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Water stands at depth D=35.0m behind the vertical upstream face of a dam of width W=314m. Discover the net horizontal force on the dam from the gauge pressure of the water and the net torque due to that force about a horizontal line during O parallel to the (long) width of the dam. This torque tends to rotate the dam around that line, which would cause the dam to fail. Discover the moment arm of the torque.
a steel washer is suspended inside an empty shipping crate from a light string attached to the top of the crate. the
A 0.100 kg block is suspended from a spring. When a small pebble of mass 40 gis placed on the block, the spring stretches an additional3.8 cm. With the pebble on the block, the block oscillates with amplitude of 15.0cm. (Suppose that the pebble is gl..
A dentist uses a mirror to examine a tooth that is 1.25 cm in front of the mirror. The image of the tooth is formed 5.0 cm behind the mirror. Determine the mirror's radius of curvature
An automobile and a truck start from rest at the same instant, with the automobile at first at some distance behind the truck. The truck has a constant acceleration of 2.01.
A parallel plate capacitor has plates of area 2.0*10^3 and plate separation 1.0*10^4m. find the capacitance of this system if air fills the volume between the plates.
A 2.00 kilogram stone is tied to a 0.500-m length of string and swung around a circle at a constant angular velocity of 12.0 rad/s. What is the net torque on the stone regarding the center of the circle?
Consider a non-ideal springthat exerts a force F(x)=-15.0 N/m x +3.00 N/m^2 x^2 , when it isdisplaced a distance x from its equilibrium length. Thedisplacement x is positive if the spring is stretched andnegative if the spring is compressed.
A particle of mass "m" moves in a straight line with retardation proportional to its displacement. Find the expression for loss of KE for any displacement "x"
The number of radioactive nuclei present at the start of an experiment is 4.20 *1015. Evaluate the half-life of the nuclei
A certain source of soundwaves radiates uniformly in all directions. What is the total acoustic power output of the source
A heavy sled is being pulled by two people as shown in the figure. The coefficient of static friction between the sled and the ground is ?s = 0.571, what is the sled\'s acceleration
a charge of 35.0 nc is placed in a uniform electric field that is directed vertically upward and that has a magnitude
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