Tuesday

March 31, 2015

March 31, 2015

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*

**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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