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A piece of a cloth is found to contain 15% of the C-14 present in a similar material today. How old is this cloth? (Remember, T1/2 for C-14 is 5730 years.)
If the mass of the diver is 84 kg and the board is 1.5 m long, illustrate what is the magnitude of the torque due to gravity on the diving board with a pivot point at the fixed end of the board?
At a soft drink dispenser, a restaurant patron put 0.2 kg of crushed water ice, at a temperature of ?5 C, into an insulating cup. [In fact, the ice was slightly colder before it left the machine, but its warming to ?5 C cooled the inside surface o..
A child goes down a playground slide with an acceleration of 1.34 m/s2. Compute the coefficient of kinetic friction between the child and the slide if the slide is inclined at an angle of 34.0° below the horizontal.
A Cepheid variable has been found to have a period of 22 days, from this its luminosity is determined to be 2.8 x 1029 W, Use this information to calculate the distance to the Cepheid
A bat hits a moving baseball. If the bat delivers a net eastward impulse of 1.5 N-s, what is the mass of the ball
A water pipe is having a 2.5cm inside diameter carries water into the basement of a house at a speed of 0.90m/s, what are the speed AND water pressure at the second floor
A model airplane with mass 0.740 kg is tethered to the ground by a wire so that it flies in a horizontal circle 30.2 m in radius. Find the magnitude of the angular acceleration of the airplane
Find the smallest particle size (density 2.65 grams per cubic cm) that will be removed in a horizontal grit chamber 10 meters long and 1.0 meter deep if the flow rate is 1000 cubic meters per hour. Suppose temperature is 25 ºC.
What is the weight of the displaced amount of water when the boulder is placed inside the tank (measured in N)? The tank had an original volume of water of 5000 L. while the boulder got placed inside the tank, the volume of water rose to 5010.165 ..
A Step-Up transformer with 60 Hz AC power has an input voltage of 1000 V at a current of 2 Amperes, What is the current flowing out of the transformer
An unmarked police car travelling a constant 95 km/h is passed by a speeder travelling 145km/h. Precisely 1 s after the speeder passes, the police officer steps on the accelerator.
In the Bohr model of hydrogen, the electron moves in a circular orbit around the nucleus. Determine the angular speed of the electron
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