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A 4.7-g object moving to the right at 18 cm/s makes an elastic head-on collision with a 9.4-g object that is initially at rest.
a.) What is the velocity of the 4.7-g mass after the collision?
b.) What fraction of the initial kinetic energy was transferred to the 9.4-g block?
A net force of 36N accelerates a 5.1-kg mass over a distance of 12 m. What is the increase in kinetic energy of the mass
After 2.02 days, the activity of a sample of an unknown type radioactive material has decreased to 82.2% of the initial activity. What is the half-life of this material
Digital bits on a 12.0-cm diameter audio CD are encoded along an outward spiraling path that starts at radius R1=2.5cm, Determine the total length of the spiraling path
a massless spring of spring constant 50 N/m is suspended vertically. Set the vertical origin to the natural length of the spring. what are the amplitude and frequency of the oscillations
A truck covers 40.0 m in 7.35 s while uniformly slowing down to a final velocity of 3.40 m/s, Find the truck's original speed
A 45dB sound wave strikes an eardrum whose area is4.2multiplied by10-5m2. How much energy is absorbed by the eardrum per second
The speed of an alpha particle is determined to be 8.75×106 m/s. If all of its kinetic energy is acquired by passing through an electric potential, what is the magnitude of that potential
A 66 {rm kg} skier speeds down a trail, as shown in the figure . The surface is smooth and inclined at the angle of 22 ^circ with the horizontal. Find the magnitude of the net force acting on the skier.
Compute the centripetal acceleration of a point on Earth's equator given earth's 24 H rotation period. Compare your answer with g=9.80 m/s
Three charges, q1=2.0x10^-8 C, q2= -3.0x10^-8 C, and q3= -4.0x10^-8 C, are located on the y-axis, Find the resultant force exerted on the third charge q3 by the other two charges
Two closely spaced circular disks form a parallel-plate capacitor. what are the diameters of the disks
An electron moves in a circular path perpendicular to a constant magnetic field with a magnitude of 3.50 mT. Determine the radius of the circular path
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