Recent content by chris097

Homework Statement Radio waves from a star, of wavelength 231 m, reach a radio telescope by two separate paths. One is a direct path to the receiver, which is situated on the edge of a cliff by the ocean. The second is by reflection off the water. The first minimum of destructive...

I end up getting 50.4 and 55.5 Hz, which is wrong.

Homework Statement A 0.0120 kg, 2.05 m long wire is fixed at both ends and vibrates in its simplest mode under a tension of 202 N. When a tuning fork is placed near the wire, a beat frequency of 5.10 Hz is heard. What are the possible frequencies of the tuning fork? (enter the smaller...

Does it matter which equation gets subbed into which?

Homework Statement A small mosquito is hovering in the air when a fast and massive dinosaur charges right into it with a speed of 2.62 m/s. If the collision is elastic what is the speed of the mosquito when it bounces off of the dinosaur. Homework Equations momentum equation The...

So i would insert one into the other to solve for the unknown?

Homework Statement Cart1, with mass m, is initially at rest and is struck by cart2, which has a mass of 337 kg and initial speed of 2.07 m/s. The collision is elastic and after the collision cart2 continues to move in its original direction at 0.900 m/s. Find m, the mass of cart1...

Thank you. But what do you mean consider on the bottom block. Do you mean use only the weight of the bottom block?

Homework Statement The coefficient of static friction is 0.636 between the two blocks shown. The coefficient of kinetic friction between the lower block and the floor is 0.138. Force F causes both blocks to cross a distance of 7.00 m, starting from rest. What is the least amount of time in...

I'm having trouble with the same problem

So its response to the change in the environment is that it moves closer to the food source because this is the ideal position for it to feed. Also is this a negative or positive feedback loop. I don't think that really applies here because the change is not regulated internally.

I recently did a lab where i added a single grain of yeast to a water drop with a Daphnia. I was wondering how this experiment represents homeostasis. All i noticed was the Daphnia moved closer to the food source and pretty much burrowed inside of the granule.

cyclohexane, cyclohexen, xylene, toluene

Vf = Vi + aav(t) and thank you for the welcome :)

Homework Statement A watercraft with an initial velocity of 6.4 m/s [E] undergoes an average acceleration of 2.0 m/s^2 [S] for 2.5 s. What is the final velocity of the watercraft The Attempt at a Solution i'm lost :(