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
Select the true statements. The distance across a galaxy group is usually a few hundred thousand light-years. Stars cluster together to form galaxy groups. Galaxy groups typically contain several hundred galaxies. Galaxy groups are mostly composed of empty space.
The variable you change on purpose in an experiment is called the independent variable . It is what you are testing to see how it affects the result. In this activity., what was that variable? The height you dropped the ball from The bounce height the ball reached The kind of graph you made C The number of times you collected data
The portion of the larger electromagnetic spectrum that humans can see is known as the __ visible spectrum Infrared spectrum microwave spectrum vestibular spectrum
Problem 17 A tiger leaps horizontally from a 7.5-m-high rock with a speed of $3.0m/sec$ How far from the base of the rock will she land?
How are work and energy related? (Read the procedure section carefully). A Energy is the ability to do work, and work is the mean by which energy changes from one form to another. B Energy is work multiplied by time, and work is equal to power. C Energy is the ability to do work, and work is energy divided by time. D Energy is the ability to do work, and work is power divided by energy. E Energy is the ability to do work, and work is energy multiplied by time.
In 2009, an earthquake hit Costa Rica, registering a 6.1 on the Richter scale. What was the intensity of this earthquake, assuming the reference value was 1? $(R=log(\frac {I}{I}_{0}))$ A. 5.1 B. $4.46\times 10^{2}$ C. $1.26\times 10^{5}$ D. $1.26\times 10^{6}$
16) Classify as scalar or vector. magnitude plus direction vector neither scalar
4. NASA wants to measure X-Rays but only have equipment that can measure Gamma Rays. Lesson NASA has to develop a new piece of equipment that detects difference wavelengths. Does NASA have to develop a new piece of equipment that detects longer or shorter wavelengths? Explain. __ 5. What is the order of electromagnetic waves from shortest wavelength to longest? __ 6. What is the order of electromagnetic waves from highest frequency to lowest frequency? __ 7. The sun produces all of these rays. Why do you think that not all of these rays are not hitting earth's surface? Explain your answer. __
3. What is the difference between a law about gravity and a theory about gravity?(14 Points) A law says objects fall, while a theory of gravity explains the pull between masses A theory of gravity is less scientific than a law of gravity A theory about gravity is just a guess, while a law is proven forever A law describes what gravity does , while a theory ex- plains why gravity works
1. Describe an example of something with high density and something with low density.
