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A camera's zoom lens covers the focal-length range 38mm -138mm. You point the camera at a distant object and photograph it first at 38mm and then with the camera zoomed out to 138mm .
Compare the sizes of its images on the two photos.
The drawing shows two situations in which charges are placed onthe x and y axes. They areall located at the same distance of 6.6 cm from the origin O. Foreach of the situations in the drawing, determine the magnitude ofthe net electric field at the o..
A 6kg block sits on a surface with µs=0.5 and µk=0.3. You exert a force (F) at an angle of ?=30°on this block. what is the net work done on the block over this time
A steel ball is dropped onto a concrete floor. Over and over again, it rebounds to its original height. Is the motion simple harmonic motion
A 1.00-cm-high object is placed 3.80 cm to the left of a converging lens of focal length 7.50 cm. Find the position and height of the final image
Two particles of mass m1= 2.3 kg and mass m2 = 4.0 kg that are free to move on a horizontal track are initially held at rest so that they compress a spring as shown in the figure below. The spring has a spring constant k = 395 N/m and is compressed 0..
what force is needed to pull a 150 pound sled along a horizontal surface? The coeficient of kinetic friction is 0.10 and the sled is pulled by a rope that makes the angle of 0 degree with the horizontal. There is no acceleration.
charge 1 is equal to 6.0x10^-9 C, and is located at (0.30,0) meters on xy coordinates. What is the direction the net force on the 5.0 nC charge
Runner A is at first 5.4 km west of a flagpole and is running with a constant velocity of 2.6 km/h due east. Runner B is initially 3.0 km east of the flagpole and is running with the constant velocity of 8.8 km/h due west. What would be the distance ..
The image behind a convex mirror (radius of curvature = 86 cm) is located 17 cm behind the mirror. Is the image upright or inverted
A 730-N man stands in the middle of a frozen pond of radius5.0 m. He is unable to get to the other side because of a lack offriction between his shoes and the ice. How long does ittake him to reach the south shore
A beam of neutral hydrogen atoms with a speed of 104 m/s along the x-axis enters a 1 m long region, compute The acceleration of the atoms while in the magnetic field region
q1. an airplane is flying with a velocity of 60.0 at an angle of 22.0 above the horizontal. when the plane is a
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