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On a weekend archeological dig, you discover an old club-ax that consists of a symmetrical 7.8 kg stone attached to the end of a uniform 2.0 kg stick. You measure the dimensions of the club-ax as shown in the figure: the stick is 98 cm long, and the 18 cm long stone is drilled through its center and mounted on the stick. How far is the center of mass of the club-ax from the handle end of the club-ax?
A rechargeable battery that is completey drained of electrical energy can be completed charged by applying 2 mA of current for 1.0 hour. how much energy is the battery capable of storing
The driver of a car slams on the brakes when he sees a tree blocking the road. With what speed does the car then strike
During a snowball fight, two snowballs travelling towards each other collide head-on. The first is moving east at a speed of 15.3 m/s and has a mass of 0.450 kg, What is the mass of the second snowball
A particular spring stretches 20 cm when a 500g mass is hung from it. Suppose a 2.0kg mass is attached to the string and it is displaced 40 cm from equilibrium position and released. Find the speed of the mass when x = 10 cm.
The displacement vectors 44.5 cm at 15.0° and 23.0 cm at 51.0° both start from the origin and form two sides of a parallelogram. Find the area of the parallelogram
A softball pitcher throws an underhanded pitch with the arm fully extended (straight at the elbow). Find the rotational kinetic energy of the pitcher's arm given its moment of inertia is 0.72 kg·m2
A 73.1-kN car is traveling at 70.9 mph when the driver decides to exit the freeway by going up a ramp. What is the magnitude of the average drag force exerted on the car
A slit 0.240mm wide is illuminated by parallel light rays with a wavelength 540nm. What is the distance on the screen from the center of the central maximum to the first minimum
A converging lens(f1=4 cm) is located 8 cm to the left of a diverging lens (f2= -2 cm). Find the final image formed by the 2 lens system
A small power plant produces a voltage of 6kV and 150A. the voltage is stepped up to 240kV by a transformer before it is transmitted to a substation. What is the current in the transmission line from the plant to the substation
question an object weighing 335 n in air is immersed in water after being tied to a string connected to a balance. the
You are coating a glass lens of index of refraction 1.6 with a film of material of index of refraction 1.7. What is the thickness of the film now
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