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Question:
The smallest insects that a bat can detect are approximately the size of one wavelength of the sound the bat makes. What is the minimum frequency of sound waves required for the bat to detect an insect that is 0.57 cm long? (Assume the speed of sound is 340 m/s.)
A steel aircraft carrier is 364m long when moving through the icy North Atlantic at a temperature of 2.4°C. By how much does the carrier lengthen as it is traveling in the warm Mediterranean Sea at a temperature of 21° C.
An artillery shell is fired with an initial velocity of 300 m/s at 55.0° above the horizontal. What are the x- and y-coordinates of the shell
On a planet in a solar system far from ours, you release a rock from rest at a height of 12.0 m above the surface of the planet, What is the mass of the planet
two masses are separated by 3.85m. the mass of objects are 5.98kg and 7.35 kg. how far is the center of mass of the system
A belt of negligible mass passes between cylinders A and B and is pulled to the right with a force P. Cylinders A and B weigh, respectively, 5 and 16 lb. determine the angular acceleration of each cylinder
An average net force of 1.56 Newton acts on a body for 2.75 seconds. Find the average net force that would generate the same impulse if applied for just 65.0 ms (milliseconds)
A parallel plate capacitor with a plate area of 0.02 m2 and plate separation of 0.001 meter is connected to a 24 Volt battery. Find the electric field between the plates
A Carnot engine whose cold reservoir temperature is 1.0 C has a thermal efficiency of 40%. By how much should the temperature of the hot reservoir be increased to raise the efficiency to 60%?
You and your friend Peter are putting new shingles on a roof pitched at 22 degrees. If the coefficient of kinetic friction between the box and the roof is 0.54, with what speed should you push the box to have it gently come to rest right at the edg..
A bottle has a mass of 35.00 g when empty and 98.44 g when filled with water. When filled with another fluid, the mass is 88.78 g. What is the specific gravity of this other fluid
A student pushes a 60 kg couch across a carpet at a constant velocity. find the magnitude of the force of the student on the couch
A pond with a flat bottom has a surface area of 730 m2 and a depth of 2.7 m. Find the rate at which energy is transferred by conduction from the surface to the bottom of the pond
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