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A car moves along an x axis through a distance of 910 m, starting at rest (at x = 0) and ending at rest (at x = 910 m). During the first 1/4 of that distance, its acceleration is +6.25 m/s2. During the next 3/4 of that distance, its acceleration is -2.08m/s2. What is (a) its travel time during the 910 m and (b) its maximum speed?
Each plate of a parallel-plate capacitor is a square of side 3.17 cm and the plates are separated by 0.551 mm. Find the electric field strength inside the capacitor
X-rays having an energy of 280 keV undergo Compton scattering from a target. The scattered rays are detected at 36.0° relative to the incident rays. Find the Compton shift at this angle
Estimate the change in the Earth’s gravitational dipole moment, with respect to the Earth’s center, if the polar ice caps were to melt.
Oil - 40% efficient; CO2 Emissions (g/mol) 70 g/mol Natural gas - 23% efficient; CO2 Emissions (g/mol) 50g/mol Coal - 23% efficient; CO2 Emissions (g/mol) 90 g/mol. How much CO2 is produced per second
The pressure dissimilarity between the 4.0-cm-wide input end of a Venturi tube and the 2.0-cm-wide narrow constriction is measured by the difference in level of a water column in a glass U-tube, and found to be 12.7 cm.
An airplane has an air speed of 125 mph and an apparent heading due south (the nose of the plane is pointed south). Find the ground speed of the airplane and its heading relative to the earth
The 5*10^6 solar mass black hole at the center of the galaxy may have gained its first million solar masses in the first billion years of the milky ways existence. How much mass must it have absorbed on average each year since then to reach 5 million..
A wire has a resistance of 22.9 ohm. It's melted down, and from the same volume of metal a new wire is made that is four times longer than the original wire. Find what is the resistance of the new wire
At t = 0 the current to a dc electric motor is reversed, resulting in an angular displacement of the motor shaft given by ?(t) = (240 rad/s)t ? (21.0 rad/s2)t2 ? (1.60 rad/s3)t3. At what time is the angular velocity of the motor shaft zero
The same force that gives the standard 1 kg mass an acceleration of 1.00 m/s2 acts first on body A, Find the acceleration produced when A and B are attached
A small box of mass m1 is sitting on a board of mass m2 and length L . The board rests on a frictionless horizontal surface
a 3-g bullet flying at 420 ms hits a 2.2-kg aluminum block and embeds itself in the aluminum. after everything has come
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