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Q. An elevator motor lifts a 600 kg elevator a height of 85 m in 184 s at constant speed. How much power must the motor supply?
Q. A small block of mass m = 1.5 kg slides, without friction, along the loop-the-loop track shown. the block starts from the point P a distance h = 54.0 m above the bottom of the loop of radius R = 17.0 m. What is the kinetic energy of the mass at the point A on the loop?
What are magnitude and direction of net electrostatic force
What is the electric field strength at midpoint between two disks.What is the electric field strength a point on axis 5.0 cm from one disk between them.
You are asked to design a parallel-plate capacitor having a capacitance of 1 F and a plate separation of 1.00 mm. compute the required surface area of each plate. Is this a realistic size for a capacitor.
What is the magnitude of the force applied throughout this time? What is the direction of the force applied throughout this time?
A grating with 504 lines/mm is illuminated with light of wavelength 305 nm. What is an angular separation between the two lines formed in order m = 2.
Electron microscopy has proved invaluable for investigations of viruses, cell membranes and subcellular structures, bacterial surfaces, visual receptors, chloroplasts, and the contractile properties of muscles. The "lenses" of an electron microsco..
The heels on a pair of women's shoes have radii of 0.42cm at the bottom. If 32 percent of the weight of a woman weighing 580N is supported by each heel, find the stress on each heel.
A 2.16 kg block on a horizontal floor is attached to a horizontal spring that is initially compressed 0.0320 m. The spring has force constant 840 N/m.
Coherent light from a sodium-vapor lamp is passed through a filter that blocks everything except for light of single wavelength. It then falls on two slits separated by 0.410 . In resulting interference pattern on a screen 2.10 away, adjacent bri..
Two meteoroids are heading for earth. Their speed as they cross the moon's orbit is 2.3 km/s. The second meteoroid misses for earth by 2680 km. What is its speed at its closest point.
What is the physics behind everyday sayings
A 400 kg car sits 2 m to the right of a fulcrum assume car is on a weightless rod, how far to the left of the fulcrum should an effort of 200 N be applied to keep the system in quilibrium.
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