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Old naval ships fired 15 kg cannon balls from a 210kg cannon. It was very important to stop the recoil of thecannon, since otherwise the heavy cannon would go careening acrossthe deck of the ship. In one design, a large spring with springconstant 2.0×104 N/m was placed behind thecannon. The other end of the spring braced against a post that wasfirmly anchored to the ship's frame.
What was the speed of the cannon ball if the spring compressed50 cm when the cannon was fired?
Two converging lenses with focal lengths of 40cm and 20cm are 14cm apart. Calculate the image position and image height
make use of the force equation of equilibrium with torques to compute around the second pivot pt, fine the women's position when the beam is about to tip.
A 1.02 kg mass is suspended from a wire changes the length of the wire by 1.20 mm. find the stress in the wire due to the suspended mass
A laser pulse has an energy of 16 J and a beam radius of 2 mm. The pulse duration is 11 ns and the energy density is constant within the pulse. What is the spatial length of the pulse
as a 2.0 kg object moves along the x axis the only force acting on it is given by fx 3x squared 2x newtons where x is
An electron is constrained to the central axis of a ring of charge 1 coulomb and of radius 1 meter. Find the frequency of oscillation of the electron in Hertz
A 2.20-uF capacitor is connected across an ac source whose voltage amplitude is kept constant at 60.0V but whose frequency can be varied, Find the current amplitude when the angular frequency is 100 rad/s
A 70.0 kg girl lowers herself to the ground from a height of 8.8 m by holding onto a rope running over a pulley to a 54.0 kg sandbag. what is her speed when she reaches the ground
A 3.00-kg block starts from rest at the top of a 33.0° incline and slides 2.00 m down the incline in 1.75 s. Find the frictional force acting on the block
A flywheel comprises a uniform circular disk with a mass of 99.0 kg and a radius of 1.0 m. It rotates with an angular velocity of 1472 rev/min. what is the tangential force
Determine the magnetic force on an identical particle when it travels through the same magnetic field with a speed of 5.44 m/s at an angle of 32.2° relative to the magnetic field
a -10.0nc point charge and a 20.0nc point charge are 15.0cm apart on the x-axis.what is the electric potential at the
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