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Your task in physics lab is to make a microscope from two lenses.One lens has a focal length of 12 {\rm cm}, the other a focal lengthof 2.5 {\rm cm}. You plan to use the morepowerful lens as the objective, and you want its image tobe 16 {\rm cm} from the lens, as in astandard biological microscope.
-What will be the magnification of your microscope?
The volume flow rate in an artery supplying the brain is 4.00 10-6 m3/s. If the radius of the artery is 4.80 10-3 m, determine the average blood speed
what is the electrostatic force that acts on this charge. What would be the least speed required for the rest of the trip to arrive in time for the interview.
A 100 kg block is suspended from a string and immersed in water. The block has a volume of 0.02 m^3. The water density is 1000 kg/m^3. What is the buoyant force on the block
A block of weight 43.6 N is hanging from a rope. The tension from the rope is pulling upward on the block. The block is accelerating upward at a rate of 1.22 m/s^2. What is the magnitude of the tension in the rope?
Two point charges of equal mass start from rest. What is the distance between the charges and How long will it take the charges to move
A tennis player hits a ball at ground level, giving it an initial velocity of 20.0 at 53.0 above the horizontal. What are the horizontal and vertical components of the ball's initial velocity? How high above the ground does the ball go? How long does..
A hydraulic lift in a garage has two pistons: a small one of cross-sectional area 3.60cm2, If this lift is designed to raise a 3300-kg car, what minimum force must be applied to the small piston
A 0.19-kg stone is held 1.2 m above the top edge of a water well and then dropped into it. The well has a depth of 5.6 m. What is the change in gravitational potential energy of the system from release to reaching the bottom of the well
One end of a horizontal rope is attached to a prong of an electrically driven tuning fork that vibrates at a frequency 125Hz, What is the speed of a transverse wave on the rope
An electromagnetic wave has an electric field given by E? (y,t)=[ 3.60×105V/m cos(ky?(1.250×1013rad/s )t)]k^. In which direction is the wave traveling
A horse walks in a 24 ft diameter circle, making 144 trips around the circle in one hour. Using the currently accepted value of 746 watts for 1 horsepower, calculate the force in pounds with which the horse must have been pulling.
A total charge of 7.40 x 10^ -6C is distributed on two different small metal spheres. How much charge is on each sphere
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