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To focus a camera on objects at different distances, the converging lens is moved toward or away from the film, so a sharp image always falls on the film. A camera with a telephoto lens (f = 220 mm) is to be focused on an object located first at a distance of 3.40 m and then at 52.3 m. Over what distance must the lens be movable?
What is change in the car's kinetic energy KEf - KEo from A to B. How fast will the father be moving.
A block with mass m = 19.0 kg slides down an inclined plane of slope angle 17.8 ° with a constant velocity. It is afterwards projected up the same plane with an initial speed 1.35 m/s. How far up the incline would the block move before coming to rest..
The expected and the actual rate of return on plan assets for 20X9 was 10%. There are not other components of Loch's pension expense. Illustrate what amount should Loch report in its December 31, 20X9 balance sheet as prepaid pension cost?
A large capacitance of 1.80 mF is needed for a certain application, Calculate the volume of Teflon alone in the capacitor
Describe the displacement of the airplane when the radar was tracking it-RBA=RB-RA. What are the components of RBA.
Two positive point charges are a fixed distance apart. The sum of their charges is QT. What charge should each have in order to (a) maximize an electric force between them, and (b) minimize it.
A 60.0 resistor is connected in parallel with a 116 resistor. This parallel group is connected in series with a 20.0 resistor. The total combination is connected across a 15.0 V battery.
What should the charge (sign and magnitude) of a particle of mass 1.44 be for it to remain stationary when placed in a downward-directed electric field of magnitude 630 ? Use 9.81 for the magnitude of the acceleration due to gravity.
A block of mass m = 4.2 kg, moving on a frictionless surface with a Vi=2.9m/s speed makes a perfectly elastic collision with a block of mass M at rest. After the collision, the 4.2 block recoils with a speed of 0.9m/s. The mass M is closest to.
A flywheel in a motor is spinning at 560 when a power failure suddenly occurs. The flywheel has mass 40.0 and diameter 75.0. The power is off for 34.0, and during this time the flywheel slows down uniformly due to friction in its axle bearings. Durin..
A proton has a kinetic energy of 8.5 MeV. If its momentum is measured with an uncertainty of 4.0%, what is the minimum uncertainty in its position
Megan's mass is 28kg. She climbs the 4.8m ladder of a slide and reaches a velocity of 3.2m/s at the bottom of the slide. How much work was done by friction on Megan? Assume that air resistance is negligible.
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