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Two railroad freight cars with masses 110 Mg and 140 Mg approach with equal speeds of 0.350 m/s. They collide, the lighter car rebounding opposite its original direction at 0.330 m/s. A) Find the velocity of the heavier car after the collision. Assume the original direction of the lighter car is positive. (Express your answer to two significant figures and include the appropriate units.) B) What fraction of the original kinetic energy was lost in this inelastic collision? (Express your answer using two significant figures.)
How long does it take for a golf ball to fall from rest for a distance of 12.0 m? How far would the ball fall in twice that time
A 3-kg steel ball strikes a wall with a speed of 13-m/s at an angle of 60.0° with the surface. It bounces off with the similar speed and angle. If the ball is in contact with the wall for 0.20s, what is the average force exerted by the wall on the..
A device called a velocity selector is a tube with a crossed electric and magnetic fields set up so that the particle entering with a velocity v_0 along the axis of the tube experiences zero net force.
Between each pair of vertebrae in the spinal column is a cylindrical disc of cartilage. How far does the top surface move relative to the bottom surface
Figure 19-26 shows two paths that may be taken by a gas from an initial point i to a final point f. Path 1 consists of an isothermal expansion (work is 60 J in magnitude), an adiabatic expansion (work is 38 J in magnitude), an isothermal compression ..
In a tube filled with atoms that were excited by an electric current, some of the vibrating atoms move towards the observer while others move away as a result of the particles' random motion, and as a result of the doppler effect, the spectral lin..
If the gravitational potential energy of a 30.7-kg rock is 643 J relative to a value of zero on the ground, how high is the rock above the ground
The circuit shown in the drawing is constructed with six identical resistors and an ideal battery. When the resistor R4 is removed from the circuit, Determine the resistance of each resistor
A 2.90mW helium neon laser emits a visible laser beam with a wavelength of 635nm. How many photons are emitted per second
Consider one mole of neon gas at a temperature of 25°C. Assume neon behaves as an ideal, monatomic gas at this temperature. What is the average translational kinetic energy of a neon atom at this temperature? What is the total random translational ki..
A pipe is closed at one end. A speaker attached to an adjustable signal source is placed very near the open end. The volume of the speaker is set very low so that the sound can barely be heard. However, as the frequency of the source is adjusted i..
When the distance is 0.20m the tension is 628 N, horizontal pivot force is 581 N and the vertical pivot force is 839N. What is the mass of the bell
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