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A gold prospector finds a solid rock that is composed solely of gold and quartz. The volume and mass of the rock are, respectively, 3.14 × 10-3m3 and 12.2 kg. The density of gold is 19 300kg/m3, and the density of quartz is 2660kg/m3. Evaluate the mass of the gold in the rock.
Smoke particles in the air typically have masses of the order of 10^-16 kg. Find the root-mean-square speed of Brownian motion for a particle with a mass of 3.00 x 10^-16kg in air at 300K
A 2.80 \mu F capacitor is charged to 460 V and a3.75 \mu F capacitor is charged to 525 V. These capacitors are then disconnected from their batteries, andthe positive plates are now connected to each other and thenegative plates are connected to e..
An object has a kinetic energy of 303 J and the momentum of magnitude 22.9 kg·m/s. Find the speed and the mass of the object.
Average Speed The average speed is the total distance covered over the time interval it took to cover that distance. Average Speed = total distance / total time. It is 180 kilometers between Long Beach and San Diego.
A long string of tension T and mass density η is attached to a small sphere of mass m. What is the displacement of the string on the right side of the mass
A hot piece of copper (cc = 386J/kg·K) of mass mc = 3kg and unknown initial temperature Tc is dropped into a container of water (cw = 4186 J/kg · K) of mass mw = 1 kg, What is the initial temperature Tc of the copper
An 9.00 point mass and a 14.0 point mass are held in place 50.0 apart. Find the magnitude of the acceleration of the particle and direction
A solar concentrating heat exchanger system directs sunlight onto a long,straight pipe. The pipe recieves 153.616 btu/h per foot of length. What is the entropy production
A uniform 25 kg door that is 2.4 m high by 1.10 m wide is hung from two hinges that are 20 cm from the top and 20 cm from the bottom. If each hinge supports half the weight of the door, find the magnitude and direction of the horizontal components of..
a long string carries a wave a 5.20-m segment of the string contains four complete wavelengths and has a mass of 180 g.
A home run is hit such a way that the baseball just clears a wall 23 m high located 113 m from home plate. How much time does it take for the ball to reach the wall
batteries are rated in terms of ampere-hours a middot h. for example a battery that can produce a current of 2.00 a for
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