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A cubic wooden block partially floats in a fresh water pool. The cube has side length of 10 centimeter and has a density of 800 kg/m3. Find the distance of the top surface of block from water level?
The three displacement vectors in the drawing have magnitudes of A = 4.40 m, B = 6.28 m, and C = 4.62 m. Find the resultant ((a) directional and (b) magnitude angle) of the three vectors by means of the component method. Express the directional angle..
A 7.40-nC charge is positioned 1.70 m from a 4.80-nC charge. (a) Find the magnitude of electrostatic force that one particle exerts on the other. (b) Is the force attractive or repulsive.
A steel rod with a length of l = 1.55 m and a cross section of A = 4.84 cm2 is held fixed at the end points of the rod. What is the size of the force developing inside the steel rod
An ?-particle has a charge of +2e and a mass of 6.64 10-27 kg. It is accelerated from rest through a potential difference that has a value of 1.38 106 V, What is the speed of the ?-particle
A daredevil is shot out of a cannon at 45.0° to the horizontal with an initial speed of 26.0 m/s. At what height above the cannon should the net be placed in order to catch the daredevil
Flying due east, the plane flies with the rotation of the Earth, while flying due west, it flies against the rotation. Will the flight times be the same? Different? Why?
an airplane lands with a speed of 150kmh. before landing the airplanes wheels are not rotating. the ground exerts a
The radius of the moon is 1/4 of that of the earth and its mean density is 4/5 that of the earth. Find the force of attraction of the moon
You are in charge of calibrating the radar guns for a local police department. One such device emits microwaves at a frequency of 2.00 GHz. During the trials, these waves are reflected from a car moving directly away from the stationary emitter. You ..
The Beretta Model 92S (the standard-issue U.S. army pistol) has a barrel 127 {\rm mm} long. For how long is the bullet in the barrel
A rock is thrown upward from the level ground in such a way that the maximum height of its flight is equal to its horizontal range R. At what angle is the rock thrown
question1train springnbspa number of train stations have large horizontal springs at the ends of the tracks. these are
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