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Truck suspensions have "helper springs" that engage at high loads. When the main leaf spring is compressed by a distance y0, the helper spring engages and then helps to support any additional load. suppose the leaf spring constant is 5.25 x 20^5N/m.
What is the compression of the leaf spring for a load of 5.00 x 10^5 N? How much work is done in compressing the springs?
A very long solenoid with a circular cross section and radius r= 6.10 cm with n= 1.20E+4 turns/m has a magnetic energy density uB= 4.50 mJ/m3. What is the current in the solenoid
A roller coaster car has a mass of 500 kg loaded with passengers. The car passes over a hill of radius 15m, What is the force of the track on the car at the top of the hill
Consider a uniform thin rod of length 2.00 m and mass 1.00 kg is lying on a smooth horizontal table. How far does the center of mass of the rod travel during the time it takes to make one complete revolution
An object 3.25 cm high is placed 18.0 cm in front of a convex mirror with radius of curvature of 8.30 cm. Where is the image formed
Explain some of the many advantages that Fiber Optic Cable has over other media (e.g. conductive wires) in the transport of information.
A point charge Q = +1.69 µC moving in a uniform magnetic field of B = 1.22 T has a velocity of v = 5.93×105 m/s that is perpendicular to the magnetic field. what is the direction of the resulting force
If you twirl a small 7.0-g wooden ball in a circle at 4.0 revolutions per second on a light 10-cm string, approximately how many units of angular momentum does it have
Imagine that a hypothetical life form is discovered on our moon and transported to Earth. On a hot day, this life form begins to sweat, and it is determined that the heat of vaporization of its sweat is 365 cal/g.
The tension in a ligament in the human knee is approximately proportional to the extension of the ligament, What is the tension in this ligament when it is stretched by 0.67 cm
To stretch a relaxed biceps muscle 2.30cm requires a force of 25 N. Find the Young's modulus for muscle tissue assume it to be a uniform cylinder of length 0.24 m and cross-sectional area 51 cm2.
If 20 grams of hot water at 80°C is poured into a cavity in a very large block of ice at 0°C, what will be the final temperature of the water in the cavity? How much ice should melt in order to cool the hot water down to this temerature.
Two identical aluminium objects are insulated from their surroundings. Object A has a net charge of excess electrons. Object B is grounded. Which object is at the higher potential.
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