University Physics

Part II: Filling the blanks ( 30+). 1. The reading of the vernier Caliper is mm. 2. If the standard length of the object to be measured is 2.36444cm. If it is measured by a meter ruler with division of 1mm, its value should be mm; if it is measured by a vernier caliper with a precision of 0.002cm, its value should be mm; if it is measured with a screw micrometer with a precision of 0.01mm, the value should be mm. 3. The period of a simple pendulum of length l is T. The gravitational acceleration is 4. The most basic data processing methods are as follows: and 5. In the measurement of Young's Modulus of metal wire, in order to eliminate the systematic error caused by elastic hysteresis, measurement was carried out to eliminate the effect of hysteresis. 6. The Einstein's photoelectric equation is Part III: Calculation (40'). 1. Consider direct measurement of the diameter of a plate D by using a reading microscope, which is measured 3 times, the readings are 8.437mm,8.433mm, 8.435mm. Questions: (a) The A-type uncertainty uA of D. (b) The B-type uncertainty uB of D ? (c) The combined uncertainty uc of D and the area of the plate A. (20') 2. If we use Michelson interferometer to measure the wavelength of sodium light. Slowly move the micro-handwheel to move M1 so as to change d and make the center of each generates or swallows 50 stripes. The values of d is in the sheet below. Please use the successive differential method to deal with data, and calculate the wavelength