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Question: A flashlight on the bottom of a 4.45 m deep swimming pool sends a ray upward and at an angle so that the ray strikes the surface of the water 1.65 m from the point directly above the flashlight.
A- What angle (in air) does the emerging ray make with the water's surface?
If possible just a brief explanation how you got the answer?
An object falls off of a pier and into the ocean (sea water) where it displaces a total volume of 3.4 cubic meters of sea water. What is the buoyant force acting on the object in newtons
Find what is the output voltage of a 3.0000 Volt lithium cell in a digital wristwatch that draws 0.320 mA, if the cell's internal resistance is 1.85
A uniform steel bar swings from a pivot at one end with a period of 1.3s. How long is the bar
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An oil drop carries one excess electron and weighs 9.2 10-15 N. What electric field strength is necessary to suspend drop so it is motionless.
question a proton beam in an accelerator carries a current of 115 microa. if the beam is incident on a target how many
Jane, looking for Tarzan, is running at top speed (5.6 m/s) and grabs a vine hanging vertically from a tall tree in the jungle. Estimate how high can she swing upward
A brave but inadequate rugby player is being pushed backward by an opposing player who is exerting a force of 800 N on him. What force does the winning player exert on the ground to move forward if his mass plus equipment is 110 kg
A wheel initially rotates at 20 rad/s and decelerates at a rate of 10 rad/s2. How long does it take to come to stop
a proton is released from rest in a uniform electric field of magnitude 412 nc. a find the electric force on the
A proton moves through a magnetic field at 31.1% of the speed of light. compute magnitude of the magnetic force acting on the proton
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