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An astronomical telescope uses an objective of power +1.280 D. If the length of the telescope is 80 centimeter, Determine power of the eyepiece and also find the magnification of the telescope?
What is the total charge of the thorium nucleus? (The neutral thorium atom has 90 electrons.), What is the magnitude of the force on an electron at that distance
Vector1 is 6.6 uits long and points along the negative x axis.Vector2 is 8.5 units long and points at +45 degrees to the positivex axis. Determine the sum of the two vectors
Calculate the force between two objects that have masses of 70 kg and 2,000 kilograms separated by a distance of 1 meter. Calculate the force between two touching grapefruits each with a radius of 0.08 meters and a mass of 0.45 kilograms.
A string is wrapped many times around a pulley and is connected to a block with mb = 4.749 kg that is hanging vertically. What is the magnitude of the acceleration of the block
A uniform thin rod of length 0.9 m and mass 2.6 kg can rotate in a horizontal plane about a vertical axis through its center. find the magnitude of the bullet's velocity just before the impact
A young woman on a skateboard is pulled by a rope attached to a bicycle. The velocity of the skateboarder is v = (4.6m/s )x, find the work the rope does on the bicycle
A cave rescue team lifts an injured spelunker directly upward andout of a sinkhole by means of a motor-driven cable. The lift isperformed in three stages, each requiring a vertical distance of15.0 m:
a spelunker is surveying a cave. she follows a passage 160m straight west then 290m in a direction 45 degree east of
The rechargeable batteries for a laptop computer need a much smaller voltage than what a wall socket provides. Thus, a transformer is plugged into the wall socket and produces the necessary voltage for charging the batteries.
A 73.0-μF capacitor is connected to a generator operating at alow frequency. The rms voltage of the generator is 3.00 V and isconstant. A fuse in series with the capacitor has negligibleresistance and will burn out when the rms current reaches 17...
A physics book slides of a horizontal tabletop wit a speed of1.10m/s. it strikes the floor in 3.50s ignore air resistance. calculate the heigth of the table top above the floor
A car is parked on a cliff overlooking the ocean on an incline that makes an angle of 25.0° below the horizontal. Find the car's position relative to the base of the cliff when the car lands in the ocean
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