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A pendulum consists of a point mass of 5 kilogram and is hanging from a mass less string of 2 m. You pull the point mass to a height 1 m from the resting position, and then let the ball go. Obtain the angular velocity of the pendulum when the point mass is exactly at the lowest point?
a long pipe of outer radius 3.40 cm and inner radius 2.89 cm carries a uniform charge density of 2.22 mcm3. using
An inventor claims that he has designed an engine which will produce a power output of 170kW while burning a unique fuel which releases 21,000kJ of heat in a minute. He states the upper and lower temperatures of the engine are 670K and 330K, respecti..
A tank truck takes on a load of 45 725 litters of gasoline in Houston at 32.0°C. The coefficient of volume expansion, \beta, for gasoline is 950 x 10-6(°C)-1. The truck delivers its load in Omaha, where the temperature is -18.0°C.
dnp dinitrophenol is a compound that allows hydrogen ions to leak across a membrane. this leakage prevents the
one end of a wire is attached to a ceiling and a solid brass ball is tied to the lower end. the tension in the wire is
a thin 20-kg, 5.0 m long rod is bent into a semi circle. A 0.10 kg object is placed at the center of the curvature of the semi circle. WHat is the gravitational force of the rod on the object
The principal quantum number for an electron in an atom is n = 7, while the magnetic quantum number ism =6. What is the number of orbital quantum number values that this electron could have?
The Earth has mass ME and average radius RE. Find an expression for the moment of inertia IE of the Earth on its axis in terms of the given parameters
a certain mass m1 of ice initially at -5 c is placed into a perfectly isolated container along with a certain mass m2
Two small identical conducting spheres are placed with their centers 25 cm apart. One is given a charge of 20.0 nC and the other given a charge of -36.0 nC. What is the electrical force of each sphere on the other?
An unspecified force causes a 0.5-kg object to accelerate at 0.2 m/s2. If 0.3 kg is added to the 0.5-kg object and the force remains the same, what is the acceleration (in m/s2) of the heavier object?
A typical digital cell phone emits radio waves with a frequency of 1.9 GHz. how many photons are emitted each second
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