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Bats emit sounds of frequencies around 35.0 kHz and useecholocation to find their prey. If a bat is moving at the speed of12.0 m/s toward an insect at an air temperature of20.0oC, (assume the insect and air are still)(a) What frequency is heard by the insect?(b) What frequency is heard by the bat from the reflectedsound?(c) Would the speed of the bat affect the answers?
question1assume a 67-kg boy and a 44-kg girl use a massless rope in a tug-of-war on an icy resistance-free surface. if
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A 0.458 kg metal cylinder is placed inside the top of a plastic tube, the lower end of which is sealed off by an adjustable plunger, what is the initial acceleration of the metal cylinder
A Carnot engine does work of 150 J per cycle. The engine operates between two reservoirs at 20 degree C and 500 degree C. How much energy is lost per cycle in its exhaust
A block of mass 1.00kg slides along a horizontal table with speed V0 = 2.50m/s. How far did the spring compress when the block first momentary comes to rest
7.84 g of argon gas at an initial pressure of 4.34 atm and at 16°C undergo an isobaric expansion until the volume has increased in five times. What is the volume of the gas after expansion
A 100 W lightbulb produces 4.0 W of visible light. What is the light intensity on a wall 3.0 m away from the lightbulb
Consider an ideal monatomic gas of 1026 atoms. What is the internal energy of this system at 27 °C? If the temperature is raised by 1 °C, by what factor does the number of accessible states increase? What is the increase in entropy in this case?
A 0.481 kg metal cylinder is placed inside the top of a plastic tube, the lower end of which is sealed off by an adjustable plunger, what is the initial acceleration of the metal cylinder
A 1.4kg grindstone in the shape of a uniform cylinder of radius 0.2m acquires a rotational rate of 1800 rev/s from rest over a 6.0 s interval at constant angular acceleration
A Dodge Caravan begins rolling from rest. Its tires undergo a constant of angular acceleration of 0.34 rad/s^2, What is angular speed of each tire after 3 revolutions
A helium-neon laser of = 633 illuminates a diffraction grating. The distance between the two m= 1 bright fringes is 36.0 cm on a screen 2.40 m behind the grating. What is the spacing between slits of the grating
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