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A concave mirror has a focal length of 44.2 cm. The distance between an object and its image is 68.1 cm. Find (a) the object and (b) the image distance assuming that the object lies beyond the center of curvature.
A transverse wave of frequency 14 Hz propagates down a string. Two points 15 cm apart are out of phase by pi/6. What is the wave velocity
question1in an assembly operation a robot moves an object first straight upward and then also to the east around an arc
An alpha particle (q = +79e, m = 6.68 x10^-27kg) is fired from a distance of 10 cm at a gold nucleus (q = +79e). find the change in electric potential for the alpha partical
A long, thin rod (length = 5.0 m) lies along the x axis, with its midpoint at the origin. In a vacuum, a +6.0C point charge is fixed to one end of the rod, and a -6.0C point charge is fixed to the other end. find the magnitude of the net torque app..
When 2.1 mol of oxygen (O2)gas is heated at constant pressure starting at 0°C, how muchenergy must be added to the gas as heat to quadruple its volume? (The molecules rotate but donot oscillate.)
The antenna on a cordless phone radiates microwaves at a frequencyof 5.0 GHz. What is the maximum length of the antenna if it is not to exceed half of a wavelength
zero a hypothetical planet has a mass of 3.0 x 1023 kg a radius of 3.0 multiplied by 106 m and no atmosphere. a 13 kg
An aircraft weighing 902 N is accelerated at 10.8 m/s/s for 5 seconds, at which time the aircraft launches. What is the force required to launch the aircraft
On a clear day at a certain location, a 150-V/m vertical electric field exists near the Earth's surface. At the same place, the Earth's magnetic field has a magnitude of 4.800 10-5 T. Compute the energy density of the electric field.
A microwave oven is powered by an electron tube called a magnetron that generates electromagnetic waves of frequency 2.25 GHz, Calculate the speed of the microwaves from these data.
Two workers are moving a slab of ice (m = 410 kg) across the factory floor. As seen from above, one worker exerts a force of 255 N at an angle of -50o, At what angle does the ice slab accelerate
A dipole moment is placed in a uniform electric field oriented along an unknown direction. The maximum torque applied to the dipole is equal to 0.1 N.m. When the dipole reaches equilibrium its potential energy is equal to -0.2 J.
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