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The objective lens of the refracting telescope at the Lick Observatory in California has a focal length of 57 ft.
1. What is the refractive power of this lens?
2. What focal length (mm) eyepiece would give a magnification of 1000× for this telescope?
a)What is its velocity b)The charged ion then enters a magnetic field, B = 0.20 T, perpendicular to the field. What is the radius of the particle's circular orbit in the field
A circular solenoid contains 100 turns of wire and carries a current of 2 amps. Its radius is 1 cm and its length is 10 cm. Calculate the magnetic flux through one turn of the wire
Review Interactive Solution 4.41 in preparation for this problem. A 90.0-kg baseball player slides into second base. What is the magnitude of the frictional force
The pendulum in the figure consists of a uniform disk with radius r = 15.0 cm and mass 420 g attached to a uniform rod with length L = 380 mm and mass 240 g. Calculate the rotational inertia of the pendulum about the pivot point
A simple pendulum has a mass of 0.250kg and a length of 4.00 m. It is displacedthrough an angle of 11.0° and then released. Solve this problem by using the simple harmonic motion model for the motion of the pendulum.
A uniform line of charge that is 5.00cm long has a total charge of 6.00uC. An electron is at distance of 5.00cm from one end of the charge distribution, What is the electric field at the electron
The inductance of a closely wound coil is such that an emf of3.0 mV is induced when the current changes at the rate of4.6 A/s. Calculate the inductance of the coil
a long pipe of outer radius 3.40 cm and inner radius 2.89 cm carries a uniform charge density of 2.22 mcm3. using
Two pianos each sound the same note simultaneously, but they areboth out of tune. How much time separates successive beats
An 10m, 210N uniform ladder rests against a smooth wall. The coefficient of static friction between the ladder and the ground is 0.55, and the ladder makes a 50° angle with the ground. How far up the ladder can an 850N person climb before ladder b..
a metal sphere a has charge q. two other sphere b and c are identical to a except they have zero net charge. a touches
a skateboarder starting from rest rolls down a 14.6-m ramp. when she arrives at the bottom of the ramp her speed is
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