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A large 1.00 × 104 L aquariums are supported by four wood posts (Douglas fir) at the corners. Each post has a square 3.90 cm x 3.90 cm cross section and is 80 centimeter tall.
Find by how much is each post compressed by the weight of the aquarium?
a mass vibrates back and forth from the free end of an ideal spring of spring constant 20 nm with an amplitude of .3 m.
A star of mass 2.0 1028 kg that is 4.6 x 1020 m from the center of a galaxyrevolves around that center once every 4.6 x 108 years. estimate the number of stars in the galaxy
A ball of mass 0.240 grams and positive charge, q =39.3 microC, is suspended on a string of negligible mass in a uniform electric field. We observe that ball hangs at an angle of theta =15.0 o from the vertical. What is the magnitude of electric f..
Two converging lenses are placed 88.0 cm apart. An object is placed 1.100 m to the left of the first lens, which has a focal length of 27.0 cm. What is the focal length of the second lens
A generator has a square coil consisting of 600 turns. The coil rotates at 66 rad/s in a 0.32 T magnetic field. What is the length of one side of the coil
a 9.0 kg mess kit sliding on a frictionless surface explodes into two 4.5 kg parts one moving at 3.0 ms due north and
a 75 microc charge is placed 46 cm from an identical 75 microc charge. how much work would be required to move a 0.72
Find the distance point P on the tip of the blade has traveled in 3 sec. Also, find the magnitude of the acceleration of point P when t = 3 sec.
question the force but not the power required to tow a boat at constant velocity is proportional to the speed. if a
A 5 kg mass attached to a horizontal spring is pulled from its equilibrium position by 3 m and let go. what is the maximum velocity of the mass
Two small stereo speakers are 2.8 m apart and act as a double-slit interference experiment by sound waves. If the opposite wall of the room is 7.5 m away and the sound frequency is 1.4 kHz, what is the distance among the two interference maxima neare..
An Australian emu is running due east in a straight line at a speed of 17.6 m/s and slows down to a speed of 15.7 m/s in 7.7 s. Assuming that the acceleration remains the same, what is the bird's velocity after an additional 2.0 s has elapsed?
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