Recent content by Imuell1

Homework Statement A chemical plant produces pesticide that contains a molecule potentially harmful to people if the concentration is too high. The plant flushes out the tanks containing the pesticide once a week, and the discharge flows into the river. The molecule breaks down gradually in...

Homework Statement A satellite that has a mass of 300 kg moves in a circular orbit 5.00 X 107 m above Earth's surface. (a) What is the gravitational force on the satellite? (b) What is the speed of the satellite? (c) What is the period of the satellite? Homework Equations Fg=...

Homework Statement A uniform cylinder of mass M and radius R has a string wrapped around it. The string is held fixed, and the cylinder falls vertically. (a) Show that the acceleration of the cylinder is downward with a magnitude a=2g/3. (b) Find the tension in the string. Homework...

Homework Statement Suppose that the surfaces described are not frictionless and that the coefficient of kinetic friction between the block and the surfaces is 0.30. The block has an initial speed 7.0m/s and slides 2.0 m before reaching the ramp. Find (a) the speed of the the block when it...

Homework Statement In the attachment there is a drawing of the situation. Mass one = 4kg and Mass two = 5kg The coefficient of friction between mass one and the inclined plane = 0.24 Find the magnitude of the acceleration of the masses and the tension in the cord. Homework Equations Fk=...

when y=h, H=-Vyo^2/2a so then to find the velocity of h/2 do i make the equation H/2=(Vy^2-Vyo^2)/2a ? then i substitute for H and get (-Vyo^2/2a)/2=(Vy^2-Vyo^2)/2a?

Ugh, I am still so confused. I emailed my professor also and he said to use the equation Vy^2-Vyo^2=2ay and to put H in terms of Vy. For some reason I still have no idea where to begin still. I got y=(Vy^2-Vyo^2)/2a but even if that is correct, I don't know what to do next.

no i didn't try that. i am still so confused. which equation would i start with?

Homework Statement at 1/2 of its maximum height, the speed of a projectile is 3/4 of its initial speed. what was its launch angle?(ignore any effects due to air resistance.) Homework Equations The Attempt at a Solution I don't even know where to begin.