Physics Work,Power & Energy Level: University
FrictionA 50 kg crate slides down a 5.0m loding ramp that is inclined at an angle of 25^0 to the horizontal. A worker pushes on the crate parallel to the surface of the ramp so that the crate slides down with a constant velocity. If the coefficient of kinetic friction between the crate and the ramp is 0.33 how much work is down by each of the following? (a) the worker (b) the force of friction (c) the force of gravity (d) What is the net work down on the crate?
Physics Work,Power & Energy Level: University
A constant horizontal force of 28 N moves a box with a constant speed along a rough surface. If the force does work at a rate of 50 Wa. What is the boxs speed?
b. How much work is done by the force in 2.7 s?
Physics Work,Power & Energy Level: University
A particular force is described by the equation F = (60 N/M) x x. How much work is done when this force pushes a box horizontally between the following points? (a) x0 = 0 and x = 0.12m (b) x0 = 0.15 m and x = 0.26m ( on this one it doesnt show up the right way here but the first x in the equation is in italics.
Physics Properties Of Matter Level: University
A siphon is a device that allowes a fluid to seemingly defy gravity.The flow must be initiated by a partial vacuum in the tube as in a drinking straw. (a) Show that the speed at which the water emerges from the siphon is given by V=sqrt (2gh). (b) for what values of y will the siphon work?
Physics Waves And Oscillations Level: University
Tension is maintained in a string. The observed wave speed is 24 m/s when the suspended mass is 3.0kg. (a) What is the mass per unit length of the string? (b) What is the wave speed when the suspended mass is 2.0 kg?
Physics Work,Power & Energy Level: University
Spring forceA 1.5 kg block at rest on a tabletop is attached to a horizontal spring having constant 19.6 N/m. the spring is initially unstretched constant 20.ON horizontal force is applied to the object causing the string to stretch. (A) determine the speed of the block after it has moved 0.03m from equilibrium if the surface between the block and tabletop friction between block and tabletop is 0.200.
Physics Heat & Thermodynamics Level: University
Steam at 100oC is added to ice at 0oC. (a) find the amount of ice melted and the final temperature when the mass of steam is 10g and the mass of ice is 50g (b) repeat with steam of 1.0g and ice of mass 50g.
Physics Heat & Thermodynamics Level: University
A 75kg cross country skier glides over snow. The coefficient of friction between skis and snow is 0.20. Assume all the snow beneath his skis is at 0oC and that all the internal energy generated by friction is added to snow that sticks to his skis until melted. How far would he have to ski to melt 1.0 kg of snow?
Physics Properties Of Matter Level: University
A helium-filled ballon is spherical with a radius of 0.04m. When released it lifts a length (h) of the string and hten remains in equilibrium. Determine the value of h. When deflated the ballon has a mass of 0.25 kg. (hint: only that part of the string above the floor contributes to teh lond being held up by the balloon.
Physics Properties Of Matter Level: University
A light spring of constant k=160 n/m rest vertically on the bottom of a large beaker of water. A 5.00 lg block of wood (density = 650 lg/m^3) is connected to the spring and the block- spring system os allowed to come to static equilibrium. What is the elongation ( triangle) L of the spring?
Physics Electrostatics Level: University
What is the capacitance of a capacitor constructed from 2 rolls of aluminum foil each with dimensions of 1.0 by 20yd. Seperated by wax paper of the same area. Assume the thickness of the paper to be. 125 mm and k = 3.5 I need these problems within in 15 hours contact me asap and let me know if this is possible.
Physics Electrostatics Level: University
Find the ratio of Fe/Fg(f sub e and f sub g) of the electric force and the gravitational force exerted by the proton on the electron.
Physics Electrostatics Level: University
A particle having a charge q = 3x 10^-5C moves from point a to b a total liner distance of .5 meter. If the mass of the charge is 5 x 10^-5 kg and the electric field is uniform and in the direction of a to b E = 200N/C what is the increase in energy in eV? In Joules? How fast is the particle going at point b?
Physics Electrostatics Level: University
A spherical balloon with a 6 cm radius has charge distributed over its surface. At a distance of 50 cm from the center of the balloon the electric field strenth is 7.2 x 10^4 N/Ca. What is the magnitude of the charge on the balloon
b. What is the electric field strength 3 cm from the center of the ballon
c. What is the electric field strength 18 cm from the center of the ballon.
d. What is the electric potential inside the balloon.
e. What is the electric potential 18 cm from the center of the balloon?
Physics Electrostatics Level: University
A total charge of 100micro C is distributer uniformly throughout a spherical region of space with a radius of 20.0 cm. Find the electric field strenght at (a) r = 10 cm from the center of the sphere (b) r = 30cm from center of sphere (c) What is the volume charge density?