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A certain LCD projector contains a single thin lens. An object23.5mm high is to be projected so that its image fills a screen1.87m high. The object-to-screen distance is3.05m.
(a) Determine the focal length of the projection lens.(b) How far from the object should the lens of the projector be placed in order to form the image on the screen?
A person takes a trip, driving with a constant speed 90 km/h except for a 15 minute rest stop. If the person's average speed is 45 km/h, how far does the person travel
A 5.57-g bullet is moving horizontally with a velocity of +344 m/s, where the sign + indicates that it is moving to the right (see part a of the drawing). The bullet is approaching two blocks resting on a horizontal frictionless surface. Air resis..
At point A , 5.0m from a small source of sound that is emitting uniformly in all directions, the intensity level is 56.0 dB, obtain the intensity of the sound
Particle X has a speed of 0.750c and a momentum of 5.78E-19kg*m/s. What is the total energy of the particle
In this section assume the temperature is 20unless directed otherwise. A submarine 79 deep emits a sonar (sound) wave. How deep is the ocean at that point
Two coils are close to each other. The first coil carries a current given by I(t) = 4.70 e%u22120.025 0tsin(120%u03C0t), What is the mutual inductance of the coils
A 540 g ball swings in a vertical circle at the end of a 1.2 m-long string. When the ball is at the bottom of the circle, What is the speed of the ball at that point
two identical charged objectsare hanging from 26.8 cm threads from the same point on the cieling. what is the charge on each object
A beam of neutrons that all have the same energy scatters from the atoms that have a spacing of 9.30×10^?2nm in the surface plane of a crystal
Zinc has a work function of 4.30 eV. A 4.80 eV photon strikes the surface and an electron is emitted. What is the maximum possible speed of the electron
Radiation from the nearby star Alpha Centauri is observed to be reduced in wavelength (after correction for Earth's orbital motion) by a factor of 0.999933. What is the recession velocity (direction) of Alpha Centauri relative to the Sun
A charge of 15.0 uC is plaed at the center of a cube. Each side of the cube has an area of 4.50 cm^2 calculate The total electric flux passing through the surface of the cube
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