4. Write in scientific notation. (a) Speed of light in a vacuum = 298 000 000km/s (b) One light year = 10 000 000 000 000km Learning Activity 3: Problem Solving Directions: Identify the given quantities and solve for the unknown quantities. BOX the final answer. Do it in your notebook. 1. The temperature of a windshield on a winter morning is 10°F. If the melting point is 0°C, how many degrees must the temperature of the windshield be raised before the ice can melt?
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- Astronomers use a light-year to measure distance. A light-year is the distance light travels in one year. The speed of light is approximately 300,000 km/sec.a. How long is 1 light-year in kilometers?b. The nearest star (other than the sun) is Alpha Centauri. It is 4.34 light-years from Earth. How far is that in kilometers?c. How long will it take a rocket traveling 42,000 km/hr to reach Alpha Centauri?I. MULTIPLE CHOICE. Read the following items carefully. Write the letter of the BEST answer on the space provided before each number. Use CAPITAL letters. _1. Televisions (TV) are a common appliance in many households. The frequency of the TV is on the order of 108 Hz. The wavelengths of the TV are on the order of which of the following? A. kilometers B. meters C. centimeters D. micrometers 2. The wavelength of the radio with a frequency of 104 Hz is on the order of which of the following: A. kilometers B. meters C. centimeters D. micrometers 3. Speed of sound in air is a function of which of the following? A. wavelength B. frequency C. temperature D. amplitude 4. The unit of sound intensity level is: C. watts A. decibels B. hertz D. m/s 5. A Volkswagen car is approaching a stationary student. For the student, the apparent frequency of the horn in comparison to the actual frequency of the horn: A. decreases C. resonates B. increases E. increases or decreases D. stays the sameIlluminance is a measurement of how much light is incident on a surface. It varies with the square of the distance of the object from the light source. Illuminance (lx)- amount of light falling on 1 m^2 area Please answer numbers 1 and 2 1. Compute for the illuminance in your room. 2. Search for the ideal illuminance in the areas of the house (living area) and give area in your house that needs more light. Kindly give explanation how'd you come up with your answer.
- One million seconds equals hoX courses/107664/assignments/2898276 er Hand. Introduction to Cri.. MDX F Attempt, Conspira.. S Skype | Communi... E CB Practice Test -.. on-2021.pdf Page 1 > of 4 O. 0.0025 kg mg d. 3.4 cm7 WK- ryr Make sure you know the tables for bases units, prefixes, and conversions. 7. What is the difference between being accurate and being precise? 8. Calculate the number of seconds in one year (365 days) (express your answer in scientific notation) (3.15 x 10' s) Show dimensional analysis. 9. One million seconds equals how many days? (11.57 days) Show dimensional analysis. 10. What is the speed of a car in m/s that is traveling at 60 km/hour? (16.67 m/s) analysis. Show dimensional 11. What is the velocity of Molly (a dog) who runs 4 blocks chasing a cat in 15 seconds, then stops for 30 seconds because the cat has climbed a tree. She then sees a squirrel and takes off running for 20 blocks for 10 seconds. (Hint: draw a picture 12. Calculate the slope of the line, if…Hubble’s Field of View. Large telescopes often have small fields of view. For example, the Hubble Space Telescope’s (HST’s) advanced camera has a field of view that is roughly square and about 0.06° on a side. a. Calculate the angular area of the HST’s field of view in square degrees. b. The angular area of the entire sky is about 41,250 square degrees. How many pictures would the HST have to take with its camera to obtain a complete picture of the entire sky?MasteringPhysics: HW3 M (no subject) - sadik1261@gma x b Answered: A jet pilot takes his X P Course Home Me. session.masteringphysics.com/myct/itemView?offset%3Dnext&assignmentProblemID=134309485 Apps (1) P4... YouTube to MP3 Co... phone cover for mo... AGARWAL-PHY-166 KHW3 Item 3 A 15.0 kg bucket is lowered vertically by a rope in which there is 186 N of tension at a given instant. Part A Determine the magnitude of the acceleration of the bucket. Express your answer to two significant figures and include the ap HA Value Urirs Submit Bequest Answer Part B II
- QUESTION 3 Use the fact that the speed of light in a vacuum is about 3.00 x 108 m/s to determine how many kilometers (km) a pulse from a laser beam travels in 2.2 hours. Answer in units of km and round to two decimal places. Tip: Scientific/exponential notation such as $.4×10 -4 should be entered as 5.4e-4 or 5.4E-4 with NO space.please donot copy. i will give upvotes. Don't use Chat GPT otherwise i will give you lots of dislikes . Needs Complete typed solution with complete explanation and 100 % accuracy.The speed of light is 2.998*10^8 m/s. How far does light travel in 7.0 μs ? Set the math up. But don't do any of it. Just leave your answer as a math expression. Also, be sure your answer includes all the correct unit symbols.
- A bat flying at 5.00 m/s is chasing an insect flying in the same direction. The bat emits a 40.0 kHz chirp and receives back an echo at 40.4 kHz. Assume the speed of sound is 343 m/s. 1. What is the equation for doppler shift? 2. If you were calculating the frequency of the chirp observed by the insect, what would the value of fs be? 3. For question 2, would vo represent the velocity of the bat or the insect? Does the motion of the insect increase or decrease the frequency observed by the insect? Would vo be positive or negative? 4. For question 2, would vs represent the velocity of the bat or the insect? Would vs be positive or negative? 5. Write the doppler shift equation to find the frequency of the chirp observed by the insect. Use fi for the frequency observed by the insect and vi for the velocity of the insect. (Do not solve this equation yet.) 6. If you were calculating the frequency of the chirp observed by the bat, what would the value of f0 be? 7. For question 6, what would…Document1 - Microsoft Word (Product Activation Failed) File Home Insert Page Layout References Mailings Review View a ? W % Cut - A A A Find - Aal Calibri (Body) - 11 Aa AaBbCcDc AaBbCcDc AaBbC AaBbCc AaB AaBbCcL E Copy ae Replace Paste B I U U - abe x, x² A ab A I Normal I No Spaci. Heading 1 Change . Heading 2 Title Subtitle Format Painter Styles - Select - Clipboard Font Paragraph Styles Editing L • 2. 1:. I' 2: 1 : 3:1 • 4.I 5.1' 6.1'7 I'8: 1 9 ' 10.L· 11: 1 ' 12.'13 · L 14: 1· 15.1A L'17:1 18 STATISTICAL AND THERMAL PHYSICS PLEASE HELP ANSWER ALL QUESTIONS (a) Describe some of the simple thermometers with which you are familiar. (b) On what physical principles do these thermometers operate? (c) What requirements must a thermometer have to be useful? all 02:38 PM 2022-04-27 Page: 1 of 1 国 昆言 E E E E +) Words: 9 100% -L Exam #2 - Requires Respondus L X A Chpt 6/7/8 Homework - SCIE 101 X b My Questions | bartleby G How do you screenshot on a HP + X i webassign.net/web/Student/Assignment-Responses/submit?dep=26100687&tags=autosave#Q9 9. [-/2 Points] DETAILS SHIPPS14 6.SA.013. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER Consider the figure below. I= 1 m r=2 m T= 3 m Indicate over how many squares the sound waves would spread for r = 7 m. squares The sound intensity would decrease to what fraction in value? Need Help? Read It Submit Answer 10. [2/2 Points] DETAILS VIOUS ANSWERS SHIPPS14 6.SA.020. MY NOTES ASK YOUR TEACHER Under what circumstances would sound have the following? Study Questions for..rtf Show all 9:56 PM O Type here to search 后 ) 4/29/2021 ..