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A 20 meter long steel wire (cross-section 1.0 cm2, Young's modulus 2.0 x 1011 N/m2), is subjected to a load of 25000 Newton. Find how much will the wire stretch under load?
Assume that you hear a clap of thunder 16.9 s after seeing the associated lightning stroke. The speed of sound waves in air is 343 m/s and the speed of light is 3.00 X 10 8 m/s. How far are you from the lightning stroke?
a current of 24.0 ma is maintained in a single circular loop with a circumference of 2.70 m. a magnetic field of 0.520
A spherical pot of hot coffee contains 0.75 of liquid (essentially water) at an initial temperature of 99. Calculate the coffee's rate of heat loss by radiation
A spring-loaded cannon aimed at 40 degrees above the horizontal is on the last car of a long train of flat cars. What is the horizontal range observed by a person standing on the ground
Light passes through a 230 lines/mm grating and is observed on a 1.0m wide screen located 1.3m behind the grating. Three bright fringes are seen on both sides of central maximum.
Water is circulating through a closed system of pipes in a two floor apartment. On the first floor, the water has a gauge pressure of 3.4 x 105 Pascal and s speed of 2.1m/s. Find the gauge pressure of the water on the second floor
The drawing shows the front and rear sprockets of a bicycle. Assume the chain does not slip or stretch. How much time is required to double the speed of the rear sprocket
The team monitoring a space probe exploring the outer solar systemfinds that radio transmissions from the probe take 4.50 hours to reach earth. How distant (in meters) is the probe
liquid crystal display lcd projectors have a small lcd screen inside of them. this emits light and serves as the object
A Texas cockroach of mass 0.189 kg runs counterclockwise around the rim of a lazy Susan (a circular disk mounted on a vertical axle) that has a radius 10.2 cm, rotational inertia 3.61 x 10-3 kg·m2, and frictionless bearings.
An electric dipole attached to a massless rod of length b is placed in a uniform electric field E. Find the natural frequency of oscillation if the dipole is slightly rotated from its equilibrium position and released.
A loop of area 0.02 m^2 is perpendicular to a magnetic field which changes from 2 T to 1.5 T in a time of 0.4 sec. What is the average voltage induced in the loop
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