Recent content by seiei

Yup it's D, thanks for the help! ^_^

Homework Statement This is a multi-choice question in one of the past papers I'm doing in preparation for my upcoming exam. All info is provided in the picture attached. Homework Equations SUVAT Equation most likely apply, but unsure how to go about it. The Attempt at a Solution...

s=1/2at^2 when the initial velocity=0

Homework Statement All included in image provided. As you can see, it's a multi-choice qu Homework Equations Acceleration=Velocity/Time Not sure what else... The Attempt at a Solution Uncertain about how to approach this question. Using SI units I eliminated B. Any help would be...

The amplitude will affect the intensities, and the frequency will affect the wavelength of the sound waves

Is anybody able to help me? My physics exam is tomorrow...

Picture of question attached here

Homework Statement Two sources S1 and S2 of sound are situated 80cm apart in air, as shown in the image provided. The frequency of vibration can be varied. The two sources always vibrate in phase but have different amplitudes of vibration. A microphone M is situated a distance 100cm from S1...

Yuss! Thanks for your help Hootenanny! :D

So to find the time it takes for the runner to reach the ground is represented by s=ut+½at² where the initial vertical velocity= 0. Rearranging the equation makes t= 0.45s when a=9.81m/s². Then resolving the horizontal component using the same equation s=ut+½at² a= 0 meaning that u=3÷0.45=...

The time it takes for the runner to reach the ground? (sorry I have to go to bed now, GMT+12 makes it nearly quarter to 11 at night) Hopefully we can resume this tomorrow. Thank you for your time! :)

Zero? I'm not entirely sure. Sorry bout this ><

Isn't the initial velocity the thing I'm trying to figure out? Or is that zero? And the final height is zero (?)

There is a height of 1.0m and an acceleration of 9.81m/s²

Okay I'm feeling a bit lost now... If the final velocity is another unknown, how am I meant to resolve the vertical component?