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Q1. Every day our Earth receives 1.55×1022 J energy from the Sun. If we were able to use 0.85 percent of this energy to accelerate spaceships, then how various missions will be possible in one year?
Q2. If a 90 light bulb emits 5.0 of the input energy as visible light (average wavelength 550) uniformly in all directions, approximation how many photons per second of visible light will strike the pupil (4.0 diameters) of the eye of an observer 3.0 away?
From a cliff that is 9.4 m above a lake, a young woman (mass 44 kg) jumps from rest, straight down into the water. At the instant she strikes the water, what is her de Broglie wavelength.
After the first spring compresses a distance of 32.1 cm, the second spring acts with the first to increase the force as additional compression occurs. The car comes to rest 47.0 cm after first contacting the two-spring system. Find the car's initi..
A thin rod L meters long has a linera density that varies as \(\rho (x) = \rho_{0} e^{-ax}\). Find the mass of the rod
he box is taken up a mountain where the air pressure outside the box is 8.00 104 Pa. The inside of the box is completely evacuated. Illustrate what is the magnitude of the force required to pull the lid off the box?
Light shines through a single slit whose width is 5.6 104 m. A diffraction pattern is formed on a flat screen located 4.0 m away. What is the wavelength of the light
A photon of energy E collides with an electron at rest. Calculate the maximum amount of energy Ek that may be transfered to the electron. Make a graph of Ek versus E, labeling the scale in electron volts.
A defibrillator passes a brief burst of current through the heart to restore normal beating. In one such defibrillator, What is the initial current through the patient
A long, solid insulating cylinder of radius R = 1 mm has a uniform volume charge density and a total linear charge density of lambda = 3.6X10^9 C/m. what is its speed just before it impacts the surface
A particular atomic energy state is characterized by a principle quantum number n = 4. How many orbital subshells are possible
A flashlight bulb with a potential difference of 6.0 V across it has a resistance of 8.5 W. How much current is in the bulb filament
Two point charges Q1, and Q2 are place exactly on the x axis at -x1. A second particle Q2 is placed at +x2 on the positive x axis. What is the total E field at the origin
A parallel-plate capacitor is constructed with circular plates of radius 5.5×10?2m . The plates are separated by 0.23mm, Find the value of the dielectric constant, ?.
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