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A slide projector needs to create a 98-cm-high image of a 2.0 cm slide. The screen is 300 cm from the slide. What focal length does the lens need? Assume that it is a thin lens. How far should you place the lens from the slide?
A wheel free to rotate about its axis that is not frictionless is initially at rest. A wheel free to rotate about its axis that is not frictionless is initially at rest
A thin rectangular plate of uniform area density ?1 = 1.14 kg/m2 has a length a = 0.540 m and a width b = 0.230 m. find the distance from the origin of the resulting plate's center of mass
for a particle in a one demention box, the ground state wave function is: psi=(2/L)^1/2 sin(piX/L), What is the probebility that the particle is in the right-hand half on the box
A stone is dropped from rest into a well. The sound of the splash is heard exactly 2.00 s later. Find the depth of the well if the air temperature is 14.0°C. meter
The work function of an element is 3.2 eV. Photons of a certain energy are found to eject electrons with a kinetic energy of 2 eV. What is the speed of the ejected electrons
A shower head has 20 circular openings, each with radius 0.80mm. The shower head is connected to a pipe with radius 1.0cm. what is its speed as it exits the shower-head openings
A rock is thrown vertically upward from ground level at time t = 0. At t = 1.9 s it passes the top of a tall tower, What is the height of the tower
Consider two widely separated conducting spheres, 1 and 2, the second having four times the diameter of the first. What is the ratio of the final surface charge density of spheres
A certain heat engine does 12.0 kJ of work and dissipates 8.00 kJ of waste heat in a cyclical process. What was the heat input to this engine
What is the terminal speed for an 79 skier going down a 36 snow-covered slope on wooden skis = 0.060? Assume that the skier is 1.8 m tall and 0.50 m wide.
A spy satellite is in circular orbit around Earth. It makesone revolution in 6.01 hours. How high above Earth's surface is the satellite
One end of an insulated metal rod is maintained at 100 degrees C , while the other end is maintained at 0 C by an ice-water mixture. Find the thermal conductivity k of the metal
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