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A horizontal meter stick, 100 cm long, supported at the50-centimeter mark has a mass of 500 grams hanging from it at the20-centimeter mark and a 300-gram mass hanging at the 60-centimeter mark. What is the position of the meter stick at which one would hang a third mass of 600 grams to keep the meter stickbalanced?
A flowerpot is accidently knocked off the edge of a balcony 50 m above the ground. Find the velocity and acceleration of the flowerpot at t=2.0s
Sound with a frequency of 431 Hz travels through steel. A wavelength of 11.27 m is measured. determine the speed of the sound in steel
A 1.6kg eagle flying 30m/s west grabs a 0.8kg pelican going 30m/s east. What is the final speed of the eagle and pelican together
A train at rest emits a sound at a frequency of 1045 Hz. An observer in a car travels away from the sound source at a speed of 37 m/s. What is the frequency heard by the observer .
If the bullet leaves the gun at a speed of 280 m/s, by how much will it miss the target.
The .50 kg box shown below is sliding with an unknown initial velocity before it slides down the incline and then collides with a mass less spring of spring constant 4.0 N/m, what was the initial velocity of the box
A steel ball with radius 1 cm is rolling along a table with speed 20.00 cm/sec when it starts to roll up an incline. How high above the table level would it rise before stopping.
a 120kg horizontal flywheel with a 0.5m radius rotates friction-free about an axis through its center. what is the angular acceleration of the flywheel
A charged conducting sphere has a radius of 10.0 cm and is surrounded by an electric field. What is the potential at the center of sphere
A hydrogen atom is in its second excited state (n = 3). calculate angular momentum of the electron
An oscillating LC circuit consists of a 73.7 mH inductor and a 5.39 ?F capacitor. If the maximum charge on the capacitor is 3.74 ?C, what are the total energy in the circuit
A heat pump has a coefficient of performance of 3.90, How much energy does it deliver into a home during 12 h of continuous operation
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