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Problem:
Nickels falling over. You may feel that it is obvious that the probability of a head in tossing a coin is about 1/2 because the coin has two faces. Such opinions are not always correct. Stand a nickel on edge on a hard, flat surface. Pound the surface with your hand so that the nickel falls over.
Required:
1. What is the probability that it falls with heads upward? Make at least 50 trials to estimate the probability of a head.
A river flows due south with a speed of 1.0m/s . A man steers a motorboat across the river; his velocity relative to the water is 4.3m/s due east. What is the direction of his velocity relative to the earth
On August 19,1987, Alessandro Andrei set a world record in the shot put with a throw of 22.9 m (75 ft 2 in.). What was the maximum height the projectile reached above the ground
A beam of light in the air makes an angle of 47.5 degrees with the surface (not the normal) of a glass plate having a refractive index of 1.66. (a) what is the angle between the reflected part of the beam and the surface of the glass?
Resistors are assigned a power rating. If the power rating isexceeded significantly, the resistor will overheat and crack.Suppose you have a 9 k ,0.2 watt resistor. What is the maximum voltage it can safelyhandle?
If a cat repeatedly rubs against your cotton slacks on a dry day, the charge transfer between the cat hair and the cotton can leave you with an excess charge of -2.00 ?C. How many electrons are transferred between you and the cat
Two arrows are fired simultaneously with the same speed of 30.0 m/s. What is the magnitude of the total momentum of this two-arrow system
A platform is rotating with an angular speed of 3.00 rad/s and an angular acceleration of 11.0 rad/s2. what is the magnitude of the total acceleration a
A student is asked to use the photoelectric effect to determine the work function and cutoff wavelength for an unknown sample. What answers should the student have found for the work function and cutoff wavelength for the sample
The coefficient of expansion of iron and zinc
When a .22-caliber rifle is fired, the expanding gas from the burning gunpowder creates a pressure behind the bullet. determine the average pressure of the expanding gas
A logic circuit has two 2-bit unsigned binary numbers X[1:0] and Y[1:0] as the inputs and it has two 1-bit outputs. One of the outputs is ONE_GTR and the other is X1_XOR_Y1.
A point charge with charge q1 = 2.80?C is held stationary at the origin, How much work W is done by the electrostatic force on the moving point charge
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