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A bat moving with speed of 3.25 m/s and emitting sound of 35.0 kHz approaches a moth at rest on a tree trunk. (a) What frequency is heard by the moth? (b) If the speed of the bat is increased, is the frequency heard by the moth higher or lower? (c) Calculate the frequency heard by the moth when the speed of the bat is 4.25 m/s.
Find out the gravitational potential energy of the child-Earth system relative to the child's lowest position at the following times.
The brakes of a truck cause it to slow down by applying a retarding force of 7350 N to the truck over a distance of 1090 m. What is the work done by this force on the truck
the blood plays an important role in removing heat from th ebody by bringing the heat directly to the surface where it can radiate away. nevertheless, what is the thermal conductivity of this persons skin
A sample is bombarded by incident X-rays, and free electrons in the sample scatter some of the X-rays at an angle of -0= 122.0 degrees, Determine the wavelength (in nm) of the incident X-rays
A spring with spring constant k stands vertically, and a massm is placed on top of it. The mass is gradually lowered toits equilibrium position. How many times does the mass oscillate back and forthbefore coming to rest
A bungee jumper has a mass of 68 kg. If he jumps off a bridge that is 200. m high and uses a bungee cord that is 75 m long with a spring constant of 20. N/m
An airplane, traveling at a constant speed of 50 m/s, is executing a horizontal turn. if the plane is banked at theta = degrees, when the pilot experiences only a normal force on the seat of the plane, determine the radius of curvature of p of the tu..
A sinusoidal wave is traveling on a string with speed 5.0 cm/s. The displacement of the particles of the string at x = 30 cm is found to vary with time according to the equation y = (5.0 cm) sin[12.0 - (2.0 s-1)t]. what is the frequency of the wav..
A spring (spring constant = 80.0 N/m) is mounted on the floor and it oriented vertically. A 0.600-kg block is placed on top of the spring and pushed down to start it oscillating in simple harmonic motion. The block is not attached to the spring.
The supertanker Globtik London has a mass of 220,000 metric tons when empty and it can carry up to 440,000 metric tons of oil when fully loaded. What is the draft of the fully loaded tanker
A mass m = 17.0 kg rests on a frictionless table and accelerated by a spring with spring constant k = 4047.0 N/m. The floor is frictionless except for a rough patch. For this rough path, the coefficient of friction is ?k = 0.42. The mass leaves th..
A parallel plate capacitor has square plates with sides of length 14 cm. The distance between the plates is 2 mm. How much energy is stored in the capacitor now
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