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A box of mass 1.1 kg slides down a frictionless slope and is stopped by a horizontal spring with a spring constant of k = 3100 N/m. The box changes height by a distance of 0.78 m during this process. If the box had an initial speed of 0.62 m/s, use conservation of energy to calculate
a) The compression in the spring, when the box comes to a halt
b) If 6.5J of work was done by friction as the box slides down the slope, what would be the compression in the spring?
Discuss the automobile of the future. Will solar energy be used? Batteries? How? Briefly mention how your answer might have been different
For the ionospheric model in Problem 7.5, calculate the differential delay at the opposite extremes of the transmitted frequency spectrum for a wave with center frequency 12.4 GHz and with a bandwidth of 400 MHz.
A metal rod 0.68m long moves with a speed of 2.0m/s perpendicular to a magnetic field. If the induced emf between the ends of the rod is 0.44V, What is the strength of the magnetic field
An inductor has an inductance of 0.015 H. The voltage across this inductor is 49 V, What is the current in the inductor
monochromatic light strikes a diffraction grating at normal incidence before illuminating a screen 2.10m away. find the distance between the two second-order maxima
The 1.48cm3 volume betweenthe plates of a 111 pF parallel-plate capacitor is filled with adielectric. The area of each plate is 0.00222 m2 and the plates are0.666 mm apart. Find the permittivity of the dielectric.
When subject to a steady acceleration of 0.800 g, the object must be located 0.600cm from its equilibrium position. Find the force constant required for the spring.
A juggler throws a ball with an initial horizontal velocityof +1.1 m/s and an initial vertical velocity of +5.7 m/s. What is its acceleration at the top of its flight path
A total charge of 1.96 μC is distributed uniformly over anentire region, giving a charge per volume of 245μC/m3. A Gaussian surface encloses 1.23μC of that charge. What is the volume of that entireregion?
A glass windowpane in a home is 0.62 cm thick and has dimensions of 1.08 m × 1.86 m. On a certain day, the indoor temperature is 27°C and the outdoor temperature is 0°C. (Assume the thermal conductivity of the glass is 0.8 J/s · m · °C.)
A prescription for a corrective lens calls for +1.50D. The lensmaker grinds the lens from a "blank" with n = 1.56 and a preformed convex front surface of radius of curvature of 40.0 cm. What should be the radius of curvature of the other surface?
Planet A and planet B are in circular orbits around a distant star. Planet A is 7.6 times farther from the star than is planet B... What is the ration of their speeds
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