Homework Answers
Add Answer to:
A skyrocket explodes 100 m above the ground (see the figure below). Three observers are spaced...
Question: Two sources, S, and we spaced a distance 21. apart wher 1 .17 m Figure...
Question: Two sources, S, and we spaced a distance 21. apart wher 1 .17 m Figure 1). They emit sound waves isotropically and in phase, each with a power P-41.2 W. A wall is a distance Laway from the sources. There is a hole in the wall halfway between the two sources with a cross-sectional area A = 27.0 cm and out of 1.00 S2 Figure 1: Schematic of two sound sources, S, and S. spaced a distance 21. Apart,...
A 1,730 lumen light bulb hangs from a tree limb 3 m above the ground? A....
A 1,730 lumen light bulb hangs from a tree limb 3 m above the ground? A. What is the luminance intensity of that light bulb? B. What is the illuminance on the ground at the brightest point (right under the light bulb)? C. What is the illuminance on the ground, three meters away from the brightest point?
A weather emergency siren is mounted on a tower, 177 m above the ground. On one...
A weather emergency siren is mounted on a tower, 177 m above the ground. On one hand, it would be a good idea to make the siren very loud so that it will warn as many people as possible. On the other hand, safety regulations prohibit the siren from exceeding an intensity level of 101 dB for workers standing on the ground directly below the siren. Assuming that the sound is uniformly emitted, what is the maximum power that the...
1. 110 pts) An explosion took place at point A (see the figure below). Three persons...
1. 110 pts) An explosion took place at point A (see the figure below). Three persons located at point IB C and D. Assuming the distances AB, earliest for hearing the sound? AC and AD are the same. What is the order from the last to [a] D, B and C [bl C, B and D (el C, D and BId] B, C and D lel D, C and B D Air Land Water nderground tunnel
The figure below shows a radio-wave transmitter and a receiver, both h = 41.0 m above...
The figure below shows a radio-wave transmitter and a receiver, both h = 41.0 m above the ground and d = 700 m apart. The receiver can receive signals directly from the transmitter and indirectly from signals that bounce off the ground. XXXXXX Transmitter Receiver (a) If the ground is level between the transmitter and receiver and a 1/2 phase shift occurs upon reflection, determine the longest wavelengths that interfere constructively. (b) If the ground is level between the transmitter...
Three 100 cd point sources are located in a line 4.0 m apart, and each is suspended 3.0 m above a...
Three 100 cd point sources are located in a line 4.0 m apart, and each is suspended 3.0 m above a work bench. Neglecting reflections and assuming cosine law, (a) calculate the total illuminance of the work bench at a point directly below the center source (b) calculate the luminous intensity of one single point source in candela to replace the three point sources used in the above situation on the plane 3 m below at a point directly below...
A simply supported composite beam 3 m long carries a uniformly distributed load of intensity q= 30 kN/m (see figure)
A simply supported composite beam 3 m long carries a uniformly distributed load of intensity q= 30 kN/m (see figure). The beam is constructed of a wood member, 100 mm wide by 150 mm deep, and is reinforced on its lower side by a steel plate 8 mm thick and 100 mm wide. (a) Find the maximum bending stresses σw and σs, in the wood and steel, respectively, due to the uniform load if the moduli of elasticity are Ew =...
1. A firework (small rocket) whose shell has a mass of m 12kg was initially on the ground before being launched to a height of 100m above the ground at which point its horizontal displacement from it...
1. A firework (small rocket) whose shell has a mass of m 12kg was initially on the ground before being launched to a height of 100m above the ground at which point its horizontal displacement from its starting position is 17.6m. At this location its speed is 68m/s and it's at an angle relative to (and above) the horizontal of 80 as depicted in the diagram below. Once it reaches this height it goes off and its shell splits into...
14. See the following figure: 10 N 9 8 G 7 A Tonnes of coal Cost...
14. See the following figure: 10 N 9 8 G 7 A Tonnes of coal Cost = $50 3 B 2 Cost = $80 1 Cost-$40 F M H 1 2 3 4 5 6 7 8 9 10 Number of workers Figure 2. From the Figure 2 above, what can we conclude? Pick among four choices that you think are correct. a. Technology B is more energy-intensive than technology A. b. Technology B dominates technology A. c. Technology A...
2. A water balloon is thrown upward from a window 25 m above the ground and...
2. A water balloon is thrown upward from a window 25 m above the ground and hits the ground 2.95 s later. What's the maximum height above the window that the balloon reaches? a) 3.77 m b) 2.59 m c) 2.21 m d ) 1.82 m e) 1.17 m 400 m 3. A student who can swim with a speed of 2.5 m/s in still water wants to get to the other side of a 400 m wide river whose...
Question: Two sources, S, and we spaced a distance 21. apart wher 1 .17 m Figure 1). They emit sound waves isotropically and in phase, each with a power P-41.2 W. A wall is a distance Laway from the sources. There is a hole in the wall halfway between the two sources with a cross-sectional area A = 27.0 cm and out of 1.00 S2 Figure 1: Schematic of two sound sources, S, and S. spaced a distance 21. Apart,...
A weather emergency siren is mounted on a tower, 177 m above the ground. On one hand, it would be a good idea to make the siren very loud so that it will warn as many people as possible. On the other hand, safety regulations prohibit the siren from exceeding an intensity level of 101 dB for workers standing on the ground directly below the siren. Assuming that the sound is uniformly emitted, what is the maximum power that the...
1. 110 pts) An explosion took place at point A (see the figure below). Three persons located at point IB C and D. Assuming the distances AB, earliest for hearing the sound? AC and AD are the same. What is the order from the last to [a] D, B and C [bl C, B and D (el C, D and BId] B, C and D lel D, C and B D Air Land Water nderground tunnel
The figure below shows a radio-wave transmitter and a receiver, both h = 41.0 m above the ground and d = 700 m apart. The receiver can receive signals directly from the transmitter and indirectly from signals that bounce off the ground. XXXXXX Transmitter Receiver (a) If the ground is level between the transmitter and receiver and a 1/2 phase shift occurs upon reflection, determine the longest wavelengths that interfere constructively. (b) If the ground is level between the transmitter...
1. A firework (small rocket) whose shell has a mass of m 12kg was initially on the ground before being launched to a height of 100m above the ground at which point its horizontal displacement from its starting position is 17.6m. At this location its speed is 68m/s and it's at an angle relative to (and above) the horizontal of 80 as depicted in the diagram below. Once it reaches this height it goes off and its shell splits into...
14. See the following figure: 10 N 9 8 G 7 A Tonnes of coal Cost = $50 3 B 2 Cost = $80 1 Cost-$40 F M H 1 2 3 4 5 6 7 8 9 10 Number of workers Figure 2. From the Figure 2 above, what can we conclude? Pick among four choices that you think are correct. a. Technology B is more energy-intensive than technology A. b. Technology B dominates technology A. c. Technology A...
2. A water balloon is thrown upward from a window 25 m above the ground and hits the ground 2.95 s later. What's the maximum height above the window that the balloon reaches? a) 3.77 m b) 2.59 m c) 2.21 m d ) 1.82 m e) 1.17 m 400 m 3. A student who can swim with a speed of 2.5 m/s in still water wants to get to the other side of a 400 m wide river whose...
Most questions answered within 3 hours.
-
Hello, can someone please help me answer this question?
How much heat is absorbed by a...
asked 15 minutes ago -
A business executive has the option to invest money in two
plans: Plan A guarantees that...
asked 16 minutes ago -
. A marketing researcher conducted a survey of 25 shoppers
randomly selected at the local mall...
asked 31 minutes ago -
Create an comprehensive response to the
following:
Antimicrobial agents work on a multitude of microbes (bacteria,...
asked 33 minutes ago -
6.13 LAB: Step counter. Section 6.3.
A pedometer treats walking 2,000 steps as walking 1 mile....
asked 28 minutes ago -
(14.2) A block of mass m = 10 kg riding on a frictionless
horizontal plane is...
asked 32 minutes ago -
Use any search engine to search for articles about Starbucks
partnership with Tata Companies in India...
asked 30 minutes ago -
Let’s say that for some reason Bank Excess Reserves suddenly
increase sharply. What effect would this...
asked 39 minutes ago -
Given:
Curent Assets: $600,000
Total Assets: $2,600,000
Current Liabilities: $500,000
Total Liabilities: $1,700,000
What is the...
asked 44 minutes ago -
1. What is a “Bankster”? What is insider trading? Why is it
illegal?
2. What is...
asked 42 minutes ago -
A transverse wave on a cord is given by
D(x,t)=0.18sin(2.7x−61.0t), where Dand x are in m...
asked 49 minutes ago -
ASSIGNMENT
ANSWER ANY TWO OF THE FOLLOWING IN 2-3 PARAGRAPHS OF EACH
QUESTION.
1: Where is...
asked 48 minutes ago