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The microwave radiation left over from the Big Bang explosion of the universe has an average energy density of 4. 10-14 J/m3. What is the rms value of the electric field of this radiation?
Coherent light from a sodium-vapor lamp is passed through a filter that blocks everything except for light of a single wavelength. compute the wavelength of the light that falls on the slits
A small steel ball bearing with a mass of 11g is on a short compressed spring. When aimed vertically and suddenly released, spring sends the bearing to a height of 1.21 m. compute the horizontal distance the ball would travel if the same spring we..
Calculate the change in potential energy of a 86.4 kg man when he takes an elevator from the first floor to 35th floor, if the distance between floors is 4.11 m
An object is placed to the left of a convex lens and on the optical axis. calculate the magnification of the image formed by the lens
A 5100 kg iceberg with density 931 kg/m3 is afloat in seawater with density 1030 kg/m3, Find the buoyant force on the iceberg
The same activity is measured for two different isotope samples. One sample contains 0.0450 kg of (atomic mass = 230.033 937 u, t1/2 = 20.8 days). What is the mass of the second sample
A rocket is launched at an angle of 52° above the horizontal with an initial speed of 103 m/s. The rocket moves for 3s along its initial line of motion with an acceleration of 32 m/s2. At this time, its engines fail and the rocket proceeds to move..
A uniform magnetic field of magnitude B= 1.2 teslas is directed toward the bottom of the page in the -y direction as shown above. At time t=0, a proton p in field is moving in the plane of the page with a speed v0= 4 x 10^7 meters per second in a ..
A welder using a tank of volume 7.90×10?2m3 fills it with oxygen at a gauge pressure of 3.00×105Pa and temperature of 38.8?C, Initial mass of oxygen is 0.391 kg, Find the mass of oxygen that leaked out
question1the elastic energy stored in your tendons can contribute up to 35 of your energy needs when running. sports
A playground carousel is rotating counterclockwise about its center on frictionless bearings. Find the final angular speed of the carousel
What is the range of wavelengths for FM radio (88 MHz to 108 MHz), What is the range of wavelengths for AM radio
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