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Susan's 10 kilogram baby brother Paul sits on a mat. Susan pulls the mat across the floor using a rope that is angled 30 degree above the floor. The tension is a constant 32 Newton and the coefficient of friction is 0.190. Use work and energy to determine Paul speed after being pulled 3.20 meter.
A ray of light traveling in air enters benzene contained in a rectangular tank whose walls are made of ice. The bottom of the tank is a mirror. What angle does the ray make with the horizontal (normal) when it reaches the side of the tank
In a bizarre experiment devised by a physics teacher and an industrial arts teacher at a local high school, Find the mass of ethylene glycol m_c in kilograms to three significant digits
Water is supplied to an office building 41.5 m high through a pipe at ground level. Find the minimum pressure in the supplypipe so that water can reach the top floor of the building.
The ammonia molecule NH3 has a permanent electric dipole moment equal to 1.47 D, where 1 D = 1 debye unit = 3.34 x 10-30 C-m. Calculate the electric potential in volts due to an ammonia molecule at a point 65.0 nm away along the axis of the dipole..
A nonrotating cylindrical disk of moment of inertia I is dropped onto an identical disk rotating at angular speed w. what is the final common angular speed of the two disks
A poor artist might approximate a flower as a series of radial lines and circular arcs. What is the direction of the magnetic field
the electric force between two charged particles becomes weaker with increasing distance. suppose instead the electric
A spring oscillator is designed with a mass of 0.258 kg. It operates while immersed in a damping fluid, selected so that the oscillation amplitude will decrease to 1.00% of its initial value in 8.34 s
A circular rod of length 25cm and diameter 8mm is made of 1045grade steel. (a) calculate the stress and strain in the rod, andits extension, when it is subjected to 5kN of tension. (b) Atwhat force would the rod begin to yield? (c) by what amount ..
Two parallel wires are 5 m long. They are seperated by a perpendicular distance of 1 cm and carry currents of 20 A, Find the interaction force between the wires
A solid, uniform disk of radius 0.250 m and mass 45.1 kg rolls down a ramp of length 5.20 m that makes an angle of 13.1° with the horizontal. Find the speed of the disk's center of mass when it reaches the bottom of the ramp
A boat has a mass of 6800 kg. Its engines generate a drive force of 4000 N, find the magnitude and direction of the boat's acceleration
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