Tuesday
July 28, 2015

Posts by Amar


Total # Posts: 22

ap physics
A student rides his bicycle at a constant speed of 2.20 m/s along a straight, level road. If the bike's tires each have a radius of 0.338 m, determine the following. (a) What is the tires' angular speed? rad/s (b) What is the net torque on each tire? N · m
March 19, 2015

ap physics
A mass of 1.50 kg is at (−2.55 m, 0) and a 2.04-kg mass at (4.00 m, 4.00 m). Find the center of mass of the system. m, m
March 19, 2015

ap physics
A man opens a 1.14-m wide door by pushing on it with a force of 49.5 N directed perpendicular to its surface. (a) What magnitude torque does he apply about an axis through the hinges if the force is applied at the center of the door? N · m (b) What magnitude torque does...
March 19, 2015

physics
A war-wolf, or trebuchet, is a device used during the Middle Ages to throw rocks at castles and now sometimes used to fling pumpkins and pianos. A simple trebuchet is shown in the figure below. Model it as a stiff rod of negligible mass 3.00 m long and joining particles of ...
March 8, 2015

ap physics
A beam resting on two pivots has a length of L = 6.00 m and mass M = 87.0 kg. The pivot under the left end exerts a normal force n1 on the beam, and the second pivot placed a distance ℓ = 4.00 m from the left end exerts a normal force n2. A woman of mass m = 54.0 kg ...
March 8, 2015

AP physics
Solve the equations 1/2mv2 + 1/2Iω2 = mgh and v = rω for the speed v using substitution, given that I = mr2 and h = 4.20 m. (Note that mass m and radius r will both cancel, so their numerical values aren't required.) m/s
March 6, 2015

Ap physics
The two conditions for equilibrium often result in a system of equations such as F1 + F2 = 44.0 N and 3.00F1 − 8.00F2 = 0. (Due to the nature of this problem, do not use rounded intermediate values in your calculations—including answers submitted in WebAssign.) (a) ...
March 6, 2015

math
find general solution of y¡±-y¡¯=squre of sinx by variation parameter
November 6, 2013

math
i dont know answer.i am tring to find answer
November 6, 2013

3rd math
2/5
March 13, 2013

Chemistry
110
January 11, 2013

Rotational Motion Physics Problem
A car starts from rest on a curve with a radius of 150 and accelerates at 1.2.Through what angle will the car have traveled when the magnitude of its total acceleration is 2.2 ?
October 3, 2012

Physics
whats secad
October 2, 2012

science
100squreroot3/3
April 24, 2012

geometry
An aeroplane when 6000 m high passes vertically above another plane at an instant when their angles of elevation at the same observing point are 60° and 45° respectively. How many meters higher is the one than the other?
November 15, 2011

science
light waves hitting the surface of a concave mirrror
April 20, 2011

Math
Determine the vector parametric equation of the line through the origin and the intersection of the lines (find the co-ordinates of this intersec- tion as well) v(t) = { 2t + 3 −4t t−3 } w(s) { 10s + 3 5s − 25 4 − 2s}
October 12, 2010

Math
the vector u makes angles α(alpha), β(beta), γ(gama) with respectively the X–axis, the Y –axis and the Z–axis. Find γ if α = 2π/3 and β = π /4
October 12, 2010

chem 12
write net ionic equations for each situation in which the precipitate redissolved on the addition of HNO3 or NH3.
February 28, 2010

physics
how does the gravitational force exerted by earth on the sun compare with the gravitational force exerted by sun on the earth? and would you expect tides to be higher at the equator or at the north pole? why?
January 24, 2010

physics
how would u solve this
September 22, 2009

physics
i still havent solved
September 22, 2009

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