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Item 4 Part A Constants | Periodic Table A train whistle is heard at 350 Hz...
A train whistle is heard at 300 Hz as the train approaches town. The train cuts...
A train whistle is heard at 300 Hz as the train approaches town. The train cuts its speed in half as it nears the station, and the sound of the whistle is then 290 Hz. What is the speed of the train after slowing down?
QUESTION 6 10 points The frequency of a train whistle is known to be 470 Hz....
QUESTION 6 10 points The frequency of a train whistle is known to be 470 Hz. If the train approaches at 1/16 the speed of sound (-343 m/s at 20°C), what is the frequency heard by a person near the tracks? Answer in units of Hz and round to one decimal place Click Save and Submit to save and submit. Click Save All Answers to save all answers 7 6 8 9 0
Need help with part b and c roblem 14.45 Constants I Periodic Table Part A A...
Need help with part b and c
roblem 14.45 Constants I Periodic Table Part A A 210 g block hangs from a spring with spring constant 6.0 N/m. Att0 s the block is 15 cm below the equilibrium point and moving upward with a speed of 134 cm/s What is the block's oscillation frequency? Express your answer to two significant figures and include the appropriate units. f 0.85 Hz Previous Answers Correct Part B What is the block's distance from...
Correct Constants| Periodic Table Significant Figures Feedback: Your answer 1431.8 required for this part. Hz was...
Correct Constants| Periodic Table Significant Figures Feedback: Your answer 1431.8 required for this part. Hz was either rounded differently or used a different number of significant figures than The predominant frequency of a certain fire truck's siren is 1350 Hz when at rest. Part B What frequency do you detect if you move with a speed of 20.0 m/s away from it? Express your answer with the appropriate units. 1243.7 Hz Submit X incorrect; Try Again; 3 attempts remaining Review...
phons 100 9 80 60 A 40 20 20 10k 1000 100 10 Frequency Hz) a) At approximately what frequency is the human ear most sensitive? How can you tell? b) If you heard a 300-Hz tone with a sound level of 60...
phons 100 9 80 60 A 40 20 20 10k 1000 100 10 Frequency Hz) a) At approximately what frequency is the human ear most sensitive? How can you tell? b) If you heard a 300-Hz tone with a sound level of 60 dB, approximately how many phons would you perceive? toward you with a speed v, starting a distance of 1 km away att 0. If the train moves very slowly (that is, v is extremely small compared to...
Problem 23.62 K 4 of 6 > v Part A Constants I Periodic Table Calculate the...
Problem 23.62 K 4 of 6 > v Part A Constants I Periodic Table Calculate the image position. A 2.5-cm-tall object is 15 cm in front of a diverging lens that has a -25 cm focal length. Express your answer to two significant figures and include the appropriate units. 37.5 cm Constants I Periodic Table Part B A 2.5-cm-tall object is 15 cm in front of a diverging lens that has a -25 cm focal length. Calculate the image height....
Constants Part A A 75-m-long train begins uniform acceleration from rest. The front of the train...
Constants Part A A 75-m-long train begins uniform acceleration from rest. The front of the train has a speed of 18 m/s when it passes a railway worker who is standing 145 m from where the front of the train started (see the figure below). Figure 1) What will be the speed of the last car as it passes the worker Express your answer to two significant figures and include the appropriate units. Value Units Submit uest Ans Provide Feedback...
part b and c please ( 5 of 15 A Review | Constants Periodic Table Part...
part
b and c please
( 5 of 15 A Review | Constants Periodic Table Part B A solution of water (Kf = 1.86°C/m) and glucose freezes at -- 2.35 °C. What is the molal concentration of glucose in this solution? Assume that the freezing point of pure water is 0.00 °C. Express your answer to three significant figures and include the appropriate units. View Available Hint(s) T'I HAO ? m= Value Units Submit A Review Constants Periodic Table AT)...
' Problem 25.27 Constants Periodic Table Part A A-13 nC charge is located at (z, y)...
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Problem 25.27 Constants Periodic Table Part A A-13 nC charge is located at (z, y) (1.1 cm, 0 cm). What is the z-component of the electric field at the position (z. y-(45 cm, 0 cm)? Express your answer to two significant figures and include the appropriate units. E,Value Units Submit Part B What is the y-component of the electric field at the position (x, gy) (4.5 cm, 0 c)? Express your answer to two significant figures and include the...
Problem 29.29 Calculate the induced em Constants I Periodic Table Express your answer to two significant...
Problem 29.29 Calculate the induced em Constants I Periodic Table Express your answer to two significant figures and include the appropriate units In the figure, the rod moves to the right with a speed of 1.2 m/s and has a resistance of 2.4 1.(Figure 1) The rail separation is 25.0 Cm. The magnetic fiold is 0.38 T, and the resistance of the U-shaped conductor is 25.5 17 at a given instant e Value Units Submit Request Answer Part B Caloulate...
QUESTION 6 10 points The frequency of a train whistle is known to be 470 Hz. If the train approaches at 1/16 the speed of sound (-343 m/s at 20°C), what is the frequency heard by a person near the tracks? Answer in units of Hz and round to one decimal place Click Save and Submit to save and submit. Click Save All Answers to save all answers 7 6 8 9 0
Need help with part b and c
roblem 14.45 Constants I Periodic Table Part A A 210 g block hangs from a spring with spring constant 6.0 N/m. Att0 s the block is 15 cm below the equilibrium point and moving upward with a speed of 134 cm/s What is the block's oscillation frequency? Express your answer to two significant figures and include the appropriate units. f 0.85 Hz Previous Answers Correct Part B What is the block's distance from...
Correct Constants| Periodic Table Significant Figures Feedback: Your answer 1431.8 required for this part. Hz was either rounded differently or used a different number of significant figures than The predominant frequency of a certain fire truck's siren is 1350 Hz when at rest. Part B What frequency do you detect if you move with a speed of 20.0 m/s away from it? Express your answer with the appropriate units. 1243.7 Hz Submit X incorrect; Try Again; 3 attempts remaining Review...
phons 100 9 80 60 A 40 20 20 10k 1000 100 10 Frequency Hz) a) At approximately what frequency is the human ear most sensitive? How can you tell? b) If you heard a 300-Hz tone with a sound level of 60 dB, approximately how many phons would you perceive? toward you with a speed v, starting a distance of 1 km away att 0. If the train moves very slowly (that is, v is extremely small compared to...
Problem 23.62 K 4 of 6 > v Part A Constants I Periodic Table Calculate the image position. A 2.5-cm-tall object is 15 cm in front of a diverging lens that has a -25 cm focal length. Express your answer to two significant figures and include the appropriate units. 37.5 cm Constants I Periodic Table Part B A 2.5-cm-tall object is 15 cm in front of a diverging lens that has a -25 cm focal length. Calculate the image height....
Constants Part A A 75-m-long train begins uniform acceleration from rest. The front of the train has a speed of 18 m/s when it passes a railway worker who is standing 145 m from where the front of the train started (see the figure below). Figure 1) What will be the speed of the last car as it passes the worker Express your answer to two significant figures and include the appropriate units. Value Units Submit uest Ans Provide Feedback...
part
b and c please
( 5 of 15 A Review | Constants Periodic Table Part B A solution of water (Kf = 1.86°C/m) and glucose freezes at -- 2.35 °C. What is the molal concentration of glucose in this solution? Assume that the freezing point of pure water is 0.00 °C. Express your answer to three significant figures and include the appropriate units. View Available Hint(s) T'I HAO ? m= Value Units Submit A Review Constants Periodic Table AT)...
'
Problem 25.27 Constants Periodic Table Part A A-13 nC charge is located at (z, y) (1.1 cm, 0 cm). What is the z-component of the electric field at the position (z. y-(45 cm, 0 cm)? Express your answer to two significant figures and include the appropriate units. E,Value Units Submit Part B What is the y-component of the electric field at the position (x, gy) (4.5 cm, 0 c)? Express your answer to two significant figures and include the...
Problem 29.29 Calculate the induced em Constants I Periodic Table Express your answer to two significant figures and include the appropriate units In the figure, the rod moves to the right with a speed of 1.2 m/s and has a resistance of 2.4 1.(Figure 1) The rail separation is 25.0 Cm. The magnetic fiold is 0.38 T, and the resistance of the U-shaped conductor is 25.5 17 at a given instant e Value Units Submit Request Answer Part B Caloulate...
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