Calculate the de Broglie wavelengths of the following objects and discuss the relevance of quantum mechanics in describing their behaviour: (b). a 1.5 kg football travelling at 40 km/hr,
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- An object at an initial temperature of 27 degrees C is raised to a temperature of 877 degrees C. How much more energy does the object emit as blackbody radiation at the higher temperature compared to the lower temperature? a. 32.5 b. 215.9 c. 864.5 d. 1,113,1232/3 2/3 1/2 1/2 1/2 According to the plots choose the appropriate indices from below: A. [120] B. [001] C. [10] D. [112] E. [301] F. (111] G. H. [012 1. (230) J. (233) K. (131) L (135) M. (300) N. (100) O. (111) P. (010) What is the Direction of OA?3. The amount of space that is occupied by an object. 8. The measure of hotness or coldness of an object. 12. A constant, a variable, or a product or a quotient of I. CROSS-WORD PUZZLE. Identify the term/s related to measurements and algebraic expressions. Write the answer to its corresponding box. IM 12 3. 6. 4 6 8 15 13 11 9. 14 10 ACROSS DOWN 1 Comes from the Latin word "mensura" and from a 2. The amount of liquid or solid a container can hold when it is full. 4. The basic unit for capacity. 5. The period during which an action or event Greek word "metron". 6. The basic unit of mass. occurs. 11. Letters to represent any numbers. 7. The basic unit of length in the metric system. 9. Used to measure temperature. 10. A measure of earth's gravitational pull. 13. Polynomial with one term. 14. Polynomial with three terms. 16. The meaning of the symbol "-". constants and variables. 15. The meaning of the symbol "4 ATCHING TYR EASURE
- 1. Calculate the Coulomb force between an electron and a proton which are separated by 5.3 x 10-1lmA high school student visits the local electronics store to purchase supplies for her science project. The student finds what she needs and stacks her planned purchases on the check-out counter. Her stack of purchases consists of a 400 gram robotics kit, a 300 gram multi-meter, and a 200 gram soldering tool, as shown in the figure below. The entire system is at rest - and remains at rest. SOLDERING TOOL 200 grams MULTI-METER 300 grams ROBOTICS KIT 400 grams Check-out Counter 15. The soldering tool has a weight of A. 1960 N. В. 200 N. С. 2.00 N. D. 200 kg. E. 1.96 N. 16. The multi-meter pushes down on the robotics kit with a force having magnitude A. 2.94 N. B. 2940 N. С. 29.4 N. D. 4.90 N. E. 500 kg. 17. The robotics kit pushes down on the check-out counter with a force having magnitude A. 8.82 N. B. 400 N. C. 3.92 N. D. 900 kg. E. 8820 N.