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Q. A 100-kg cannon at rest contains a 10-kg cannon ball. When fired, the cannon ball leaved the cannon with a speed of 450 m/s. What is the recoil speed of the cannon?
Q. Very short pulses of high-intensity laser beams are used to repair detached portions of the retina of the eye. The brief pulses of energy absorbed by the retina welds the detached portion back into place. In one such procedure, a laser beam has a wavelength of 815 , and delivers 221 , of power spread over a circular spot 536 , in diameter. The vitreous humor (the transparent fluid that fills most of the eye) has an index of refraction of 1.34. What is the maximum value of the electric field in the laser beam?
Childrens in college are sometimes sold college special policies created for seniors. So, determine is it wise for college Childrens to buy life insurance while they are still in college?
Detroit Disk, Inc. is a retailer for digital video disks. The projected net income for the current year is $600,000 based on a sales volume of 400,000 video disks. Calculate Detroit Disk's break-even point for the current year in number of video di..
Illustrate what is the fed funds rate in the banking system. Explain how the Fed manipulates this rate in order to achieve macroeconomic objectives.
Reflecting on your weekly readings and personal experiences, please demonstrate that you have researched the topic and state your position on the topic.
After reading about attacks on servers like to ones used in one of company's departments, the CIO has asked you to come up with a report as to what.
Assume that the demand for cigarettes is perfectly inelastic, whereas the elasticity of supply is one. The equilibrium price is $1 a packet and the equilibrium quantity is 1000 packets a week..
Investors may use P/E ratios and price/sales ratios to value stocks. If this analysis is used, which of the following is desirable
Create a set of family situations where every insurance term and whole life insurance are the most suitable type of policy to meet the customer's needs.
Determine the contribution margin for this practice. Determine the accounting break even point in the terms of number of Enrollees. Determine the economic break even point in terms of number of Enrollees.
Show which of the following motivation theories would be most effective to motivate these employee groups and explain
A child goes down a playground slide with an acceleration of 1.22. Find out the coefficient of kinetic friction between child and slide if the slide is inclined at an angle of 31.0 below the horizontal.
A rotational axis is directed perpendicular to the plane of a square and is located . Two forces, 1 and 2, are applied to diagonally opposite corners, and act togther the sides of the square, first as shown in part a and then as shown in part b of..
Calculate the radius of the path, direction of the force experienced by the electron and the path of the electron through the magnetic field.
Runner A is initially 6.80 km west of a flagpole and is running with a constant velocity of 2.6 km/h due east. Runner B is at first 3.80 km east of the flagpole and is running with a constant velocity of 8.20 km/h due west. What will be the distan..
The effects of the spin of the earth
When the electric power was turned off, the electric motor originally running at 1800 rpm comes to rest in 15.0 s. Find out the angular acceleration, the angular velocity at the end of 5.0 s, and the total angle turned through in 15.0 s.
Solve the algebraic expression by using power rules.
A very long non conducting cylinder of diameter 10.0 cm carries charge distributed uniformly over its surface. Each meter of length carries +5.50 C of charge. A proton is released from rest just outside the surface.
2.0 kg ball moving with a speed of 3.0 m/s hits, elastically, an identical stationary ball as shown. If the first ball moves away with angle 30° to the original path,
A dolphin in seawater at a temperature of 25 °C makes a chirp. How much time passes before it hears an echo from the bottom of the ocean, 208 m below.
A simple pendulum has a mass of 0.350 kg and a length of 7.00 m. It is displaced through an angle of 12.0° and then released. Solve this problem by using the simple harmonic motion model for the motion of the pendulum.
An object falls because of gravity at the rate of -920 cm/s2 (- sign is indicative of a downward direction) for 10.00 Seconds. If it starts from rest (vo = 0) and its position starts from do= 0.0, where is it 10.00 Seconds later.
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