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The corners of an equilateral triangle lie on a circle that has a radius of .25m. What is the length of a side of the triangle?
A proton is placed at the origin of any y coordinate system. The proton is floating because an electron is fixed on the y-axis, How far away from the proton in the electron
a 6cm diameter horizontal pipe gradually narrows to 4cm. whenwater flows throught this pipe at a certain rate the
An electron moves at right angles to a magnetic field of 0.109 T. What is its speed if the force exerted on it is 9×10-15 N.
A satellite has a mass of 6264 kg and is in a circular orbit 4.32 × 105 m above the surface of a planet. estimate the true weight of the satellite
The pilot of an airplane travelling 200 km/h wants to drop supplies to flood victims isolated on a patch of land 165m below. The supplies should be dropped how various seconds before plane is directly overhead.
A 0.15g honeybee acquires a charge of 21pCwhile flying, What is the ratio of the electric force on the bee tot he bee's weight and What electric field strength and direction would allow the bee to hang suspended in the air
The isotope 204 Pb decays via alpha decay. The measured atomic mass of 204 Pb is 203.97304 u , Calculate the kinetic energy of the alpha particle
A dampled harmonic oscillator is made from a 0.8kg mass on a k=14N/m spring with a damping constant of 400g/s, What is the energy of the oscillator after one oscillation
Why is it that a grow-lamp tube has an apparent color temperature of 5500 K and is cool to the touch. However, the much dimmer tungsten lamp burns on touch? What would the blackbody spectrum of the tube look like?
A cylinder contains a piston on each side of which is one kilomole of an ideal gas. The walls of the cylinder are diathermal, What is the change in the Helmholtz potential
You attach a meter stick to an oak tree, such that the top of the meter stick is 2.47 meters above the ground. how high above the ground was the acorn before it fell
a spring has a constant k=8.75 N/m. if the spring is displaced 8.150 m from its equilibrium position, what is the force that the spring exerts
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