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An eagle with 1.8m wingspan flaps its wings 21 times per minute, each stroke extending from 42%u2218above the horizontal to 42%u2218 below. Downward and upward strokes take the same time.
a. On a given downstroke, what's the average angular velocity of the wing?
b. What's the average tangential velocity of the wingtip?
However, the current begins to decrease as the resistive element warms up. When the toaster reaches its final operating temperature, the current has dropped to 1.53 A.
A 27 pound meteorite struck a car, leaving a dent 21 cm deep in the trunk. If the meteorite struck the car with a speed of 500 m/s, what was the magnitude of its deceleration, assuming it to be constant.
The jumping squirrel. A squirrel wants to jump from a point A on a branch of a tree to a point B on another branch. at what angle to the horizontal should he jump
Two large parallel plates stand side by side with a distance of 2.10 cm between them, Find the acceleration of the electron, Find the magnitude and direction of the electric field in the region between the plates
A heavy stone of mass m is hung from the ceiling by a thin 8.25-g wire that is 65.0 cm long. When you gently pluck the upper end of the wire, What is the mass m of the stone
A plane flies 429 km east from city A to city B in 45.0 min and then 969 km south from city B to city C in 1.40 h, find its average speed (in km/h)
A computer hard drive typically operates with a rotation speed of 7200 rpm (revolutions per minute). What is the angular acceleration of the drive
An electromagnetic plane wave at a certain location has an electric field pointed up which is given as a function of time as E = 54 V/m × sin (6x106 Hz × t). how much energy does the foil absorb
In a mass spectrometer, a singly charged ion having a particular velocity is selected by using a magnetic field of 0.10 T , What is the mass of the ion
A weather balloon filled with helium gas has a volume of 279 m3, What is the new volume of the balloon
You can hear beats when two tuning forks are sounded together. The tuning forks have labels showing them to be 242 Hz and 248 Hz frequencies
An aluminum sphere is 5.50 cm in radius. What is its volume expansion coefficient if it increases in volume 2.00 cm3 when heated from 100 oC to 151oC
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