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In a circular flat track with a radius of 50 meter, find what is the maximum speed a car can go without sliding? Suppose the coefficient of static friction between the car tire and the road is 0.4.
A 60.0-kg woman balances on one heel of a pair of high-heeled shoes. If the heel is circular and has a radius of 1.00 cm, what pressure does she exert on the floor if she stands on one foot
Calculate the force on the baby due to Jupiter if it is at its closest to the Earth, some 6.29x1011 m away, showing it to be comparable to that of the father
Two long parallel wires are separated by 4.0mm. The current flowing in one of the wires is twice that in the other wire. If the magnitude of the force on a2.0-m length of one of the wires is7.2µN, what are the values of the two currents? (Enter your ..
A 12- V battery causes a current of 0.40A through a resistor. how may joules of energy does the battery lose
An unstrained horizontal spring has a length of 0.34 m and a spring constant of 290 N/m. Two small charged objects are attached to this spring, one at each end. The charges on the objects have equal magnitudes.
a 10 g piece of aluminum which has a specific heat of 0.215 calgm-c0 is warmed so that its temperature increases by
Comet Halley has an orbital perios of 75 years and when it enters the inner Solar System, it passes within a few AU of the Sun. Determine the average distance of Comet Halley
A current-carrying wire passes through a region of space that has a uniform magnetic field of 0.76 T. determine the minimum current needed to levitate the wire
A truck of 2500kg travels at 40m/s it crashes against a wall and stops at 0.2s, what is the value of impulse?, find the average force on the truck along the impact.
A .01 kg bullet is fired into a 5.0 kg wood block that is at rest on a level wood table. The block, with the bullet embedded, slides .05 m across the table. What was the initial speed of the bullet
You have a thermodynamic system with three states. You observe the probabilities p1 = 0.9, p2 = 0.09, p3 = 0.01 at T = 300K. What are the energies "2 and "3 of states 2 and 3 relative to the ground state?
the security alarm on a parked car goes off and produces a frequency of 1220 Hz. The speed of sound is 343 m/s. At what speed are you driving
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