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Problem: A 1300-kg car rolling on a horizontal surface has speed v = 50km/h when it strikes a horizontal coiled spring and is brought to rest in a distance of 2.2m.
Part I: What is the spring stiffness constant of the spring?
Please show all work and steps to find the spring stiffness constant of the spring and express your answer using two significant figures.
A helicopter is ascending vertically with a speed of 6.20m/s. At a height of 125 meter above the Earth, a parcel is dropped from a window. Compute how much time does it take for the package to reach the ground
a show that the fourier transform of a antihermitian function is imaginary with no symmetry.b show that the fourier
An electric fan is turned off, and its angular velocity decreases uniformly from 500 rev/min to 200 rev/min in 4.00 second. determine the number of revolutions made by the motor in the 4.00 s interval
A ray of light strikes a block of some transparent material at an angle of incidence of 60degrees. Find the speed of light in the block
A student sits at rest on a piano stool that can rotate without friction. The moment of inertia of the student-stool system is 3.7 kg · m2. A secondstudent tosses a 1.4-kg mass with a speedof 2.2 m/s to the student on the stool,
what is the greatest possible rate of energy transfer by radiation from a metal cube 2.4cm on a side that is at 720
in extremely cold weather conditions where the inside thermostat is set to 27 c and the outside temperature is -20 c
A potential difference of 81 mV exists between the inner and outer surfaces of a cell membrane. The inner surface is negative relative to the outer surface. How much work is required to eject a positive sodium ion (Na+) from the interior of the ce..
A spring with an unstrained length of 0.069 m and a spring constant of 2.7 N/m hangs vertically downward from the ceiling. A uniform electric field directed vertically upward fills the region containing the spring.
A 0.635 [m] long guitar string is vibrating at its second harmonic frequency of 490 [Hz]. What is the wavelength of transverse waves on the string
A 13.49 g ball of putty traveling east at 6.75 m/s collided and sticks to another ball of putty of mass 23.81 g traveling north at 14.82 m/s
Mary applies a force of 72 N to push a box with an acceleration of 0.44 m/s2. What is the mass of the box
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