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The intensity due to a number of different sources is the sum of the individual intensities.
a. When all of the Octomom's octuplets cry simultaneously, how many decibels greater is the sound level than when one baby cries?
b. To increase the sound level by the same number of decibels, how many additional babies would be required?
The magnetic field inside the solenoid changes at a rate of 1.5 T/s. A conducting coil with 2000 turns surrounds the solenoid. What is the potential difference induced in the coil
A 2 kg car moving towards the right at 4 m/s collides head on with an 8 kg car moving towards the left at 2 m/s, After the collision, the velocity of the combined bodies is
A cyclist, traveling at a constant speed, covers a distance of 6860 m in a time period of 34.5 minutes. Calculate the power the cyclist must provide in overcoming that force
A 0.360 kg mass is attached to a spring with a force constant of 25.9 N/m, Calculate the speed of the mass
The isotope of lithium used in a hydrogen bomb is Li-6, whose nucleus contains 3 protons and 3 neutrons. When a Li-6 nucleus absorbs a neutron, a nucleus of the heaviest hydrogen isotope, tritium (H-3), is produced.
A 2.0 kg ball tied to a string fixed to the ceiling is pulled to one side by a force to an angle of ? = 33.5°. how large is the force that is holding the ball in position
A 6.61 mC particle moves through a region of space where an electric field of magnitude 1260 N/C points in the positive x direction, calculate the magnitude of the particle's velocity
The temperature of a copper bar rises by 10.0°C when it absorbs 2.03 kJ of energy by heat. The mass of the bar is 525 g
For a damped simple harmonic oscillator, the block has a mass of 2.2 kg and the spring constant is 13 N/m. The damping force is given by -b(dx/dt), How many oscillations are made by the block in this time
q1. light from a he-ne laser lambda 632.8 nm strikes a pair of slits at normal incidence forming a double-slit
A object of mass 3.00 kg is subject to a force Fx that varies with position as in the figure below. Find the work done by the force on the object
A 0.025 kg golf ball moving at 21.0 m/s crashes throughout the window of a house in 2.0 10-4 s. After the crash, ball continues in the same direction with a speed of 10 m/s. assuming the force exerted on the ball by the window was constant, what w..
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