Recent content by redhot209

Note: ^i means carrot on top of variable Homework Statement A particle with charge 4 µC is located on the x-axis at the point 10 cm, and a second particle with charge -3 µC is placed on the x-axis at 4 cm. What is the magnitude of the total electrostatic force on a third particle with a charge...

Ok so, I was reviewing some of my old physics problems, to understand it better. I have no clue how I did these problems, so I was wondering if anyone can help me? 1. A polar bear of mass 200 kg stands on an ice floe 100 cm thick. What is the minimum area of the floe that will just support the...

Homework Statement You blow up an ordinary party balloon with air until it has a diameter of 5.5 inches. Your friend blows up another balloon with helium gas until it has a diameter of 11 inches. Air consists mostly of O2 and N2 molecules, while helium gas consists of He atoms. Assume the...

Homework Statement A 0.296 kg mass is attached to a spring and executes simple harmonic motion with a period of 0.18 s. The total energy of the system is 3.3 J. Find the force constant of the spring. Answer in units of N/m.Homework Equations k=m(t/2\pi)^2The Attempt at a Solution...

Homework Statement A block of mass 3 kg is hung from a spring, causing it to stretch 6 cm at equilibrium, as shown below. The 3 kg block is then replaced by a 4 kg block, and the new block is released from the position shown below, at which point the spring is unstretched. How far will the 4...

Homework Statement What is its momentum halfway to its maximum height? Answer in units of kg m/s A 0.12 kg ball of dough is thrown straight up into the air with an initial speed of 11 m/s. The acceleration of gravity is 9.8 m/s^2. What is the momentum at its maximum height? Answer in units...

O I see I totally misread the question... yea the intial speed threw me off... i under stand it now. thanks a lot!

Homework Statement Already Solved(Part 1) :A 30-06 caliber hunting rifle fires a bullet of mass of 0.00689 kg with a velocity of 778 m/s to the right. The rifle has a mass of 3.34 kg. What is the recoil speed of the rifle as the bullet leaves the rifle. Answer in units of m/s. Answer is 1.6049...

Homework Statement A 2450 kg car traveling to the west at 16.4 m/s slows down uniformly under a force of 8930 N to the east. a) How much force would be required to cause the same acceleration on a car of mass 3170 kg? Answer in units of N. Homework Equations The Attempt at a...

sorry to inform you but the velocity isn't zero.

So how would I find V, as the final velocity?

1. An outfield throws a 1.51 kg baseball at a speed of 118 m/s and an initial angle of 41.2 degrees. What is the kinetic energy of the ball at the highest point of its motion? Answer in units of J. 2. Homework Equations :None [b]3. The Attempt at a Solution : I used the equation...