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What is the displacement amplitude of sound with frequency f = 1.5 kHz and intensity level = 90 dB. Take the speed of sound to be v = 340 m/s and the density of air to be = 1.3 kg/m3.
A 100 g aluminum calorimeter contains 250 g of water. The two substances are in thermal equilibrium at 10°C. Determine the specific heat of the unknown second sample
A person's left eye has a near point of 18.0 cm and a far point of 2.50 m. What power contact lens would you recommend
A straight wire segment 4 m long makes an angle of 30° with a uniform magnetic field of 0.37 T. Find the magnitude of the force on the wire
A player bounces a 0.45 kg soccer ball off her head, changing the velocity of the ball from vector v i = (8.6 m/s)x + (-2.1 m/s)y to vector v f =(5.8 m/s)x + (3.4 m/s)y hat. What is the magnitude of the impulse delivered to the ball
A 5.00 x 10^4 kg space probe is travelling at a speed of 14000 m/s through deep space. Retrorockets are fired along the line of motion to decrease the probe's speed. The retrorockets generate a force of 4.00 x 10^5 N over a distance of 2600 km. What ..
A binary star in the constellation Orion has an angular separation between the stars of 10^-5radians. if lambda=500nm, what is the smallest aperture (diameter) telescope
The resistance of a conductor is 19.2 ohms at 1.50 degress C and 25.0 ohms 91.0 degress C. What is the temperature coefficient of the resistance
A uniform electric field of magnitude 405 N/C pointing in the positive x-direction acts on an electron, which is initially at rest. The electron has moved 2.60 cm. What is the work done by the field on the electron?
Estimate the spacing between the two irrandiance maxima closest to the geometric of a plain wave illuminated straightedge if the source distance is 10.0 cm and the observation distance is 20.0 cm. Assume wavelength=632.8 nm.
A loop of diameter d = 12 cm, carrying a current I = 0.4 A is placed inside a magnetic field B = (0.2 T) i^+ (0.4 T) j^. What is the potential energy of the loop
The Achilles tendon is subjected to a large tension stress that results in a strain of 5%. how much does it elongate as a result of this strain
An object of mass 3.02 kg, moving with an initial velocity of 4.95 J m/s, collides with and sticks to an object of mass 2.67 kg, Find the final velocity of the composite object
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