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A 19 kg box slides 4.0 m down the frictionless ramp shownin the figure , then collides with a spring whose spring constantis 220N/m
What is the maximum compression of the spring?
At what compression of the spring does thebox have its maximum speed?
A patient with thyroid problems has radioactive iodine (123I53) deposited in his thyroid gland. If the 123I53 has an initial activity of 2.5 MBq, what is its activity after 24 days
A Styrofoam ball of mass 0.120 g is placed in an electric field of6000 N/C pointing downward. What charge must be placed on the ball for it to be suspended?
a 1900 kg car rounds a curve of radius 70 m banked at an angle of 12 deg. what is the magnitude of the friction force
A basketball player grabbing a rebound jumps 70 cm vertically. How much total time (ascent and descent) does the player spend (a) in the top 11.9 cm of this jump and (b) in the bottom 11.9 cm.
A steel wire 4.10m long has a mass of 6.10×10^?2 kg and is stretched with a tension of 1260N . What is the speed of propagation of a transverse wave on the wire?
A certain resistor has a resistance of 1.484 ohms at 20.0 degrees celsius and a resistance of 1.512 ohms at 34.0 degrees celsius. What is its temperature of resistivity
A 5.04-g bullet is shot through a0.99-kg wood block suspended on a string2.00 m long. The center of mass of the block rises a distance of0.41 cm. Find the speed of the bullet asit emerges from the block if its initial speed is 396 m/s.
Two point charges are placed on the x axis as follows: chargeq1= -1.50 nC is located at x=.200m, and a charge q2= +5.00 nC is atx=-.300m. What are the magnitude and direction of the net forceexerted bu these two charges on a negative point charge q3=..
Suppose an oxygen molecule traveling at a velocity of 480m/s bounces back and forth between opposite sides of a cubical vessel 0.19 on a side. What is the average force per unit area
A surface encloses the charges q1=3.4uC , q2=7.0uC, and q3=-3.8uC. Find the electric flux through this surface
A 5.00g bullet is fired horizontally into a 1.30kgwooden block resting on a horizontal surface. What was the initial speed of the bullet
Water at ground level is moving at a speed of 1.20 m/sec in a pipe at a pressure of 850 kPa. What is the pressure of the water on the fourth floor
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