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You are in a laboratory and investigating properties of a converging lens. You place a screen 80 cm away from the object and adjust the location of the lens until you see on the screen an image, which is three times larger than the object.
Calculate how far the image is from the lens.
You have a wire of length L = 1.9 m for making a square coil of a dc motor. The current in the coil is I = 1.6 A, Find the maximum torque exerted on the coil
The potter can stop the wheel in 7.0 s by pressing a wet rag against the rim and exerting a radially inward force of 68 N. Find out the effective coefficient of kinetic friction between the wheel and the wet rag.
A model rocket is launched straight upward with an initial speed of 47.8m/s. It accelerates with a constant upward acceleration of 2.07m/s2 until its engines stop at an altitude of 157 m. What is the maximum height reached by rocket.
Two narrow paralle slits illuminated by tellow light with a wavelength of \lambda = 600 nm produce fringes with a separation of 0.50 mm on a screen 2m away,
Turner's treadmill starts with a velocity of ?3.5 m/s and speeds up at regular intervals during a half-hour workout. What is the average acceleration of the treadmill during this period
A metal rod with a length of 26.0cm lies in the xy-plane and makes an angle of 34.5? with the positive x-axis, What is the magnitude of the emf induced in the rod
A 1-cm-thick layer of water stands on a horizontal slab of glass. What is the maximum angle of incidence for which the light ray can emerge into the air above the water
A person with a weight of 273.6 lb stands on two feet with their weight equally distributed between the two shoes, What is the pressure on each shoe independently
An electron travelling east with velocity 7.0 x10^5 m/s enters the same electric field region as in the previous problem. How far does it go before being turned backward
High-speed stroboscopic photographs show that the head of a 200-g golf club is traveling at 45 m/s just before it strikes a 46-g golf ball at rest on a tee. Find the speed of the golf ball just after impact
An astronomical telescope is designed with an overall magnification of 80x. The objective has a focal length of 98.0 cm. How far should the eyepiece be from the objective
Write a paper follow below instructions: -the three classes of pumps which are, positive displacement, momentum transfer and entrapment
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