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Two cars start from rest at a red stop light. When the light turns green, both cars accelerate forward. The blue car accelerates uniformly at a rate of 4.1 m/s2 for 3.1 seconds. It then continues at a constant speed for 12.5 seconds, before applying the brakes such that the car's speed decreases uniformly coming to rest 196 meters from where it started. The yellow car accelerates uniformly for the entire distance, finally catching the blue car just as the blue car comes to a stop.
What is the total time the blue car is moving?
What is the acceleration of the yellow car?
What is the ratio of the dynamic viscosity of air to that of water at standard pressure and a temperature of 20?C? Find the ratio of the kinematic viscosity of air to that of water for the same condition?
A ball rolling along at speed v without slipping on a horizontal surface while it comes to a hill that rises at a constant angle above the horizontal.
A recording engineer works in a soundproofed room that is 45 dB quieter than the outside. If the sound intensity in the room is 1.30 x10-10 W/m2, what is the intensity outside.
A converging lens (f = 13.0 cm) is held 6.20 cm in front of a newspaper, the print size of which has a height of 2.20mm. Find (a) image distance (in cm) and (b) height (in mm) of the magnified print.
Chromium is produced by reacting with its oxide with aluminium. If 304 g of Cr2O3 and 108 g of Al completely react to form 204 g of Al2O3 how many grams of Cr are formed.
Parametric study on the effects of activated carbon by calcium chloride activation from bark of calamansi tree on sewage wastewater treatment.
At our distance from the Sun, the intensity of solar radiation is 1370 W/m2. The temperature of the Earth is affected by the greenhouse effect of the atmosphere.
A parallel plate capacitor has plates of area 2.0x10^-3 m^2 and a plate separation of 1.0x10^-4 m. Determine the capacitance of this system if air fills the volume between the plates.
A pulley 18 in diameter is free to rotate about the horizontal axle. A 220 mass and a 420 mass are tied to either end of a massless string, and string is hung over the pulley.
A toy car X of mass .200 kg moves along a frictionless surface with a velocity of .180 m/s. It collides with another toy car Y, with the mass .250 kg and a speed of .130 in the same direction.
what are the wavelengths of electro magnetic waves in free space that have frequencies of a) 5.00 x 10^19Hz, b) 4.00 x 19^9.
A series ac circuit is shown. The inductor has a reactance of 80 Omega and an inductance of 200 mH. A 90- Omega resistor and a capacitor whose reactance is 130 Omega , are also in circuit. The rms current in the circuit is 1.3A. What is the phase ..
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