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you have encouraged your little sister, who has just gotten glasses for her severe near-sightedness, to give you those glasses so you can play with them. You know from the prescription of the optometrist that each lens is of -6.00 diopters in strength. You then hold the glasses at arms length and playfully look through them at your sister's face when it is 495.0 mm on the other side of the glasses.
a) How far from the glasses, in mm, will your sisters's face appear to be? (In your answer, ignore sign conventions about distance of images from lenses.)
b) If your sister's face is 180. mm-tall, how tall will it appear to be in the image (in mm)?
A system consists of 3.0 kg water at 80 degrees Celsius 30 J of work is done on the system by stirring with a paddel wheel, What is the change in internal enery of the system
Two 4.4 cm× 4.4 cm metal plates are separated by a 0.19-mm-thick piece of Teflon, What is the maximum potential difference between the disks
A small object of mass 0.0150kg & a charge of 3.1 uC hangs fromthe ceiling by a thread. A second small object, with a charge of4.2 uC, is placed 1.2m vertically below the first charge. Find a) the electric field at the position of the upper charge..
At the end of an amusement park ride, you want the gondola to stop without the acceleration exceeding 2 g's. determine the maximum allowed braking force
A 9 V battery is rated at 80 Ah. It can deliver a current of 80 A for one hour, or a current of 40 A for 2 hours, etc. What is the total energy stored in the battery
A somewhat longer cable replaces the old and is attached to the steel bar 5 m from its upper end, connecting to the same place on the wall as before and maintaining the same angle between the bar and the wall.
A 4.1×104 locomotive, with steel wheels, is traveling at 7.0 on steel rails when its engine and brakes both fail. How far will the locomotive roll before it comes to a stop
A 0.24 kg blob of clay is thrown at a wall with an initial velocity of 23 m/s. what is the average force experienced by the clay
A rectangular container measuring 23 cm 51 cm 65 cm is filled with water. What is the mass of this volume of water in kilograms and grams.
With light from a gaseous discharge tube incident normally on a grating with slit separation 1.92 ?m, Compute the wavelength of the light
A 10 kg crate (begins 3m off the ground) slides along a smooth horizontal frictionless surface at a constant speed of 4 m/s. What is the kinetic energy as it slides on the upper surface
find the final temperature when 1000 g of water at 20 celcius in a 125 g copper calorimeter is mixed with 50g of steam originally at 153 celcius.
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