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A sound wave from a siren has an intensity of 98.5 W/m2 at a certain point, and a second sound wave from a nearby ambulance has an intensity level 12 dB greater than the siren's sound wave at the same point. What is the intensity level of the sound wave due to the ambulance?
Smoke particles in the air typically have masses of the order of 10 to 16 kg. The Brownian motion (rapid, irregular movement) of these particles, resulting from collisions with air molecules, can be observed with microscope.
question1consider a simple pendulum consisting of a point mass m attached to the end of a mass less rod. the pendulum
A Sphere on a Horizontal Surface starts from Rest. If the Force is applied facing to the Right at the Top furthest Point of the Sphere from the Horizontal Surface, the Sphere will start experiencing Roll and Slip at the same time. In which directi..
A 1.15 long ramp is inclined at 14 to the horizontal. A solid ball is released from rest at the top of the ramp. Find its translational acceleration
a mass M is hanging from two strings. There is a tension of 34 N in the string on the left and a tension of 24 N in the string on the right. How heavy is the object
A proton is at the origin and an electron is at the point x = 0.42 nm, y = 0.39 nm. Find the electric force on the proton
A Carnot engine operating between a warmer unknown temperature and a reservoir of boiling helium at 1.76 K has an efficiency of 59% What is the warmer temperature
A hand grenade is thrown with a speed of v0 30 m/s, and a 60 degree angle with x-axis, just prior to exploding. Find the velocity of the other piece after the explosion
The most abundant isotope of lithium, Li-7, contains three protons and four neutrons and has a mass of 7.01600 u. What is the mass defect for this nucleus in atomic mass units
Is it safe to use zero for the initial velocity in equations?
The electric output of a power plant is 730MW . Cooling water flows through the power plant at the rate 1.30 ×108L/hr. What is the power plant's thermal efficiency
The "reaction time" of the average automobile driver is about 0.7. Compute the total distance covered in coming to a stop after a signal is observed from an initial velocity of 14.6
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