Recent content by MarineBio

An interesting topic: The gas-filled swim bladder of deep sea fish is under so much pressure in the deep sea that when brought to the surface too rapidly, and therefore relieving the enormous pressure, it explodes. Maybe not an actual explosion, but it swells up to enormous sizes and can...

Ok so Ii/If = (xf^2)/(xi^2) so (2.5x10^-6)/(10^-12) = (xf^2)/(2.11 m^2) 2,500,000 = (xf^2)/(2.11 m^2) 11,130,250 = xf^2 x = SRTQ(11,130,250) x = 3336 m x = 3.336 km I think that looks about right, thank you very much!

Homework Statement A bird watcher is hoping to add a particular song bird to the list of species she has seen. If a person, only 2.11 m from the bird, hears the sound with an intensity of 2.5 x 10^-6 W/m2, how far could the bird watcher be from the bird and still hear it? Assume no...

Problem solved. Thank you

ok so K = (2*pi*m)/T^2 That gives me 2.315 N/m which is also incorrect. Hmm... I don't know.

Homework Statement A 0.26 kg mass attached to a spring undergoes simple harmonic motion with a period of 0.84 s. What is the force constant of the spring? Homework Equations T = 2*pi*SQRT(m/k) The Attempt at a Solution I know this is supposed to be an easy question, but for some...

Homework Statement A 1.90 kg rock is released from rest at the surface of a pond 1.00 m deep. As the rock falls, a constant upward force of 3.80 N is exerted on it by water resistance. Let y=0 be the bottom of the pond. a) what is the rock's kinetic energy at the surface and at the bottom...

Ha! I was making that one WAY more difficult than it actually was. Thank you, problem solved! (this is such a great forum) :smile:

Shoot, when I copy/pasted it did not include the x and y hats. V1 is on the x axis V2 is on the y axis

Homework Statement Object 1 has a mass m1 and a velocity 1 = (2.70 m/s) on the x-axis. Object 2 has a mass m2 and a velocity 2 = (2.95 m/s) on the y-axis. The total momentum of these two objects has a magnitude of 18.6 kg·m/s and points in a direction 66.5° above the positive x-axis. Find m1...

Ok so the answer was -157.78 J and in order to find the coefficient of kinetic friction, uk, I thought it would be to simply divide by (mg) but I guess it isn't that simple in this scenario. How would I determine uk?

Whoops, silly mistake. You're right, I just had to put a negative sign on the work of friction. Thanks.

Homework Statement A 28.0 kg seal at an amusement park slides down a ramp into the pool below. The top of the ramp is 1.80 m higher than the surface of the water and the ramp is inclined at an angle of 30.0° above the horizontal. The seal reaches the water with a speed of 4.90 m/s. What...

Ahh, brilliant. Thank you so much!

Homework Statement A 1.50 kg toy rollercoaster rests on a ramp of height h. When the toy rollercoaster is released, it slides without friction to the bottom of the ramp, and then continues on a flat surface with a rough patch of width 10.0 cm that has a coefficient of kinetic friction µk =...