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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 computer disk is 8.0 cm in diameter. A reference dot on the edge of the disk is initially located at theta=45 degrees. The disk accelerates steadily for 0.50 s, reaching 2000 rpm, after those coasts at steady angular velocity for another 0.50 s.
How much energy was released in an explosion
Bumblebees actively foraging in the field have been found to be electrically charged, due largely to air resistance as they fly. The charge carried with a bee, which can be as great as 93 pC (pico = 10-12), is thought to play a significant role in po..
A long solenoid has 80 turns/cm and carries current i. An electron moves within the solenoid in the circle of radius 3.10 cm perpendicular to the solenoid axis. The speed of an electron is 0.0330c (c = speed of light). Find current i.
In a science fiction movie, a 100 g base ball travelling with a speed of 60 m/s and an electron travelling at a speed of 1.2 x 10^8 m/s are approaching each other for a head-on collision
A wagon is rolling forward on level ground. Friction is negligible. The person sitting in the wagon is holding a rock. The total mass of the wagon, person and rock is 95.0 kg. The mass of the rock is 0.300 kg. Originally the wagon is rolling forward ..
In a student experiment, a constant-volume gas thermometer is calibrated in liquid nitrogen (?196°C ) and in boiling pentane (36.1°C). The separate pressures are 0.349 atm and 1.442 atm.
a mass M is hanging from two strings. There is a tension of 34 N in the string on the left and a tension of 24 N in the string on the right. How heavy is the object
A 77 kilogram person stands on a scale in an elevator. Find what does the scale read when the elevator is at rest
A car moving at 10 m/s crashes into a barrier and stops in 0.050 s. There is a 20-kg child in the car. Suppose that the child’s velocity is changed by the same amount as the cars in the same time period. What is the impulse required to stop the child..
A very small call (m = 4 gms) hangs on a thread at an angle of ? = 30o. What is the strength of the electric field
If you place a 0.0001-C charge halfway between the terminals of a common 9-v battery, 5 mm apart, what force will that charge experience.
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