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An astronomical telescope uses an eyepiece of power +80.000 D. If the length of the tube is 2.0125m, what is the magnification of the telescope?
A wave source generates circular waves that spread out from it on the surface of a pond. The wavelength of these waves is 6.00 cm. (a) At some instant a crest is passing point A.
The voltage across a membrane forming a cell wall is 74.0 mV and the membrane is 8.80 nm thick. What is the electric field strength
what the torque increase or decrease as the angle increase. Calculate the magnitude of the torque.
A heat pipe is a device developed by NASA for efficiently transmitting thermal energy while in space. A heat pipe is to be constructed using a rigid pipe with a volume of 0.0002·m3, What is the specific and total internal energy of the water
A 80 kg person sits on a 4 kg chair. Each leg of the chair makes contact with the floor in a circle that is 1.3 cm in diameter. Find the pressure in pascals exerted on the floor by each leg of the chair, assuming the weight is evenly distributed.
On a spacecraft, two engines are turned on for 658 s at a moment when the velocity of the craft has x and y components of velocity v0x = 4115 m/s and v0y =5135 m/s, Find the x and ycomponents of the craft's acceleration
A spherical water drop 2.4 µm in diameter is suspended in calm air due to a downward-directed atmospheric electric field of magnitude E = 3696 N/C.
A charge of q = +7.50 µC is located in an electric field. The x and y components of the electric field are Ex = 4.80 103 N/C and Ey = 7.40 103 N/C, respectively. (a) What is the magnitude of the force on the charge? (b) Determine the angle that th..
A generator uses a coil that has 390 turns and a 0.65-T magnetic field. The frequency of this generator is 60.0 Hz, determine the length of the wire from which the coil is made
A bullet of mass 0.018kg traveling horizontally at a high speed of 290m/s embeds itself in a block of mass 4 kg that is sitting at rest on a nearly frictionless surface.
Albert stands on a frictionless turntable, holding a bike wheel. Both Albert and the wheel are initially stationary. find the final angular momentum had by the rest of the system
A soccer ball of mass 400g is rolling at a speed of 8m/s along a flat horizontal surface. Find the rotational kinetic energy of the ball
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