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In a slide or movie projector, the film acts as the object whose image is projected on to the screen. A 105 mm focal length lens is to project an image on a screen 6.5 m away.
1. Decide how far from the lens the slide must be
2. Of the slide is 36 mm wide, how wide will the picture be on the screen?
A projectile is fired at 60.0 o above the horizontal. Its initial speed is equal to 150.0 m/s. Like most problems in this class (2010), ignore the effects of air unless told otherwise
10.5 g of copper metal is heated to 100 degrees C. The copper is then placed into a cup that contains 25 g of tap water, Find the specific heat of copper
What is the threshold energy for this reaction to occur
A laser beam is incident at an angle of 29.2° to the vertical onto a solution of corn syrup in water. what is the index of refraction of the syrup solution
A 9.5-kg monkey is hanging by one arm from a branch and is swinging on a vertical circle. Find the magnitude of the tension in the monkey's arm
The disk in a hard drive in a desktop computer rotates at 7200 rpm. The disk has a diameter of 5.1 in (13 cm). What is the acceleration of this point on the disk
Total required annual electrical energy output from the wind farm =120 TJ Max number of turbines for which there is space on the farm =20.
Four identical charges (+1.7 %u03BCC each) are brought from infinity, compute the electric potential energy of this group
a block is at rest on the incline shown in the figure. the coefficients of static and kinetic friction are mus 0.75
Which of the following statements explains weather?
A concert loudspeaker suspended high off the ground emits 32W of sound power, What is the sound intensity level at the position of the microphone
Three pendulums with strings of the same length and bobs of the same mass are pulled out to angles q1, q2 and q3 correspondingly and released. The approximation sin q = q holds for all three angles, with q3 > q2 > q1. How do angular frequencies of th..
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