Thanks for the help on the first part. The second part of the question was asking, "how far does a knot on the string travel in the same time interval?" Personally, I'm quite confused with the second part as well. Is it asking if there was a knot tied into the string?
Homework Statement
So, I was wondering how I can correlate frequency, amplitude, wavelength, period, and time with each other. I'm trying to solve this problem. A 4.5 Hz wave with an amplitude of 12 cm and a wavelength of 27 cm travels along a stretched horizontal string. a) how far does a...
Ok I get it. I went and found the Kinetic energy of the block/puddy after I found the final velocity of the two. Since you said that they were conserved I set the K=Uspring. and solved for x after converting meters to centimeters. Thanks for the help! :)
Homework Statement
A 0.440 kg block is attached to a horizontal spring that is at its equilibrium length, and whose force constant is 23.0 N/m. The block rests on a frictionless surface. A 5.90*10^-2 wad of puddy is thrown at the block, hitting it with a speed of 2.50 m/s and sticking. How...
Well, I went ahead and made a picture representing what I needed and what not. I than set the x and y directions to try to make equations to solve for the variables.
So, in the x direction, I had -(mu sub k) + Fcos21= ma
For the y direction I set an equation -mg+N-Fsin21=0
I wrote fk =mu...
Homework Statement
to move a large crate across a rough floor you push it with a force of 21 degrees below the horizontal of F. find the necessary force to move the 32 kg crate with a coefficient of static friction of floor and crate is 0.56?
Homework Equations
The Attempt at a...
Homework Statement
You are in a car accelerating the car at 15 m/s^2 without spinning tires out. determine the minimum coeff of static friction between the tires and the road to make this possible
Homework Equations
The Attempt at a Solution
Homework Statement
A baseball player slides into 3rd base with an intitial speed of 3.6 m/sec. If coefficient of kinetic friction between the player and the ground is 0.41, how far does the player go before rest?
Homework Equations
Fx= -fk= ma
fk= mu sub k *N
The Attempt at a Solution
Homework Statement
This was a problem I needed help on.
A train is traveling up a 3.73 degree incline at a speed of 3.25 m/s when the last car breaks free and begins to coast without friction.
a). how long does it take for the last car to come to rest momentarily?
b). how far did the...
Homework Statement
An archer shoots an arrow horizontally at a target 16 meters away. The arrow is aimed directly at the center of the target, but it hits 57 centimeters lower.
What was the intitial speed of the arrow?
Homework Equations
The Attempt at a Solution
Homework Statement
Problem 1: A model rocket rises with constant acceleration to a height of 3.9 meters, at which point its speed is 28.0 m/s. How much time does it take for rocket to reach this height? What was magnitude of rocket's acceleration? Find the height and speed of the rocket after...
Homework Statement
You jog at 9.5 km/hr for 8.0 km. You jump into a car and drive 16 km. What speed of the car do you need to cover a total distance of 24 km with an average speed of 22 km/hr
Homework Equations
The Attempt at a Solution