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The near point of a naked eye is 21 cm. When placed at the near point and viewed by the naked eye, a tiny object would have an angular size of6.0 × 10-5 rad. When viewed through a compound microscope, however, it has an angular size of -7.9 × 10-3 rad. (The minus sign indicates that the image produced by the microscope is inverted.) The objective of the microscope has a focal length of 2.8 cm, and the distance between the objective and the eyepiece is 19 cm. Find the focal length of the eyepiece.
A 300-g aluminum cup contains 1000 g of water in thermal equilibrium with the cup at 65°C. At what rate is energy being removed
A marble is rolled down a ramp with a height of .15 m. The marble travels a distance of 1.38 m. What is the velocity of the marble
Jack was exposed to fast neutrons; he received a radiation dose of 280rem on part of his hand, affecting 30.0grams of tissue. What was the total energy of the radiation Jack received
A 0.9 inch tall clock is 24 cm in front of a diverging lens which has a focal length of -33.5 cm. Paying attention to sign, answer the following questions. a. What is the image distance? cm b. What is the image's height?
A computer to be used in a satellite must be able to withstand accelerations of up to 25 times the acceleration due to gravity. What is the minimum amplitude of vibration that must be used in this test
It requires 78.73 J of work to lift a rock to a height of 4.03 m. What is the mass of the rock
An electron has an initial velocity of +2.00 x 104 m/s. It enters a region of space where it experiences an acceleration of +1.50 x 104 m/s2 over a distance of 1.00 centimeter. What size force is exerted on the electron
What is the minimum coefficient of friction that will prevent sliding. What should be the highest speed of the car so it can round the curve safely.
three uniform thin rods, each of length L = 39 cm, form an inverted U. The vertical rods each have a mass of 15 g; the horizontal rod has a mass of 32 g. Elucidate what are (a) the x coordinate and (b) the y coordinate of the system's center of ma..
The middle C string on a piano is under a tension of 944N. The period and wavelength of a wave on this string are 3.82 ms, calculate the linear density of the string
A step-down transformer is used for recharging the batteries of portable devices. find the power delivered to the CD player
A plane mirror and the concave mirror (f = 8.70 cm) are facing each other and are separated by a distance of 23.0 cm. An object is placed between the mirrors and is 11.5 cm from each mirror.
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