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An object is located in front of a biconcave lens whose focal length is 125 centimeter. Find where is the image located? Find the characteristics, if the object distance is 25 centimeter? (Illustrate with reasonably accurate sketch).
a cement block accidentally falls from rest from the ledge of a 74.3 -m-high building. when the block is 10.6 m above
For a spherical celestial object of radius R, the acceleration due to gravity g at a distance x from the center of the object is g = g0R2/x2, where g0 is the acceleration due to gravity at the object's surface and x > R. For the moon, take g0 = 1.63 ..
A particle of charge +e is initially at coordinate z = 20 nm on the dipole axis through an electric dipole, on the positive side of the dipole. (The origin of z is at the dipole center.) The particle is then moved along a circular path around the ..
A wire 1.50 m long carrying a current of 10.0 A is at right angles to a uniform magnetic field. The force acting on the wire is 0.60 N. What is the strength of the magnetic field?
A positive charge of 0.800? C is located in a uniform field of 9.00×104 N/C. How close are the two charges
what rate must air be moving through the open window in order to keep the system in equilibrium.
A 16 cm x 16 cm square loop of wire lies in the xy-plane with its bottom edge on x-axis. The resistance of the loop is 0.490 ohms. A magnetic field parallel to the z-axis is given by B= 0.830 y^2 t, where B is in tesla, y in meters, and t in seconds...
The electric field of an electromagnetic wave in a vaccum is Ey = (25 V/m) sin ((3.78 x 10^8) x - wt), What is the wave's magnetic field amplitude
A skateboarder (whose mass is 57kg) is moving at 3.7m/s at thetop of a 5.1m ramp. Without pushing on the ground, she rolls downto the bottom of the ramp and up the next ramp which is 2.4m tall.There is an effective friction force equal to her weig..
A heater coil connected to a 240 Vrms ac line has a resistance of 34 Ohms. find min values of the instantaneous power
You are driving just behind a second car and both of you are moving at a speed 58mi/h. What is the minimum safe distance
A horizontal plank 4.00 m long and having mass 20.0 kg rests on two pivots, Find the magnitude of the force exerted on the plank by the second pivot
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