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The projection lens in a certain slide projector is a single thin lens. A slide 23.6 mm high is to be projected so that its image fills a screen 1.87 m high. The slide-to-screen distance is 3.08 m.
(a) Determine the focal length of the projection lens.
(b) How far from the slide should the lens of the projector be placed to form the image on the screen?
By what percent must one increase the tension in a guitar string to change speed of waves on the string from 327 m/s to 376 m/s.
25% of a radioactive material stays active after 4 hours. What is the half-life of this radioactive material
Bill measures the rate at which the clock in sam's spaceship runs and finds that it is 1/3 the rate at which the same clock runs when it is at rest
Two identical probes are sent along the same path toward a neutron star. Find the distance between the center of mass of the two probe system
A 1300- {rm N} crate slides 15- {rm m} down a ramp that makes an angle of 35^circ with the horizontal. If the crate slides at the constant speed, how much thermal energy is created.
An L-R-C series circuit consists of a 2.50?F capacitor, a 5.50mH inductor, What is the maximum current through the capacitor
This problem introduces the concept of tension. The instance is a rope, oriented vertically, that is being pulled from both ends. Let and (with u for up and d for down) represent the magnitude of the forces acting on the top and bottom of the rope..
A 0.54-kg particle has a speed of 2.0 m/s at point A and kinetic energy of 7.5 J at point B. What is its speed at point b
In a CRT tube, electrons are accelerated by a 20,000 V potential difference between the electron gun (the cathode) and the positive metal mesh 5.00 cm away. How much time does it take the electron to reach the wire mesh
it's nighttime, and you've dropped your goggles into a swimming pool that is 3.2 m deep. How far are the goggles from the edge of the pool
A hollow aluminium cylinder is to be fitted over a steel piston. At 22°C the inside diameter of the cylinder is 99.2 percent of the outside diameter of the piston. To what common temperature must the two pieces be heated in order that the cylinder ju..
One trajectory that can be used to send spacecraft from Earth to Mars is an elliptical orbit that has Sun at one focus, its perihelion at Earth, Find the semimajor axis of the ellipse
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