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A bat emits a sound whose frequency is 88.1 kHz. The speed of sound in air at 20.0 oC is 343 m/s. However, the air temperature is 42.0 oC, so the speed of sound is not 343 m/s. Assume that air behaves like an ideal gas, and find the wavelength of the sound.
An airplane flying at a constant speed of 160 m/s pulls out ofa dive in a circular arc. What is the radius of the arc
A horizontal pipeline carries 10,125 m^3 of oil every hour. Along the pipeline where the radius is 60 cm, the oil pressure is 170 kpa. The density of the oil is 800 kg/m^3. What is the oil's speed in the pipeline where the radius is 60 cm? What is th..
A sample containing beryllium (atomic mass 9 u), aluminum (27 u), and an unknown element is placed in a mass spectrometer, What is the mass of the unknown element
A 4.9 kg cart is placed on a frictionless air track with an angle of 47.6o. A 24.2 kg mass is attached to the cart using a massless string draped over the end of a frictionless pulley at the top of the track. What is the expected acceleration of the ..
A 150-g block is projected up a ramp with an initial speed of 8.1 m/s. If the ramp is inclined 28° with the horizontal, how far along the surface of the ramp does the block slide before coming to a stop
question a glass rod rubbed with silk acquires a charge of 1.0times10-9 c.1-what is the charge on the silk?2-how many
An electron is accelerated through a potential difference of 100 V, Find the radius of the circular path in which it will travel
The dipole moment of a water molecule in liquid water is 6.2×10−30 C·m, and the effective diameter of a water molecule is 2.8×10−10 m. In an earlier homework problem the effective dipole charge separation for water was calculated as 1.9×10−11 m.
A 220g ball is thrown horizontally at 19.2m/s, As it falls under the influence of gravity, find its final momentum (magnitude) after 1.00s.
A 220 g bird flying along at 6.69 m/s sees a 8.2 g insect heading straight toward it with a speed of 22.66 m/s. What is the bird's speed immediately after swallowing
A box of 300N weight is at rest at the bottom of the plank that is 5.00m long and rises 30 degrees above ground. find the velocity of the box at the top of the plank
He slides so that his speed is zero just as he reaches the base. Explain how much mechanical energy is lost due to friction acting on the runner? How far does he slide?
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