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A sailboat is traveling east at 6.4m/s. A sudden gust of wind gives the boat an acceleration a? = (0.80 m/s2, 40 ? north of east).
What is the boat's speed 6.4s later when the gust subsides?
Evaluate to what temperature must both be raised so that the brass ring will slide onto the rod? If one can cools the assembled system back to 20 celcius, what is teh stress in the brass ring?
If you charge a pocket comb by rubbing it with a silk scarf, how can you determine if the comb is positively or negatively charged.
A 70Kg diver steps off a 10 m tower and drops from rest straight down into the water. If he comes to rest 5.0 m beneath the surface, decide average resistive force exerted on him by the water.
For the situation, the magnetic field changes with time according to the expression B = (2.00t3 - 4.00t2 + 0.800)T, and r2 = 2R = 5.00 cm. (a) Calculate the magnitude and direction of the force exerted on an electron located at point P2 when t = 2.00..
An opera singer in a convertible sings a note at 600 whereas cruising down the highway at 81. What is the frequency heard by a person standing beside the road in front of car? What is the frequency heard by the person standing beside the road behi..
Law of Gravitation- Find out an expression for the magnitude of the initial velocity that a projectile should possess in order to leave the earth when air friction is neglected. The gravitational constant for g is, G = 6.67428*10^-11 m^3 Kg^-1 s^-..
Hair dryer draws a current of 9.2a. How long does it take 1.9*10^3 C of charge pass through? How many electrons does this represent.
A copper laboratory tank has a diameter of 0.48 m at 20degree celcius. what would be the new diameter if the tank is filled with 80degree celcius alcohol.
A 2000kg vehicle is travelling down the road at 20m/s (45 mph) when it reaches an intersection. Between rubber and dry asphalt, the coefficient of friction is 0.80. What is the minimum distance necessary for the car to stop.
Two objects have masses m and 5m respectively.They both are placed side by side on a frictionless inclined plane and allowed to slide down from rest.
A vertical container with base area measuring 16 cm by 18 cm is being filled with identical pieces of candy, each with a volume of 50 mm3 and a mass of 0.020g. Suppose that the volume of the empty spaces between candies is negligible.
A circuit is connected in parallel with two capacitor C1=6F and C2=3F with seperate switches S1,S2 and has a voltage of 20V. capacitor C1 is first charged by closing switch S1. switch S1 is then opened , and charged capacitor is connected to the un..
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