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A 2 kg mass, attached to a string, is on a frictionless surface and moves in a horizontal circle. The radius of the circle is 0.5 m. The string will break when the tension reaches 20 N. At what speed will the string break?
A long solenoid of 24 turns per cm carries a current of 16 A. How do you determine its direction
The switch in a series RL circuit in which R = 5.60 ?, L = 2.10 H, and ?V = 24.2 V is closed at t = 0.0 s. What is the maximum current in the circuit? What is the current when t = 0.375 s?
An elevator has mass 540 , not including passengers. The elevator is designed to ascend, at constant speed, a vertical distance of 19.5 (five floors) in 16.2 , What is the maximum number of passengers that can ride in the elevator
A 1.5 kg copper block is given an initial speed of 3 m/s on a rough horizontal surface. Because of friction, the block finally comes to test. If the block absorbs 85% of its kinetic energy, calculate its increase in temperature.
A small package rests on the horizontal dashboard of a car. If ?s = 0.275, what is the minimum acceleration of the car that will cause the package to slip off
A car with a total mass of 1.92*10^3 kg has wheels of radius 31.0 cm and moment of inertia 0.830 kg · m2. What is the car's translational kinetic and rotational energy
Consider 3 Resistors: 10 k?, 20 k?, and 30 k?. Calculate the total resistance if the resistors are connected in series with each other
A galaxy located at a distance D of 1 million light years away has an angular size A= 5 degree. What is the approximate diameter of this galaxy
A 210-kg load is hung on a wire of length of 4.80 m, cross-sectional area 2.00 10-5 m2, and Young's modulus 8.00 1010 N/m2. What is its increase in length
An unknown tuning fork produces a beat frequency of 3Hz when played with a 440Hz fork, What is the frequency of the unknown fork
Two small plastic spheres are given positive electrical charges. When they are 17.0{\rm cm} apart, the repulsive force between them has magnitude 0.200{\rm N} . 1.What is the charge on each sphere if the two charges are equal? 2.What is the charge..
Assuming a mass density of 3.5 g/cm^3 for rock and 1 g/cm^3 for ice, calculate the radius of the rocky core for each of the galilean satellites with complete differentiation
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