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A sheet of acetate paper is wrapped around a clear glass container. A thermometer is placed inside the glass container and held at a distance of 20 cm from a 100 W light bulb. Four different color acetate papers are used (red, green, blue, yellow). If each color paper is held for 45 minutes from the light source, how should the temperatures differ?
A baseball is hit with a speed of 25m/s at an angle of 45.0 degrees. what horizontal distance does it travel before it lands on the building
A test charge is located at a distance of 2.5 × 10-2 m from a charge of 6.4 × 10-5 coulombs. Find what is the electric field at the test charge
A 2.0-kg solid cylinder of radius 0.5 m rotates at a rate of 40 rad/s about its cylindrical axis. What power is required to bring the cylinder to rest in 10 s
At an outdoor market, a bunch of bananas is set into oscillatory motion with an amplitude of 26.93 cm on a spring with a spring constant of 10.7167 N/m. What is the weight of the bananas
A 120-g mug at 21C is filled with 210g of coffee at 91C. suppose all of the heat lost by the coffee is transferred to the mug, what is the final temperature of the coffee? The specific heat capacity of the mug is 7.8 X 10^2 J/(Kg C)
The displacement of a wave traveling in the positivex-direction is y(x,t)=(3.5cm)cos(2.7x?92t), wherex is in m and t is in s, What is the wavelength of this wave
The current in a 100 watt lightbulb is 0.700A . The filament inside the bulb is 0.120mm in diameter. What is the electron current in the filament
an unstrained horizontal spring has a length of 0.27 m and a spring constant of 230 nm. two small charged objects are
A 1.0 kg hollow ball with a radius of 0.08 m, filled with air, isreleased from rest at the bottom of a 2.2 m deep pool of water. How high above the water does the ball shoot upward
A 9500 line/cm grating reveals that a beam of light contains three different wavelengths. When the light strikes the grating at normal incidence, What are the wavelengths for each angle
The average density of the planet Pluto is 2357 kg/m3. The acceleration of gravity on its surface is 0.76 m/s2. Calculate the average radius of Pluto
There is a uniform charge distribution of ? = 8.12 10-8 C/m along a thin wire of length L = 5.94 cm. The wire is then curved into a semicircle that is centered about the origin, so the radius of the semicircle is R = L/?. Find the magnitude of the el..
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