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A lens having a focal length of 30 cm is used as a simple magnifier.
a) What is the angular magnification obtained when the image is formed at the normal near point (q = -25 cm)?
b) What is the angular magnification produced by this lens when the eye is relaxed?
A projectile is fired at an upward angle of 50° from the top of a 145m cliff with a speed of 195 m/s. What will be its speed while it strikes the ground below? (Use conservation of energy.)
children sled down a 44 m -long hill inclined at 25 degrees. at the bottom the slope levels out. if the coefficient of
A 17-kg sled is being pulled along the horizontal snow-covered ground by a horizontal force of 32 N. Find the coefficient of kinetic friction between the runners of the sled and the snow
For a particular RLC series circuit, the capacitive reactance is 4.15 ?, the inductive reactance is 47.1 ?, What is the maximum voltage across the circuit
A 5.25\; kg block starts at the top of a 12.1\; m long incline that has an angle of 10\deg to the horizontal. How much Kinetic Energy was lost in the collision
An airtight box has a removable lid of area 1.11E-2 m2 and negligible weight. What is the magnitude of the force required to pull the lid off the box
what would the image distance be (pay attention to sign)? cm d. Could the new image be projected on a screen?
The pulley system is used to lift a 61 kg crate. Note that one chain connects the upper pulley to the ceiling and a second chain connects the lower pulley to the crate. The crate is rising with an acceleration of 2.4 m/s2. Assume the masses of the ch..
What process or occurrence can create magnetic fields, Explain Coulomb's Law and how it relates to electric current
A student is skateboarding down a ramp that is 8.99 m long and inclined at 24.1 ° with respect to the horizontal. The initial speed of the skateboarder at the top of the ramp is 4.77 m/s. Neglect friction and find the speed at the bottom of the ramp.
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a 50-cm x 30-cm x 20-cm block weighing 150 n is to be moved at a constant velocity of 0.8 ms on an inclined surface of
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