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a converging lens forms a real image 1.27 times the size of the object. The object distance is 22cm. Find the distance of the focal point from the center of the lens.
Two long, parallel wires are separated by a distance of 2.50cm . The force per unit length that each wire exerts on the other is 3.20×10?5N/m, determine the current in the second wire
A hoop and a disk, both of 0.44- m radius and 5.0- kg mass, are released from the top of an inclined plane 3.5 m high and 8.7 m long. What is the speed of the hoop
A worker pushes horizontally on a large crate with a force of 304 N and the crate is moved 4.4 m. How much work was done.
A nuclearpower planthas a reactor that produces heat at the rate of870MW. At what rate is heat discarded to the environment by this power plant
How many atoms of helium gas fill a spherical balloon of diameter 30.6 cm at 22.0°C and 1.00 atm, What is the average kinetic energy of the helium atoms
A 0.031 kg aluminum bullet traveling at 471 m/s strikes an armor plate and comes to a stop. compute the bullet's temperature change in degrees Celsius
A particle with a charge of +8.7 ?C and a speed of 45 m/s enters a uniform magnetic field whose magnitude is 0.35 T. find the magnitude of the magnetic force on the particle
A Styrofoam box has a surface area of 0.83 m2 and a wall thickness of 2.0 cm. The temperature of the inner surface is 5.0°C, determine the thermal conductivity of the Styrofoam.
An insect 1.1 tall is placed 1.3 beyond the focal point of the objective lens of a compound microscope. The objective lens has a focal length of 17 , Where is the image formed by the objective lens
An electromagnetic wave traveling in the negative x direction has an electric field amplitude of 10.0 V/m in the positive y direction. calculate the amplitude of the magnetic field
An electron and a positron each of mass 9.1 x 10^-31 kg, are in the same general vicinity and have very small initial speeds
question1a boat crosses a river of width 171 m in which the current has a uniform speed of 1.51 ms. the pilot maintains
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