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Two forces, of magnitude F1=50.0 N and F2=22.0 N, act in opposite directions ona block which sits atop a horizontal frictionless surface as shown. Initially, the center of the block is at position xi=-4.00 cm. At some later time, the block has moved to the right, and its center is at position xf=+6.00 cm. a) What is the work done by force F2 as the block moves from x=xi to x=xf? b) What is the change in the block's kinetic energy as it moves from x=xi to x=xf?
A baking dish is removed from a hot oven and placed on a coolingrack, What was the net radiant power of the baking dish when it was first removed from the oven
The aluminum bomb has a mass of 0.725 kg and is placed in 2.6kg of water contained in an aluminum calorimeter cup of mass 0.624 kg. The initial temperature of the mixture is 15°C, and its temperature after ignition is 53.5°C.
Sunlight is used in a double-slit interference experiment. The fourth-order maximum for the wavelength of 470 nm occurs at an angle of θ = 90°. Thus, it is on the verge of being eliminated from the pattern since θ cannot exceed 90°.
Another car engine has the same efficiency as the car in the above example. How much work does the engine do in its environment
In the high jump, Fran's kinetic energy is transformed into gravitational potential energy without the aid of a pole. Estimate with what minimum speed must Fran leave the ground
An airplane, diving at an angle of 57° with the vertical, releases a projectile at an altitude of 750 m. What is the speed of the aircraft
A 1.0 mCi source of Phosphorus called P-32, a beta emitter, is imlanted in a tumor where it is to administer 36 Gy. The half-life is 14.3 days and 1 mCi delivers about 10 mGy/min/ Approximately how long should the source remain implanted?
A series of circuit consisting of an unchanged 2 µF capacitor and a 10 MW resistor is connected across a 100 Volt power source. Calculate the current in the circuit and the charge on the capacitor
A ray of light strikes the midpoint of one face of an equiangularglass prism, at an angle of incidence of 30 degrees. find the angles of incidence and refraction at each surface
When a cold front passes a station in the Northern Hemisphere, the wind shifts in a clockwise manner. Explain how would the winds shift during the passage of a cold front in the Southern Hemisphere
A crate of eggs is located in the middle of the flat bed of a pickup truck as the truck negotiates a curve in the flat road, how fast can the truck be moving without the crate sliding
You throw a ball toward a wall at speed 39.0 m/s and at angleθ0 = 37.0° above the horizontal (Fig. 4-35).The wall is distance d = 19.0 m from the release point ofthe ball.
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