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A 144-g baseball moving 29m/s strikes a stationary 5.25-kg brick resting on small rollers so it moves without significant friction. After hitting the brick, the baseball bounces straight back, and the brick moves forward at 1.19m/s .
Determine the baseball's speed after the collision
Determine the total kinetic energy before the collision
Determine the total kinetic energy after the collision.
A 250, 35-cm-diameter turntable rotates on frictionless bearings at 60. A 25 block sits at the center of the turntable. A compressed spring shoots the block thoroughly outward next to a frictionless groove in the surface of the turntable.
A 130kg mail bag hangs by a vertical rope 3.6mlong. A postal worker then displaces the bag to a position 2.2m sideways from its original position, What horizontal force is necessary to hold the bag in the new position
find the initial velocity of the ball. An echo is heard in 3 sec after the emission of sound. If speed of sound in air is 342 m/s, what is the distance of the reflecting surface from the source.
A 2kg mass is loaded into a spring cannon. The cannon's spring has a constant k = 4000 abd the spring is compressed 0.8m. How far does it move before it comes to a stop
What are the corresponding velocity vectors
A coil of cross-sectional area .004m^2 consisits of 100 turns and has a resistnace of 4.5ohms. determine The maximum magnetic torque on the coil
For a damped oscillator with a mass of 360 g, a spring constant 110 N/m and a damping coefficient of 87.00 g/s, what is the ratio of the amplitude of damped oscillations to the initial amplitude at the end of 28 cycles.
A 196-g aluminum calorimeter contains 612 g of water at 21° C. A 96-g piece of ice cooled to -21° C is placed in the calorimeter, Find the final temperature of the system, assuming no heat is transferred to or from the system
A 151 kg car rounds a curve of radius 163 m at 46 m/s. The acceleration of gravity is 9.8 m/s2 . What force must the road exert on its tires to hold the car on course? find out its speed when it has moved?
A step-down transformer is used for recharging the batteries of portable devices. The turns ratio N2/N1 for a particular transformer used in a CD player is 4:57. find the power delivered to the CD player
A visual inspection of an insect with mass 0.4mg (milligrams) suggest that its uncertainty in postion is 0.5um, How fast could the insect be moving
A transverse sinusoidal wave on a string has a period T = 45.0 ms and travels in the negative x direction with a speed of 30.0 m/s, What is the maximum transverse speed of the string
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