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A person with a near-point distance of 25 cm finds that a magnifying glass gives an angular magnification that is 1.5 times larger when the image of the magnifier is at the near point than when the image is at infinity. (Assume that the magnifying glass is held directly in front of the person's eyes in each case.) What is the focal length of the magnifying glass? (Include the sign.)
A puck with mass m = 0.18 kg slides along a frictionless horizontal surface at v = 6.3 m/s . It hits and sticks to the free end of a spring with k = 18 N/m, Find the period of the subsequent simple harmonic motion
If we can treat the atom as a 'box' of size 20 nm for an electron, what wavelengths could this electron have
a golf club strikes a 0.059 kg golf ball in order to launch it from the tee. For simplicity assume that the average net force applied to the ball acts parallel to the ball's motion, With what speed does the ball leave the club
the magnetic field 7.5 cm directly above the center of a 25 turn coil of radius 15cm is 0.80 mT. Find the current in the coil
A ball thrown straight up from the ground passes a window 5.6 m up. An observer looking out the window sees the ball pass the window again, going down, 2.6s later
A hole is drilled straight through the center of the planet Foosbane. The planet is remarkable in that its density is constant, independent of depth, what is the period of oscillation of the pebble
A physics student playing with an air hockey table (a frictionless surface) finds that if she gives the puck a velocity of 3.87m/s along the length ( 1.78m ) of the table at one end, What is the angle of inclination
The magnetic flux through a coil of wire containing two loops changes from -23Wb to +33Wb in 0.57s. What is the emf induced in the coil
The spring shown in the figure is compressed 50 cm and used to launch a 100 kg physics student. How far up the incline does the student go
Take the initial direction of motion to be the positive direction. (Indicate the direction of the acceleration by the sign of your reply.)
Four objects are situated along the y axis as follows: a 2.01 kg object is at +3.16 m, Where is the center of gravity of this system
A 12-V battery is connected in series with a switch, 6.0-ohms resistor and coil. What energy is stored in the coil when the current is 2.0 A
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