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A 2.03 kg book is placed on a flat desk. Suppose the coefficient of static friction between the book and the desk is 0.542 and the coefficient of kinetic friction is 0.294. How much force is needed to begin moving the book?
How much force is needed to keep the book moving at constant speed once it begins moving?
A Porsche 944 Turbo has a rated engine power of 217hp . 30% of the power is lost in the drive train, and 70% reaches the wheels. What is the maximum acceleration of the Porsche on a concrete surface where
In 2.0 minutes, a ski lift raises 4 skiers at constant speed to a height of 170 m. The average mass of each skier is 65.00 kg. What is the average power provided by the tension in the cable pulling the lift.
The sun radiates energy at the rate of approximately 3.80 x 1026 W. Calculate the sun's loss of mass per day
Consider the motion of a muon as it moves through the Earth's atmosphere. After a time ? = 2.20 multiply.gif 10-6 s, What is the speed of the muon
Vertically polarized light with an intensity of 0.40 W/m2 passes through a polarizer whose transmission axis is at an angle of 55 degrees with the vertical
A stunt man drives a car at a speed of 20 m/s off a 24-m-high cliff. The road leading to the cliff is inclined upward at an angle of 20? How far from the base of the cliff does the car land
When 3825 J of heat are added to a 0.14-m-long silver bar, its length increases by 4.59 10-3 m. What is the mass of the bar
q1. a continuous line of charge lies along an x axis extending from x x0 to positive infinity. the line carries charge
A thin rod L meters long has a linera density that varies as \(\rho (x) = \rho_{0} e^{-ax}\). Find the mass of the rod
A small immersion heater is rated at 352 W. Estimate how long it will take to heat a cup of soup (suppose this is 250 mL of water) from 20°C to 50°C.
Two infinite parallel plates separated by distance S are at potentials 0 and V0. What are the charge densities on the plates
On a drive from your home to town, you wishto average 33.6 mph. The distance from yourhome to town is 90miles. However, at 45miles(half way), you find you have averaged only25.2 mph.
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