While sitting next to a road on a calm, warm 27.9ºC evening, you see an ambulance's lights flashing in the distance coming towards you. You hear a frequency of 150 Hz (you have a very keen ear!). However, you know that ambulances have sirens that emit sound at 140 Hz. How fast is the ambulance approaching you, in m/s

Q: What is The direction of A=2i-5j

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Q: bat flying at 4.65 m/s is chasing an insect flying in the same direction. The bat emits a 39.8-kHz…

A: Given data: Speed of bat vs=4.65 m/s. Received frequency f∘=40.3 kHz. Transmitted frequency f=39.8…

Q: In the upper atmosphere at altitudes where commercial airlines travel, we find extremely cold…

A: Given data *The given temperature is T = -470 C = (-47 +273) K = 226 K

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Q: The light intensity (2.80418x10^2) cm from a point source is (1.28990x10^0) kW/m². What is the…

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A: The objective of the question is to find the distance between the bat and the fly using the…

Q: Picnickers see a lightning flash and hear the resulting thunder 7.8 s later. If the storm is…

A: Speed is given by, V=dt...................(1) Where, V=velocity               d=distance…

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Q: You place your ear onto a steel railroad track and hear the sound of a distant train through the…

A: Let ta be the time taken to reach the sound through air and ts be the time taken to reach the sound…

Q: (a) Your heart beats with a frequency of1.45 Hz. How many beats occur in a minute? (b) If the…

A: Part (a) Given: The frequency of heart beats is f=1.45 Hz. The time is t= 1 min. The expression…

Q: what frequency corresponds the wavelength of 4.3 [m]. If the speed of sound is 343 [m / s

A: Write the given values of the problem- Wavelength(λ) λ=4.3 mSpeed of sound(v)v=343 ms

Q: Air temperature in a desert can reach 53.0°C (about 127°F). What is the speed of sound (in m/s) in…

A: Given Temperature is T=53.0oC

Q: During a thunderstorm, you see a strike of lightning and then five seconds later you hear the…

A: The time taken by the lightning strike to reach our eye is given by The time taken by the thunder…

Q: The speed of sound in steel is about 15 times greater than that in air. If the frequency of sound…

A: Given data The speed of sound in steel is vs=15va The speed of sound In the air is va=344 m/s The…

Q: Some friends drop a water balloon out of a window 12.0 m above the ground.  As it falls, one of the…

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Q: Tom is flying in his fighter jet at Mach 1.94 at an altitude of 1550 m. He flies past his friend Val…

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Q: During a thunderstorm, 5.0 s elapses between observing a lightning flash and hearing the resulting…

A: The speed of light (u) = 3 ×108 msThe speed of sound in air (v) = 344 msLet the distance of the…

Q: At 20°C, a student sets off a firecracker and hears the echo from the Physics building 1.3 seconds…

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Q: An enormous thunderstorm covers Dallas-Ft. Worth. Your best friend Clark is a storm chaser and heads…

A: Given-Here, d is the distance of Clark, s is the distance of the person from the tree, and v is the…

Q: 2. Carol drops a stone into a mine shaft 182.1 m deep. How soon after she drops the stone does she…

A: Given data ,

Q: What percent of patients artery is blocked? you are working in a cardiac unit an are tasked to…

A: From Contnuity equation, A1*v1 = A2*V2 here, v1 = normal speed of blood in non blocked artery = 30…

Q: While hiking through a canyon, Noah Formula lets out a scream. An echo (reflection of the scream…

A: The distance is given by, d=vt The speed of sound wave is, v=7.2 km/hr  =342 m/s

Q: An enormous thunderstorm covers Dallas-Ft. Worth. Your best friend Clark is a storm chaser and heads…

A: Write the given values with the suitable variables. d=184 ms=144 km=144×103 mv=343 m/s Here, d is…

Q: Sム 452 ISV

A: Solution : I = RV I = 2/10 = 1/5 =0.2 A I = 4/10 = 2/5 = 0.4 A I = 5/15 = 1/3 =0.3 A I = 5/15 = 0.3…

Q: Picnickers see a lightning flash and hear the resulting thunder 9.50 s later. If the storm is…

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