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At a temperature of 24.60°C the hole in a steel plate has a diameter of 1.055 cm. If a steel rod with a diameter of 1.063 cm has to just slip through this hole, to what temperature should the plate be heated? The coefficient of area expansion of steel is 24 ? 10-6/°C.
A football player releases a ball with the initial conditions shown in the figure. Determine the radius of curvature of the trajectory at times t = 0.4 sec and t = 1.2 sec, where t = 0 is the time of release from the quarterback's hand.
A 4.0 V potential difference is applied between the ends of a 0.70 mm -diameter, 75 cm -long nichrome wire.What is the current in the wire?
A research submarine has a 10-cm-diameter window that is 8.7cm thick. What is the submarine's maximum safe depth in salt water
To focus a camera on objects at different distances, the converging lens is moved toward or away from the film, so a sharp image always falls on the film. Obtain over what distance must the lens be movable
Two straight, parallel superconducting cables can withstand a maximum tension of 20 kN/m without breaking. What is the minimum separation required to keep the cables from breaking
A mass of 0.28kg on the end of a spring oscillates with a period of 0.45 s and amplitude of 0.15 m. Find the velocity when it passes the equilibrium point
A convex mirror has a radius of curvature of 50.0 cm. A ruler (30.0 cm in length) is located 25.0 cm in front of the mirror and oriented at an angle of 90 degrees to the principal axis, as shown below. What are the a) location and b) height of the ..
The frequency is tripled, so that the reactances of the inductor and capacitor are no longer equal. What are the new reactances of the inductor
Determine the average induced emf. Determine the induced current. Determin the power dissipated through the resistor.
A cylindrical capacitor consists of a long wire of radius R1 and length L with a charge +Q and a concentric outer cylindrical shell of radius R2, length L and charge -Q. Find the electric field magnitude and energy density everywhere
two equally charged particles held 4.0 x 10-3 m apart are released from rest. the initial acceleration of the first
The dielectric of a parallel plate capacitor is to be a slab of glass that totally fills the volume between the plates. The area of each plate is 0.50 m2. Find what thickness should the glass have if the capacitance is to be 0.10 µF
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