A physicist at a fireworks display times the lag between seeing an explosion and hearing its sound, and finds it to be 0.600 s. (Enter your answers to at least four decimal places. Use the following relationship between Kelvin and Celsius: T(K) = T(°C) + 273.15.) (a) How far away (in m) is the explosion if air temperature is 24.0°C and if you neglect the time taken for light 207.3289 x m (b) Calculate the distance to the explosion (in m) taking the speed of light into account. Note that this distance 207.3292 m reach the physicist? negligibly greater.

A traveling wave packet is described by the function y(x, t) = 0.35€ 0.1(x−3.501)², where distance is measured in meters and time in seconds. What is the speed of this wave? i m/s

A concave mirror has a focal length of 15 cm. What is the magnification if the object's distance is 105 cm?A healthy person has a body temperature of 98.6 oF. Use the properties of blackbody radiation to work out the precise wavelength of the peak radiation. (Hint: Convert Fahrenheit degrees into Kelvin (absolute) degrees.)

The compound eyes of bees and other in- sects are highly sensitive to light in the ultra- violet portion of the spectrum, particularly light with frequencies between 7.5 × 10¹4 Hz and 1.0 x 10¹5 Hz. The speed of light is 3 × 108 m/s. What is the largest wavelength to which these frequencies correspond? Answer in units of m. What is the smallest wavelength? Answer in units of m.

Humans are unable to convert radiant energy from the sun into stored energy that can be usedto do work. Plants, however, obtain their energy from photosynthesis – sunlight is used toconvert carbon dioxide and water into sugars (stored as an energy source) and oxygen.Consider a leaf with a surface area of 2.5 cm2. On a sunny day it might receive sunlight withan average power per unit area of 350 W/m2. Of this incident light, only about 40% is usefulfor photosynthesis. (a) If the process was perfectly efficient (i.e. all the useful radiation was converted tostored internal energy), calculate the increase in internal energy of the leaf in aperiod of one hour. (b) In practice, the overall efficiency of the process (percentage of energy storedrelative to the total incident energy reaching the surface of the leaf) is only about6%. Discuss, in relation to the First Law of Thermodynamics, what happens to theremaining energy?

ܩܘ 3 8:27 × Course Home openvellum.ecollege.com EPHY 112: General Ph... Course Home Part A You may want to review (Page). For related problem-solving tips and strategies, you may want to view a Video Tutor Solution of The speed of light in vacuum. t Express your answer in seconds to three significant figures. || = How much time does it take light to travel from the moon to the earth, a distance of 384000 km ? Submit Part B ? P Pearson Copyright © 2023 Pearson Education Inc. All rights reserved. Terms of Use | Privacy Policy | Permissions | Contact Us | ? ?

I have the answers for a-c.  For a, the answer is 7.29 x 10-3 C.  For b, the answer is 656 nm and c is 122 nm.  Can you please help with d and e?  Thank you.

The speed of light in a vacuum is 3 x 108 m/s.  What is the ratio of its speed in water (n = 1.33) to its speed in a vacuum?   Enter your answer as a percentage