

Okay, so I got all of these wrong and I think I made the same mistake......
For this question, I got the answer as 0.00001172. It was
marked wrong, I dont know what I did wrong. the second picture are
my calculations.
uestion 8 O out of 3 points Hydrogen peroxide decomposes into water and oxygen in a first-order process. H 20 2(aq) + H200) liq+ 1/2O2(e) At 20.0°C, the half-life for the reaction is 3.92 x 10 seconds. If the initial concentration of hydrogen peroxide is 0.52 M, what is the concentration after 7.00 days?...
Hey I got this question wrong on my physics test so if you could
help me find the right answer and describe how you got it that'd be
great. Thanks!
12. A guitarist is tuning a guitar. She hears a low beat every 4.0 seconds. What is the difference between the correct frequency and measured frequency of the guitar string? (1 point) X (0pts) 0.5 Hz O (0pts) 4 Hz O (0pts) 2 Hz O (1pt) 0.25 Hz 0/1 point
Hey I got this question wrong on my physics test so if you could
help me find the right answer and describe how you got it that'd be
great. Thanks!
3. The maximum pressure variations the human ear can withstand are about how much above and below atmospheric pressure? (1 point) O (0pts) 0 Pa X (0pts) 20 Pa C (1pt) 30 Pa C (0pts) 120 Pa 0/1 point
Hey I got this question wrong on my physics test so if you could
help me find the right answer and describe how you got it that'd be
great. Thanks!
14. Two cellos are being played in a duet. At a certain point, one cello plays a note of frequency 196 Hz and the other plays a note of frequency 220 Hz. What is the period of the beat? (1 point) C (0pts) 4s O (0 pts) 0.1s X (0pts)...
Hey I got this question wrong on my physics test so if you could
help me find the right answer and describe how you got it that'd be
great. Thanks!
1. What is the pressure amplitude for the threshold of human hearing? (1 point) X (0pts) 1.0x 10-12 w/m- O (1pt) 2.0x 10-5 W/m2 O (0pts) 5.0x102 w/m2 O (0pts) 1.2 x 10-10 w/m2 0/1 point
so i attempted to do this question and as you can see, i got
it wrong. Can you explain how these answers were found with steps,
formulas, and work shown please?
_u-IgNsikr7;8P3jH-WvUgVx-Up SERIALES COP S ection 7.3 Exercises Next 1 Previous 2 3 4 5 6 Question 1 of 6 (1.5 points) View problem in a pop-up 6.3 Section Exercise 9 - 14 (calc A sample of size 50 will be drawn from a population with mean 12 and standard...
Hey I got this question wrong
on my physics test so if you could help me find the right answer
and describe how you got it that'd be great. Thanks!
8. A cyclist is traveling at a constant velocity of 5.00 m/s. The cyclist approaches a stationary musician playing a note of frequency 281 Hz. The air is still and the speed of sound is 340 m/s. What is the frequency of the note that the cyclist hears? (1 point)...
Hey I got this question wrong on my physics test so if you could
help me find the right answer and describe how you got it that'd be
great. Thanks!
9. At an auto race, a member of the pit crew stands beside the track. A car approaches him at 110 m/s and emits a sound at frequency 1200 Hz. The air is still and the speed of sound is 340 m/s. What frequency will the pit crew member hear?...
Can someone explain to me how I got the wrong answer. Should I
not have rounded it?
Incorrect Question 6 0/2 pts Calculate the rms velocity (m/s) of CO2 at 76°C. Enter your answer as an integer. 141
So I already asked this question and I got a response but I feel the answer may be wrong. The person who answered said simply to plug 30 into the second formula and that's our answer. The question asks for the probability that (30) dies within the next 20 years. So there's a possibility of death before 40 so wouldn't we work that formula into the answer as well? You are given the following survival function of a new born:...