Homework Statement
A curve of radius 67 m is banked for a design speed of 95 km/h. If the coefficient of
static friction is 0.30 (wet pavement), at what range of speeds can a car safely handle the
curve?
Homework Equations
I drew this freebody diagram.
The Attempt at a...
Homework Statement
A bucket of mass 2.00 kg is whirled in a vertical circle of radius 1.10 m. At the lowest
point of its motion the tension in the rope supporting the bucket is 25.0 N. (a) Find the
speed of the bucket. (b) How fast must the bucket move at the top of the circle so that
the...
Homework Statement
The energy of particles in a flame at a temperature T might be described by a
Boltzmann distribution. Temperature can be converted to energy (and thereby velocity)
using the gas constant R = 8.3145 J mol-1 K-1. Let us approximate thermal energy in the
flame by RT (squiggly...
I just wrote a test and will try to remember the question and how I answered it to the best of my ability.It was basically asking the find the mass of reactants from the mass of one of the products formed.
My first step was calculate the moles of the product with known mass.
Once I had the...
Huzzah! I have figured it out!
First one must solve for the velocity in the y direction by doing v=d/t which is 1.2m/1.5s and this equals to 0.8m/s.
Now since you have the velocity you can now solve for the acceleration.
We use this equation:
y = Yi + Yvit + 1/2at^2
Solving for...
I can find the Vy by doing v=d/t, then using the equation y = yi + yvit + 1/2at^2 to find the acceleration. I find the y velocity to be 0.8 m/s and the acceleration to be 1.06667 m/s^2. After this I have no idea waht to do
Homework Statement
A bowling ball is suspended from a ceiling hook using a thin piece of rope. The rope is
exerting a 75 N force upward on the ball. Suppose that the rope is unhooked from the ceiling and pulled upward so that the
bowling ball rises 1.2 meters in 1.5 seconds. What will be...