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Suppose you drop a feather and a steel ball of equal masses (0.010 kg) at the same time from a height of 1.9 m and you are told that the feather hits the floor 4.5 s after the steel ball.
A. Estimate the value of the terminal velocity of the feather in air.
B. Estimate the feather's drag coefficient.
By how much does the carrier lengthen. what is the magnitude of his average velocity for the 200.
One way to measure on another planet or moon by remote sensing is to measure how long it takes an object to fall a given distance. A lander vehicle on a distant planet records the fact that it takes 3.17 for a ball to fall freely 11.26.
What is this value? In this state, the interference pattern still appears showing that each individual electron can interfere with itself.
On a spacecraft two engines fire for a time of 578 s. One gives the craft an acceleration in the x direction of ax = 5.33 m/s2, Calculate the magnitude of the initial velocity
An object is initially placed on the optical axis 21.2 cm to the left of a convex lens that has a focal length of 13.7 cm. what is the new image distance
An aluminum-alloy rod has a length of 10.009 cm at 16.200°C and a length of 10.021 cm at the boiling point of water. compute the length of the rod at the freezing point of water
A horizontal 790-N merry-go-round of radius 1.20 m is started from rest by a constant horizontal force of 45 N, Find the kinetic energy of the merry-go-round after 5.0 s
A 10.60 weather rocket generates a thrust of 220. The rocket, pointing upward, is clamped to the top of the vertical spring. The bottom of the spring, whose spring constant is 450, is anchored to the ground.
A dish antenna with a diameter of 22.8 m receives (at normal incidence) a radio signal from a distant source, find the intensity of the radiation received by the antenna
A 2-slit experiment is performed with light of wavelength 589nm. Fringes are measured on a screen 1.50m away from the slits, What is the separation between the slit
Suppose one gallon of gasoline produces 1.1 x 10^8 J of energy, and this energy is sufficient to operate a car for twenty miles. how many miles could the car go with that energy
A juggler throws a ball straight up with some initial velocity. Half a second later, the juggler throws another ball straight up from the same height, then what is the initial velocity of each ball
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