
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!
Hey I got this question wrong on my physics test so if you could help me...
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!
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!
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?...
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!
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)...
I don’t understand what I did wrong. Could you please explain
why it’s 32W/m^2?
Question 16 The speed of sound in air is 340 m/s, and the density of air is 1.2 kg/m3. If the displacement amplitude of a 440-Hz sound wave is 10 μm, what is the intensity of the wave? 16 W/m2 rrect Answer 32 W/m2 0.32 W/m 12 W/n You Answered :0.16 W/m2 2/2 pts Question 17
I got these two questions wrong on my exam....can you walk me through these? Thank you in advance..Trig based Physics. (non-calculus) 1) An angry bird is fired through the air with an initial velocity of 22 m/s in the vertical direction and 40 m/s in the horizontal direction. How far does it fly before it comes back to ground level? 2) A ball is kicked with an initial velocity of 12 m/s in the horizontal direction and 15 m/s in...
Hey guys, I am having a lot of trouble with my homework. Could
you please help? I thumbs up anyone who gives a thorough
explanation and shows the work! I really need to understand these
concepts!
Thanks!
1) At 25 °C, the Ka for formic acid (HCO2H) is 1.8 x 10-4. What is the pH of a 0.10 M aqueous solution of lithium formate (LiHCO2)? 2) What is the pH (aq., 25 °C) of this solution: adding 1.64 grams of...
Hey guys, I am having a lot of trouble with my homework. Could
you please help? I thumbs up anyone who gives a thorough
explanation and shows the work! I really need to understand these
concepts!
Thanks!
1) Using the data in the table below, which conjugate acid is the weakest acid, given that all solutions (aq., 25 °C) are 0.200 M? Explain your choice! Base Kb CIO- 3.3 x 10-7 CO3-2 1.8 x 10-4 HS- 1.8 x 10-7 NH2CH3...
Hey guys, I am having a lot of trouble with my homework. Could
you please help? I thumbs up anyone who gives a thorough
explanation and shows the work! I really need to understand these
concepts!
Thanks a bunch!
1) At 25 °C, the pH of a 0.15 M aqueous solution of CsZ (the cesium salt of HZ) is 10.70. What is the Ka for HZ? 2) Calculate the pH of 0.586 M anilinium hydrochloride (C6H5NH3CI) solution in water at...