Determine average force on the wall from the bullet
A projectile of weight 100lb hits a wall with a velocity of v = 1200 ft/s. The projectile comes to rest in 0.01s penetrating an 8ft thick wall to a distance of 6ft. The average force on the wall from the bullet is?
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A 2.0-kg block slides on a frictionless 15 degree inclined plane. A force acting parallel to the incline is applied to the block. The acceleration of the block is 1.5 m/s^2 down the incline. What is the applied force?
A certain string just breaks when it is under 25 N of tension. A boy uses this string to whirl a 2-kg stone in a horizontal circle of radius 3 m. The boy continuously increases the speed of the stone. At approximately what speed will the string br
High density lipoprotein (HDL) in healthy males follows a normal distribution with a mean of 50 and a standard deviation of 8. What proportion of healthy males have HDL exceeding 60?
A 1.800 g sample of phenol C6H5OH was burned in a bomb calorimeter whose total heat capacity is 11.66 kJ/C degree. The temperature of the calorimeter plus contents increased from 21.36 C degree to 26.37 C degree.
The projectile comes to rest in 0.01s penetrating an 8ft thick wall to a distance of 6ft. The average force on the wall from the bullet is?
The block is initially at rest at its equilibrium position when a force (magnitude P = 80 N) acting parallel to the surface is applied to the block. What is the speed of the block when it is 13 cm from its equilibrium position?
No electrons are emitted from the surface of metallic Cs until the frequency of the radiation reaches 4.50 x 10^16 Hz. Find the energy required to remove the electron from the metal surface.
Assume that the mean hourly cost to operate a commercial airplane follows the normal distribution with a mean of $2,050 per hour and a standard deviation of $205. What is the operating cost for the lowest 6 percent of the airplanes?
(a) Do the satellites move with acceleration? Write down the second law of Newton for their motion. (b) Using (a) write down the expression for the period of rotation (orbital period), T, as a function of radial distance r. How does Callisto's orb
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