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You are designing an electro microscope capable of resolving two features separated by 1 nm. The f-number (f/D) is 100. What is the accelerating voltage required to achieve this resolution?
a particle with mass 2.30 g and charge 10.0 c enters through a small hole in a metal plate with a speed of 8.50 ms at
A uniform steel beam has a mass of 490 kg. On it is resting half of an identical beam. What is the vertical support force at each end
A car spring (lenght (0.2) m) is suspended from the ceillingof a garage . A 200kg mass is suspended from the spring which stretches an extra 0.004m . the spring is stretched slightly ( veryslightly ) further and released assume SHM and determine t..
The leg and cast weigh 220 N, with the center of mass as indicated by the blue arrow in the diagram. The counterbalance w1 weighs 135 N. find the weight w2 and the angle α needed so that no force is exerted on the hip joint by the leg plus cast.
An oak barrel with a lid of area 0.20 m2 is filled with water. A long, thin tube of cross-sectional area 5.0 X 10-5 m2 is inserted into a hole at the center of the lid, What was the net force on the lid due to the water pressure
A 1.0mL syringe has an inner diameter of 6.0mm , a needle inner diameter of 0.29 mm , and a plunger pad diameter (where you place your finger) of 1.2 cm . A nurse uses the syringe to inject medicine into a patient whose blood pressure is 140/100mmHg...
A light ray is traveling toward an interface between sapphire, n= 1.76, and water, n= 1.33. What is the critical angle for total internal reflection
A shopper walks from the door of the mall to her car 250m down the line of cars, and then turns 90 degrees to the right and walks an additional 60 meters. What is the magnitude of the displacement of her car from mall door.
A mountain climber gains 897 m in elevation on a particular hike. Consider the climber's body as a heat engine, how much heat does the food supply
A 113 gram apple falls from a branch that is 2.5 meters above the ground. Just before the impact, what is the speed of the apple
A ball of radius 0.200 m rolls with a constant linear speed of 3.60 m/s along a horizontal table. What is the angular displacement of the ball while the ball is in the air
question1a parachutist relies on air resistance mainly on her parachute to reduce her downward velocity. she and her
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