes how this example is an application of newton’s laws of motion? according to newton’s first law of motion, the balloon continues moving until the forces on it are balanced. according to newton’s third law of motion, the balloon is pushed forward as the air is forced out. according to newton’s third law of motion, the balloon resists any change of motion unless an unbalanced force acts upon it. according to newton’s second law of motion, the balloon exerts a force on the air, which exerts a force back on the balloon.

How does the image distance (di) of a convex lens compare with the image distance of a concave lens? a. the image distance of the convex lens is positive, and that of the concave lens is negative. b. both are negative for a virtual image. c. both are positive for a virtual image d. the image distance of the convex lens is negative, and that of the concave lens is positive.

Under conditions for which the same room temperature is maintained by a heating or cooling system, it is not uncommon for a person to feel chilled in the winter but comfortable in the summer. provide a plausible explanation for this situation (with supporting calculations) by considering a room whose air temperature is maintained at 20â°c throughout the year, while the walls of the room are nominally at 27â°c and 14â°c in the summer and winter, respectively. the exposed surface of a person in the room may be assumed to be at a temperature of 32â°c throughout the year and to have an emissivity of 0.90. the coefficient associated with heat transfer by natural convection between the person and the room air is approximately 2 w/m2 â‹…â‹… k. what is the ratio of the thermal resistance due to convection to the thermal resistance due to radiation in the summer? what is the ratio of thermal resistances in the winter

Which statement correctly describes the relationship between frequency and wavelength?