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Q1. The whole track is 3128feet long and the ride takes 3.80 minutes. What's the average speed in feet per hour?
Q2. Needing help, secretary of the United States Department of Agriculture asked your teacher, "If a chicken and a half can lay an egg and a half in a day and a half, how many days will it takes three chickens to lay twenty eggs?"
The diagram on the left below shows two resistors in series with an ideal battery, in the diagram on the right; a third resistor has been added in parallel with R2. Calculating the resistance, current and potential difference.
What is the magnitude of the acceleration of a modified Atwood machine if the mass of the cart is 3 kg and the hanging mass is 4 kg? (Use g = 9.8 m/s2. Express your answer to one decimal point.)
What is the coefficient of static friction
pipe open at one end only has a fundamental frequency of 237 Hz. A second pipe, initially identical to the first pipe, is shortened by cutting off a portion of the open end. Currently, when both pipes vibrate at their fundamental frequencies, a beat ..
What is the total displacement and the angle of displacement
What would be the potential difference VC - VB across the thin resistor if the battery emf is 4.00 volts? Suppose that the electric field in the thick wires is very small (so that the potential differences along the thick wires are negligible)
Establish the wave functions and the general expression
A stone is thrown at a bell with the speed of 20m/s. The stone strikes the bell and the sound is heard 2.60 s after the stone was released. Speed of sound is 342m/s, how far is the boy from bell.
A 1650-kg car is travelling at 31.2 m/s. How fast must a 91.0-kg bicycle and rider be travelling to have the similar kinetic energy as the car.
Water flows at 5.0;{rm L}/{rm s} through a horizontal pipe that narrows smoothly from 10 cm diameter to 5.0 cm diameter. A pressure gauge in the narrow section reads 50 kPa. What does the other pressure gauge read.
The distance between points A and B along the open flow path is 500 ft. Calculate the total head loss between points A and B. Assume A and B are at the same elevation.
A 3.20 kg block of wood sits on a table. A 2.50 g bullet, fired horizontally at a speed of 600 m/s, goes completely through the block, emerging at the speed of 180m/s. What is the speed of the block immediately after the bullet exits.
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