A simply supported wood beam of length l = 6 ft carries a concentrated load p at midspan, as shown. the cross-sectional dimensions of the beam are b = 6 in. and h = 11 in. if the allowable shear strength of the wood is 155 psi, determine the maximum load p that may be […]
Point charge is moving at a constant 8.0 x 106 m/s in the + y-direction, relative to a reference frame. at the instant when the point charge is at the origin of this reference frame, what is the magnetic
In lab, you performed an experiment with a spring to find the mass of an “unknown mass.” if the spring constant is 9.50 n/m and the “unknown mass” caused a displacement of delta 15.6 cm, what is the mass of the “unknown mass” in kg?
If this pulley is subjected to a constant counterclockwise angular acceleration of αa= 3 rad/s2 , determine the angular velocity of pulley b after b turns 5 revolutions. the hub at d is rigidly connected to pulley c and turns with it.
How fast (in m/s and mph) would a 6.80-cm copper bar have to move at right angles to a 0.550-t magnetic field to generate 1.50 v (the same as a aa battery) across its ends?
Given an electron beam whose electrons have kinetic energy of 10.0 kev , what is the minimum wavelength λmin of light radiated by such beam directed head-on into a lead wall? express your answer numerically in nanometers.
The active element of a certain laser is made of a glass rod 33.0 cm long and 1.30 cm in diameter. assume the average coefficient of linear expansion of the glass is equal to 9.00 10-6 (°c)-1. the temperature of the rod increases by 70.0°c. (a) what is the increase in its length?
The development of cyclones and anticyclones about high- and low-pressure regions is a result of deflection of air currents by ____________.
The hoisting gear a has an initial angular velocity of 60 rad>s and a constant deceleration of 1 rad>s2. determine the velocity and deceleration of the block which is being hoisted by the hub on gear b when t
The signal generator has an open-circuit voltage of 3.5 v. when the generator is loaded with 22 ω resistance, its terminal voltage drops to 2.8 v. what is the generator’s output impedance
