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Q. An object weighing 323-N in air is immersed in water after being tied to a string connected to a balance. The scale now reads 289-N. Immersed in oil; object weighs 300 N. compute the density of the object.
Q. The loaded cab of an elevator has a mass of 3000kg and moves 216-m up the shaft in 23s at constant speed. At what average rate does the force from the cable do work on cab?
A 47 g golf ball is driven from the tee with an initial speed of 50.0 m/s and rises to a height of 24.8 m.
determine the value of IG. The support at B does not move while the measurement is taken. For the calculation, the horizontal location of G should be determined.
What should be the spring constant of a spring designed to bring a 1500 car to rest from a speed of 80 so that the occupants undergo a maximum acceleration of 5.
A 1600 kg submarine rises straight up towards the surface. Seawater exerts both an upward buoyant force of 16430 N on the sub, with a downward resistive force of 1000 N. What is the submarine's acceleration.
A converging lens has a focal length of f = 29 cm. If an object is placed 40 cm from the lens, where will the image be formed.
A scuba diver at a depth of 42.0 m below the surface of the sea off shores of Panama City, where the temperature is 7 °C, releases an air bubble with volume 18 cm3.
An electron is released from rest at the negative plate of a parallel plate capacitor. The charge per unit area on each plate is = 2.6 x 10-7 C/m2, the plates are separated by a distance of 1.4 x 10-2 m. How fast is the electron moving just before..
A coil is wrapped with 309 turns of wire on the perimeter of a circular frame (of radius 50cm). Each turn has same area, equal to that of the frame.
Estimate the initial speed of that car assuming a level road.What would be the equilibrium temperature when a 252 block of copper at 275 is placed in a 136 aluminum calorimeter cup containing 807 of water at 14.90.
A 378 N, uniform, 1.56 m bar is suspended horizontally by two vertical cables at each end. Cable A can support a maximum tension of 502.0 N without breaking, and cable B can support up to 397.0N. You want to place a small weight on this bar. What is ..
An 854 kg (1887 lb) dragster, starting from rest, attains a speed of 27.1 m/s (60.7 mph) in 0.59 s.
The average intensity of sunlight at the top of the earth's atmosphere is 1390 W/m2. What is the most energy that a 30 m multiplied by 55 m solar panel might collect in one hour in this sunlight.
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