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a student measures the diameter of a small cylindrical object and gets the following readings 4.32, 4.35, 4.31, 4.36, 4.37, and 4.34cm. What is the average diameter of these readings? and what is the standard deviation of these measurements?
Calculate the rates of solar heating
Early black-and-white television sets used an electron beam to draw a picture on the screen. The electrons in the beam were accelerated by a voltage of 3.0 kV, What is the speed of electrons in the beam
What would be the equilibrium temperature when a 253-g block of copper at 281^circ C is placed in a 137g aluminium calorimeter cup containing 817-g of water at 14.5^circ C.
To see that it is easy to break a thighbone when falling in this fashion, find out the greatest distance through which his center of gravity can fall without his breaking a bone.
A uniform ladder 5.0 m long rests against a frictionless, vertical wall with its lower end 3.0 m from the wall. The ladder weighs 180 N. What is the actual frictional force when the man has climbed 1.0 m along the ladder
You fly your 20.0m -long spaceship at a speed of c/ 4 relative to your friend. determine the speed of your friend relative to you
An iron bolt of mass 63.4 g hangs from a string 32.6 cm long. The top end of the string is fixed. Without touching it, the magnet attracts the bolt so that it remains stationary, displaced horizontally 28.5 cm to the right from the before vertical li..
If the mass of the electron is 9.109 × 10–31 kg, illustrate what is the magnitude of its relativistic momentum?
An isotope of phosphorus called P-32 is radioactive. It decays with half life of 14.3 days with the emission of beta particle. A 1.0 m?Ci source of P-32 is implanted in a tumor where it would deliver radiation dose of 28.6 Gy.
What is the rms speed of nitrogen molecules contained in an 7.9 m3 volume at 2.1 atm if total amount of nitrogen is 1100 mol.
A pilot claims to have seen a UFO moving initially at the speed of about 440 m/s in an easterly direction and then, in a tie interval of only 1.0s turning 45 degrees and moving souutheast at 440 m/s
An intergalactic rock star bangs his drum every 1.70s. A person on earth measures that the time between beats is 2.5s. How fast is the rock star moving relative to earth.
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