Visible light corresponds roughly to the range of wavelengths from 400 nm (violet) to 700 nm (red). 1 nm = 1 nanometer = 10-9 m. What is the frequency of visible light at a wavelength of 600 nm? f = Enter your answer above using scientific notation with the format x.yzEq = x.yz x109. For example, 1.23 x 10-9 is entered as 1.23E-9. What is the wavelength of a visible light wave with a frequency of 4.64 x 10¹4 Hz? λ = Hz nm
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- 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 sameWe have four Maxwell's Equations in the following. V•D= p, A. VxE=- С. VxH =J+ D. B V•B =0 at Q1.1. Which equation tells electric charges are the sources of an electric field? Q1.2. Which equation tells how commercial electric power is generated? Q1.3. Whic equation shows the main contribution of Maxwell? Q1.4. Which equation tells that a current can generate a magnetic field? Q1.5. Which equation tells that no magnetic charges exist?A light-year (ly) is the distance light travels in one year (at speed of 2.998 ×× 108 m/sm/s ). An astronomical unit (AU) is the average distance from the Sun to Earth, 1.50 ×× 108 kmkm.1 yearyear = 3.156 ×× 107 ss. a. How many meters are there in 6.50 lyly ? Express your answer using three significant figures. b. How many AUAU are there in 6.50 lyly light-year? Express your answer using three significant figures.
- e2f_h. g= 4 e =7.83±0.04 f =0.204±0.007. h=14.14+0.05 and i=3.99±0.03- Given the equation where What is the absolute uncertainty in g? Select one: 1.35+0.02 a. O b. 1.4±0.1 Oc. 1.4+0.2 O d. 1.35±0.01A 11-inch candle is lit and burns at a constant rate of 1.3 inches per hour. Let t represent the number of hours since the candle was lit, and suppose R is a function such that R(t) represents the remaining length of the candle (in inches) t hours after it was lit. a. Write a function formula for R in terms of t. R(t)=11-1.3t Preview b. What is the domain of R relative to this context? Enter your answer as an interval. [0,8.46] Preview c. What is the range of R relative to this context? Enter your answer as an interval. Preview no answer given d. What is the domain of R¯ relative to this context? Enter your answer as an interval. |其 Preview e. What is the range of R1 relative to this context? Enter your answer as an interval. Preview f. Solve R(t) = 6.2 for t. t = 3.69 Preview g. What does your solution in part (f) represent in this context? Select all that apply. How many hours since the candle was lit when it is 6.2 inches long. * The length of the candle (in inches) 6.2 hours after…Which of the following equations correctly defines root mean square speed? Select one or more: O A. A. Urms = C4 So U²e 2 du mar B. Urma= CAT ve du □ C. □ m Urms= C4 ve T du D. Urmis □ E. Urms = m √CAT ve duv m = C4 √ve KT du
- 1%A9 li. t LTET 4G+ Vol) O A X O U 9:-7 Second H.W.pdf 1. Draw and label the vector with these components. Then determine the magnitude and angle of the vector. a- Az = 3 ,A, = -2 b- B, = -2 ,B, = 2 2. What is the speed of horse in meter per second that runs a distance of 1.2 miles in 2.4 minutes? 3. A car moving along X- axis according on the function: X (t) = 2 t2 + 5t +7 on [1,2] Find: a- The average velocity. b- The acceleration at 3s. 4. Julie is walking around a track at a 2m/s for some exercise. She then decides to start jogging so she accelerates at a rate of 0.5m/s? for 3 seconds. How far did Julie travel from the time she started to accelerate to the end of the 3 seconds? 5. Ralph uses a 2000 to do this. force to push his car along a road for 1000 m. It takes him500 s a- Calculate the amount of work that Ralph did on the car. b- Calculate the amount of power that he generated. IItrue or false. I- The speed of light in vacuum is a universal constant, whose value (without uncertainty, as it is defined as a standard) is c=299792458 m.s -1..The value of c in scientific notation is 2.99792458 x108 m.s-1. II- The value of c (velocity of light in vacuum) written to 3 significant figures is 3.00 x 108 .m.s-1. III- The value of the density of an object obtained was ρ±uρ=(7.768581114 ± 0.012540242) g.cm -3. The value obtained for the density and its respective uncertainty is incorrect, as it makes no sense to report the uncertainty with so many decimal places. IV- To convert g/cm 3 to kg/m 3 just multiply by 10 3.Imagine that in the measurement of 4.6 cm long metallic cylinder, your measurements in centimeters are (3.0, 3.5, 4.0, 4.5, 5.0, 5.5,6.0). What is the standard error of your length measurement. O 1.08 O 0.022 O 0.22 O 0.41 O2.22
- 1. Below are the given measurements. Convert it as indicated. (a) 365 days into min (b) 94.3 MHz into kHz (c) 450 cm² into km² (d) 72 nm into mm (e) 130 mi/h into km/s (f) 40.0 L to uL (g) 5 µl to mLA maser is a laser-type device that produces electromagnetic waves with frequencies in the microwave and radio-wave bands of the Part B electromagnetic spectrum. You can use the radio waves generated by a hydrogen maser as a standard of frequency. The frequency of these waves is 1,420,405,751.786 hertz. (A hertz is another name for one cycle per second.) A clock controlled by a hydrogen maser is off by only 1 s in 100,000 years. (The large number of significant figures given for the frequency simply illustrates the remarkable accuracy to which it has been measured.) How many cycles occur in 1.4 h? ? N = cyclesThe intensity of light (in foot-candles) varies inversely as the square of x the distance in feet from the light source. The intensity of light 2 feet from the source is 80-foot candles. It is to determine how far away is the source if the intensity of light is 5 foot-candles. 1. Determine the proportionality constant k, in ft^3 2. How far away is the source if the intensity of light is 5 footcandles? (in ft)