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On a safari, you are spear fishing while wading in a river. You observe a fish gliding by you. If your line of sight to the fish is 62.0° below the horizontal in air, and assuming the spear follows a straight line path through the air and water after it is released, determine the angle below the horizontal that you should aim your spear gun in order to catch dinner. Assume the spear gun barrel is 1.60 m above the water surface, the fish is 1.10 m below the surface, and the spear travels in a straight line all the way to the fish.
A high-speed lifting mechanism supports a 780-kg object with a steel cable that is 33.0 m long and 4.00 cm2 in cross-sectional area. Determine the elongation of the cable
a solid wood door 1.04 m wide is hung in a metal door way at 0.0degc with a clearance of 2.2 mm on the side. if the
The generator in a purely capacitive AC circuit has an angular frequency of 126? rad/s and a maximum voltage of ?Vmax = 129 V. what is the RMS current in the circuit
Walking by a pond, you find a rope attached to a tree limb 6.0 m off the ground. You decide to use the rope to swing out over the pond. What is the maximum safe initial angle between the rope and the vertical so that it will not break during the swi..
The pressure in an automobile tire is usually quoted (in the United States) in pounds per square inch (lb/in2), What is the value of the gauge pressure in Pascals
In an ultrahigh vacuum system (with typical pressures lower than 10?7 pascal), find the number of molecules in a volume of 1.70 m3
A charge -Q is uniformly distributed along a circular arc of radius R beginning on the +y axis and ending on the -x axis. Find the electric potential at the origin
A rifle bullet with mass 8.00g strikes and embeds itself in a block with a mass of 0.992 kg that rests on a frictionless, Find the magnitude of the block's velocity just after impact
The unit of horsepower was defined by considering the power output of a typical horse. What power does this represent in hp
The air speed indicator of a plane that took off from Detroit reads 343 km/h and the compass indicates that it is heading due east to Boston. Calculate the speed of the plane with reference to the ground
A block of 4.4 kg is held at the top of a smooth incline. The incline has height of 2.1 m and is at an angle of 19 degrees above the horizontal. How much work was done by friction on the block
A proton accelerates from rest in a uniform electric field of 630 N/C. At some later time, its speed is 1.04 106 m/s. Find the magnitude of the acceleration of the proton
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