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The focal length of a magnifying glass is 4.5 cm.
1) To magnify an object do you place it at 3.0 cm or at 5.0from the glass?
2) If the near-point is 30 cm, find the magnification for the image at infinity
Light with ? = 760 nm is diffracted by a single slit, and the first intensity minimum (the first dark fringe) occurs at ? =3°. What is the width of the slit
A small plastic bead has been charged to -15nC, What is the magnitude of the acceleration of a proton that is 0.90cm from the center of the bead
Tarzan, who weighs 900N, swings from a cliff at the end of a 40.0 m vine that hangs from a high tree limb, What is the magnitude of the tension on the vine
An individual uses a pulley and rope to raise a 25 kg mass to a height of 2.0 m. If it takes 5.0 seconds to do this, how much power was supplied
The heating element of a clothes dryer has a resistance of 16.2. What is the current in the heating element
A 50-cm-thick layer of oil floats on a 120-cm-thick layer of water. What is the pressure at the bottom of the water layer
1. what will you do with the two disks to show that angular momentum is conserved?2. how will you determine the torque
A 17-cm-long microscope has an eyepiece with a focal length of 3.1cm and an objective with a focal length of 0.35cm. What is the approximate magnification
A 35.0 g objectconnected to a spring with a force constant of 20.0 N/m oscillates on a horizontal,frictionless surface with an amplitude of 5.00 cm. Find the total energy of the system
The maximum current in a superconducting solenoid can be as large as 3.51 kA. what is the magnitude of the magnetic field it produces
A train 389 m long is moving on a straight track with a speed of 40.6 m/s. The engineer applies the brakes at a crossing, find how long (in s) the train blocked the crossing
a 8.5 kg object undergoes an acceleration of 2.3 ms2.a what is the magnitude of the resultant force acting on it?b if
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