A 25-kg television set rests on four rubber pads, each having a height of 1.0 cm and a radius of 0.60 cm. A horizontal force is applied to the television set
When the pads are at the point of sliding, how far has the television set moved sideways? The coefficient of friction between the rubber and the floor is 1.0 and the shear modulus of rubber is 2.6 × 106 N/m2. A) 16 mm
B) 8.4 mm
C) 4.2 mm
D) 2.1 mm
E) 1.1 mm
D
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Measurements of the magnetic field of Venus reveal that the
a. planet has a large iron core. b. interior of the planet is molten. c. planet has no detectable magnetic field. d. planet rotates backwards. e. magnetic field is responsible for large auroral displays (northern lights) on Venus.
A car travels at a steady 40.0 m/s around a horizontal curve of radius 200 m. What is the minimum coefficient of static friction between the road and the car's tires that will allow the car to travel at this speed without sliding?
A) 1.23 B) 0.816 C) 0.736 D) 0.952 E) 0.662
The type of radiation affected by greenhouse gasses is
a. UV radiation. b. IR radiation. c. visible radiation. d. gamma radiation.
Capacitors in Combination: The network shown is assembled with uncharged capacitors X , Y, and Z, with CX = 8.- ?F, CY = 9.- ?F and CZ = 1.0 ?F. The switches S1 and S2 are initially open, and a potential difference Vab = 120 V is applied between points a and b. After the network is assembled, switch S1 is then closed, but switch S2 is kept open. How much charge is finally stored in capacitor Y? 
A. 110 µC B. 54 µC C. 81 µC D. 140 µC E. 160 µC