I just have a question that I'm hoping someone can help me with. I just finished a physics course where the final exam weighs at 40% of my final mark while the assignments weight at 60% which =100% total
For my assignments I got a terrible 843.99 out of 1,408. I'm not quite sure what I got...
A force of 52 N is applied to a 12 kg mass resting on a bench where the force of sliding friction is 15 N. The work done in overcoming friction while moving the object 24 m is
w=fd
w=(37N)(24m)
w=888J
Does this procedure seem correct ? :) Thank you!
A 65.0 kg student climbs a set of stairs in 25.0 s with a power output of 95 W. What is the vertical height of the stairs?
I came up with the formula:
W=P x (delta t)
W=95w(25.0s)
2375
Im not sure how this comes in to play:
W = mg (delta h)
Im really confused :|
A 245 Hz sound with a wavelength of 1.41 m is projected into a narrow canyon. If the canyon is 1.50 km long, what time does it take an echo to be heard?
How would I solve for this question? :)
What formula would I use to find the initial velocity?
An object is thrown vertically into the air and reaches a height of 30.0 m. Neglecting air friction, what was the object’s initial velocity?
I dont quite remember how to do this. Is it 30.0m / 9.81[m/s]^2?
A 65.0 kg student climbs a set of stairs in 25.0 s with a power output of 95 W. What is the vertical height of the stairs?
Im not quite sure where to start with this one?