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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 64.0° 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 1.80 m above the water surface, the fish is 1.40 m below the surface, and the spear travels in a straight line all the way to the fish.
According to a report on traumatic brain injury, the force that a professional boxer's fist exerts on his opponent's head is equivalent to being hit with a 5.9 kg bowling ball traveling at 8.9 m/s that stops in 0.018s
A 2.1-kg block is released from rest and allowed to slide down a frictionless surface and into a spring. The far end of the spring is attached to a wall, as shown. The initial height of the block is 0.36 m above the lowest part of the slide and the s..
The cyclist speeds up to a cadence of 120 (120 rotations per minute) in a surge lasting 30 seconds. What is the magnitude of angular acceleration of the wheel
A microscope has an objective lens with a focal length of 11.0 mm . A small object is placed 0.60mm beyond the focal point of the objective lens. What is the magnification of the real image
Two identical closely spaced circular disks form a parallel-plate capacitor. What are the diameters of the disks
When one gallon of gasoline is burned in a car engine, 1.19 x 108 J of internal energy is released. how many miles can the car travel on one gallon of gas
An object with a mass of 500g is attached to a spring. The system is moving in simple harmonic motion with an amplitude of 0.020m, What is the frequency of the system
A syringe has an area of 0.7 cm2 at its barrel and then narrows down to an area of 0.14 mm2 at the needle end. If a force of 5.4 N is applied to the syringe, what is the force produced at the tip of the needle?
consider the following situation. a block of mass 20 kg is initially at rest on an inclined that makes an angle of 37
A 2.0 kg ball is attached to a vertical post with two strings, one 2 m long and the other 1 m long. If the ball is set whirling in a horizantal circle, find the tension on each string
A child has a temperature of 101F. If her total skin area is 18 m2, find the energy loss per second due to radiation, assuming the emissivity is 1
An unstable particle is at rest and suddenly breaks up into two fragments. No external forces act on the particle or its fragments. What is the velocity of the more massive fragment
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