Physics

Mashed Potatoes hold for __ hour(s) Type your answer here

A cold transmitted by a facial tissue is an example of direct contact. droplet transmission. fomite. vector. vehicle transmission.

Geraint Thomas of Great Britain won the 2018 Tour de France. Suppose he had 140Nm of torque about the crankshaft of his bike after applying a force of 800N vertically.What is the length of Geraint's crankshaft on his racing bike? 2.52mm 112,000mm 175mm 5.71mm

Which flow tube length had the greatest flow rate? A 10 mm B 20 mm C 30 mm D 40 mm E All flow tube lengths had the same flow rate.

What is the diameter of the Sun [in units of Km] according to your measured (d)/(h) HINT: The distance to the sun is 1.5times 10^8Km NOTE: To use scientific notation in numerical answers you can use the following, enter 1e5 for 1times 10^5 this works as in computers ex=times 10^x As an example to enter 5000=5times 10^3 you would type 5e3 square

Which best describes what forms in nuclear fusion? two smaller,more stable nuclei two larger,less stable nuclei one smaller,less stable nucleus one larger ,more stable nucleus

Part 1-True/False (20% ) Write "True" if the Statement is correct or "False" if it is incorrect on the separate answer sheet 1. A machine can change one form of energy in to another form of energy 2. A lever multiply force and energy at the same time. 3. When the load is greater than the effort, it is said to be force multiplier. 4. Actual mechanical advantage is formed if there is no waste of energy because of friction. 5. If the mechanical advantage is greater than one the machine is a force mu 6. Spring is a type of simple machine. 7. Fishing pole is an example of third class lever. 8. Inclined plane is used to multiply speed. 9. A machine produces an output force of (1)/(2) times the input force The machine is said to be force multiplier. 10. The velocity ratio of single fixed pulley is 2. Part II:- Multiple choices (56% ) Choose the correct answer from the given alternatives and write the letter of your choice on the separate answer sheet. 11. A cold steel spoon is dipped in a cup of hot milk. It transfers heat to its other end by the processes of A. radiation C. convection B. absorption D. conduction 12. What is the quantity of heat energy required to heat a 10kg block of copper from 300 K 340 K? ( use specific heat capacity of copper=420J/kgK A. 168 KJ C. 168 J B. 125 KJ D. 125J 13. Calculate the increase in length of a 40 cm brass rod that is heated from 30^circ C to 50^circ C (linear expansion of Brass is 1.9times 10^-5K^-1 A. 0.51 cm B.1.9 cm C. 0.015 cm D. 15.20 cm

36. What kind of interference occurs between two identical waves moving in opposite direction and the two waves are out of phase? A. Constructive C. Destructive B. Bothe constructive and destructive D. Impossible to determine 37. Imagine you are sitting in a room and someone is playing kirar outside and next to your room.You may be able to hear the sound of the kirar through the open door way,you cannot see kirarist. This is because of A. reflection C. diffraction B. interference D. refraction art III. Blank space( 6% ) 38. The reflection of sound is __ 39. The quantity of heat needed to raise the temperature of 1 Kg of a substance through 1C^0 or lK is __ 40. The energy that flow from high temperature to low temperature is __

When loading a small boat such as a canoe or kayak,how should most of the weight be placed? mostly in the bow balanced and low balanced and high mostly in the stern

Boyle's Law can be expressed as: t constant n and T:Valpha 1 P or PV=constant True False