Recent content by xuhhad

OK i understand but i still don't no what formula to use.

Yes thank u for posting i already completed the question thank u for the help though

The 3rd harmonic on a piano string occurs when a 45.0 cm wave is produced. How long is the string. This question is really confusing can i get some leads to help me out please and thank u

OHHHH i get it i just have to use the work formula again, something like this correct W=(-Ff)cos θ * Δd Thak u for all the help :approve:

i still don't understand how i can find the frictional force.

Yes but what do i do from there i am really confused

hmm the work formula would be W=mg/Δd

A 25.0-kg child in Red Deer pumps herself on a swing when she kicks upward on the downswing, thus changing the distance from the pivot point to her centre of gravity from 2.40 m to 2.28 m. 1)The resonant frequency of her swing before the kick is: ___ Hz, and the resonant frequency after the...

Yes it does :/ and again i am stuck sorry for the inconvenience. I really need help.

"A 50 kg crate is being dragged across a floor by a force of 225 N at an angle of 40° from the horizontal. The crate is dragged a distance of 5.0 m and the frictional force is 60 N." Now from that information i am supposed to find the work done by the applied force on the object. This is...