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While riding bumper cars at the fair, bob's car collides directly with the back of joe's car while both cars are moving to the right. before the collision, joe's car was traveling at 1.8 m/s and bob's car at 2.0m/s. the combined mass of joe and his car is only 80 kg, and the combined mass of bob and his car is 100 kg. immediately after the collision, joe's car moves right at 2.0 m/s. how fast and in which direction does bob's car move?
Two point sources of sound waves are 60 cm apart. They produced sinusoidal sound waves in phase and with equal amplitude. Consider a large circular path around the sources.
A 0.42-kg particle has a speed of 8.0 m/s at point A and kinetic energy of 7.5 J at point B. What is the total work done on the particle as it moves from A to B
An inclined plane is sliding, and accelerating, on a horizontal frictionless surface. What is minimum acceleration of the inclined plane for the square block not to slide
A boat crosses the river from the south shore to the north shore by maintaining a constant velocity of 10.9 m/s due north relative to the water. If the river is 362 m wide, explain how far downstream is the boat when it reaches the north shore?
the plates of a fabry-perot interferometer have a reflection coefficient r 0.99. calculate the minimum resolving power
A 3 kg block is dropped from rest onto a linear elastic spring as shown in the attached image. The spring is initially undeformed and has a spring constant of 1130 N/m. What is the deformation of the spring when the block momentarily stops? The block..
a student throws a set of keys vertically upward to her sorority sister who is in a window 2.50 m above. the second
A train is traveling up a 4.6° incline at a speed of 3.27 m/s when the last car breaks free and beginsto coast without friction. How long does it take for the last car tocome to rest momentarily
Young's modulus for earth can be approximated by 5.5*10^5 MN/m^2 and the corresponding shear modulus by 2.0*10^5 MN/m^2. How far from the station did the earthquake take place
At every point on the surface of a sphere of radius 0.4 m the electric field is radially outward, with a magnitude of 20 N/C
An object is placed farther from a converging lens than twice the lens' focal length. Draw a ray diagram to determine the nature of the image and describe it
four long straight wires are perpendicular to the page and their cross sections form a square of edge length a 6.65
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