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3. A spring, with a spring constant of 5710 N/m, is compressed by 0.45 m and used to launch a 15.5 kg mass from rest from point A across a frictionless surface and down a short hill that is H = 1.73 m high. The surface becomes rough at point B, and the mass comes to a stop at point C.
(a) How much work was done by friction between B and C?
(b) If the coefficient of kinetic friction between the mass and the rough surface is 0.53, how far will it travel before coming to rest? That is, determine the distance between point B and point C.
Racing drivers like to warm up the tyres of their car as soon as possible. One reason is that warm tyres grip the road better but the temperature also affects the pressure of the air into he tyres.
A 500g rock on a 80 cm long string is swung in a vertical circle 300 cm above the ground. What is the speed of the ball at this point
how high does it rise above the point of free.
The rms value of the electric field in an electromagnetic wave is Erms = 480 V/m. Find the average energy density
Assume that if the shear stress in steel exceeds about 4.00 108 N/m2, the steel ruptures. (a) Determine the shearing force necessary to shear a steel bolt 1.50 cm in diameter. N (b) Determine the shearing force necessary to punch a 1.50-cm-diameter h..
IP Suppose a planet is discovered that has the same amount of mass in a given volume as the earth, but has radius 1/6 R Earth. Calculate the acceleration due to gravity on this planed
a pendulum of period 2 s is released from rest at an inclination of 5 degrees to the downward vertical. what is its
A diffraction pattern forms when light passes through a single slit. The wavelength of the light is 670 nm. Determine the angle that locates the first dark fringe
A 0.31 MeV x-ray photon collides with an electron and scatters straight back the way that it came. What is the energy of the backscattered photon
The staircase has a y length of 13 meters. An X length of 13 meters as well. What would be the optimal length of each steps x length and y length, if the required amount of step of a staircase is 20.
A proton traveling at 19.0° with respect to a magnetic field of strength 2.70 mT experiences a magnetic force of 7.2*10-17 N. Compute the proton's speed. Compute its kinetic energy.
A spherical particle is released 15 ft below water level. The specific gravity of the particle is 0.95 and its diameter is 0.1 in. Assuming steady state: Calculate the terminal velocity of the particle
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