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a sound wave traveling in 26 degrees C air has a pressure amplitude of 0.500 Pa. (assume that the density of air is 1.29 kg/m^3).
What is the intensity of the wave?
What intensity level in decibles does the sound in the preceding part correspond to?
An aircraft takes off at 203 km/h after accelerating from rest at 2.14 m/s2. What is the minimum runway length required
A closely wound rectangular coil of 85.0 turns has dimensions of 26.0cm by 46.0cm. estimate the average emf induced in the coil
Consider the equation for heat transfer through a wall. Based on this, describe two simple ways you could modify your home to decrease the rate at which heat is lost through your walls.
In an experiment, 300 g of aluminum (with a specific heat of 900 J/kg·K) at 100°C is mixed with 54.0 g of water (4186 J/kg·K) at 20°C, What is the entropy change of the aluminum-water system
Billiard ball A of mass = 0.130 moving with speed = 2.80 strikes ball B, initially at rest, of mass = 0.150. Consequently of the collision, ball A is deflected off at an angle of 28.0 with the speed = 2.00.
The density of the sea water is 1025 kg/m3. The density of ice is 917 kg/m3. Explain how high does the top of the ice block float above the water level?
Under certain conditions, the human body can withstand an acceleration of 10 g%u2019s. What is the net force (in Newtons) acting on a person
A 0.7 kW heater is designed to operate at 210 V. Assume that its resistance is constant. What is the power dissipated in this resistor if it operates at 120 V
A force F = 200i - 400j + FZ k N, is acting through point A(0,0,0) m. If F creates a moment component of -3000 Nm in the direction of a line passing from point B (2,4,5) m to point C(-3,6,8) m
A dielectric-filled parallel-plate capacitor has plate area of 30cm^2 and plate separation of 5mm. The capacitor is connected to a battery that creates a constant voltage of 10V. The dielectric constant is 3. All through the problem, use epsilon_0..
A hot air balloonist rises vertically with a constant velocity of 6.0 m/s and releases a sandbag at the precise instant when the balloon is 40.0 m above the ground. what is the time when the sandbag hits the ground
Helium forms a solid at low temperatures and high pressures. To maintain the order present in a solid, each atom must remain at its assigned position, Find the uncertainty in momentum of the helium atom
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