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A small object is placed to the left of a convex lens and on the optical axis. The object is 53.8 cm from the lens and the focal length of the lens is 27.5 cm. What is the position of the image formed by the lens?
A metal bar, pivoted at one end, oscillates freely in the absence of a magnetic field. But, when it oscillates between the poles of a magnet, its oscillations are quickly damped. Why? (Such magnetic damping is used in a number of practical devices..
A cylindrical space station of radius R and length L has a density that varies with distance from its center, Calculate the total mass M of the entire space station
A kite is hovering over the ground at the end of a straight 44-m line. The tension in the line has a magnitude of 15 N. Find the height of the kite
The length of a beam increases by 1.26mm when its temperature is raised from 29.87oC to 71.49 oC. What is the length of the beam at the initial temperature
It walks 2.1 m along the boat toward shore and then stops. Assuming no friction between the boat and the water, find out how far the dog is then from the shore.
A vertical spring with a spring constant of 480 N/m is mounted on the floor. From directly above the spring, that is unstrained, a 0.150 kg block is dropped from rest.
At T = 0ºC and p = 1000mb, 1g of dry air receives during an isochoric process anamount of heat, what is the amount of heat absorbed
An aluminum bar of mass 2.00kg at 300 C is thrown into a lake. The temperature of the water in the lake is 15.0 C; what is the change in total entropy Delta
A bag of cement of weight 375 N hangs from three wires as suggested in Figure P5.18. Two of the wires make angles θ1 = 55.0° and θ2 = 25.0° with the horizontal. If the system is in equilibrium, find out the tensions in the wires.
A parallel plate capacitor has an electric field between its two plates of 525,000 V/m. The two plates are 2.2x10-5 m apart. find the speed of the proton when it reaches the negative plate
The frequency of light reaching Earth from a particular galaxy is 16% lower than the frequency the light had when it was emitted. What is the speed of this galaxy relative to the Earth
Calculate the wavelength ?1 for gamma rays of frequency f1 = 6.40×10^-14 Now express this gamma-ray wavelength in nanometers
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