10.

A spring is hanging down from the ceiling, and an object of mass m is attached to the free end. The object is pulled down, thereby stretching the spring, and then released. The object oscillates up and down, and the time T required for one complete up-and-down oscillation is given by the equation 7 = 2x\\m/k, where k is known as the spring constant. What must be the dimension of k for this equation to be dimensionally correct? O [T] O [T]2 O [M] O [M)IT] O [TYM] O [MVIT] O [T]2/[M]In the equation y = c"ar you wish to determine the integer value (1, 2, etc.) of the exponent n. The dimensions of y, a, and t are known. It is also known that c has no dimensions. Can dimensional analysis be used to determine n? O Yes O NoComplete the following statement: Today, the standard meter is defined in terms of O the wavelength of light emitted from a krypton atom. O the speed of light. O the distance from the earth's equator to the north pole. O the wavelength of light emitted from a sodium atom. O a platinum-iridium bar kept in France