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Question1
A 4.7-g object moving to the right at 38 cm/s makes a flexible head-on collision with a 9.4-g object that is initially at rest.
What is velocity of the 4.7-g mass after the collision?
What fraction of the initial kinetic energy was transferred to the 9.4-g block?
Question2
A loudspeaker of mass 17.0 is suspended a distance of = 1.60 below the ceiling by two cables that make equal angles with the ceiling. Each cable has a length of = 3.50. What is tension in each of the cables?
Use 9.80 for magnitude of the acceleration due to gravity.
If the induced voltage is 0.5 V, as B field is decreasing at a rate of 0.5 T/s in a loop. Calculate the area of the loop
An alpha particle (the nucleus of a helium atom formed by 2 protons and 2 neutrons with charge q = +2(1.6 x 10-19 C), Calculate the acceleration of the alpha particle
An aircraft weighing 819 N is accelerated at 11.7 m/s2 for 5 seconds, at which time the aircraft launches. What is the force required to launch the aircraft
A 200g mass on the end of a spring is pulled back 3 cm and released. There is a coefficient of friction between the table and mass of 0.7. The resonant frequency is 7.071 rad/sec.
Find the work done by this force on the particle and the final speed of the particle as it moves along a path.
Suzanne observes two light pulses to be emitted from the same location, but separated in time by 2.70 µs. How fast is Mark moving relative to Suzanne
A standing observer perceives a train whistle to have a frequency of 300 Hz. calculate the frequency of the sound waves emitted from the train
you apply a potential difference of 4.5 volts between the ends of a wire that is 2.5 m in length and .654mm in radius. What length of nichrome wire will you use
A sanding disk with rotational inertia 2.4 10-3 kg•m2 is attached to an electric drill whose motor delivers a torque of 8 N•m about the central axis of the disk. What are the following values about the central axis at the instant the torque has been ..
If the intensity of the electromagnetic radiation produced by the Sun is about 1.4 kW/m2 near the Earth, what size would a sail have to be to accelerate a spaceship with a mass of 11.9 metric tons at 1.39 m/s2
You are in a hot-air balloon that, relative to the ground, has a velocity of 4.65 m/s in a direction due east. find direction of the hawk's velocity relative to the ground
A car travels a straight road at 130 km/h for 30min then at 50 km/h for 10min . It then reverses and goes at 80 km/h for 20min . What is the average velocity for the entire trip? What is the average speed for the entire trip?
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