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Joseph is standing 0.80 meters in front of a big spherical mirror (concave mirror), and sees his image upright and magnified 3.0x bigger than he is.
1) Is this image real or imaginary? How far is the image from the mirror?
2) Find the radius of curvature of the mirror.
A 230V shunt motor having an armature resistance of 0.05 ? and a field resistance of 75?? draws a line current of 7 A while running light at 1120 rev/min. determine the total core and mechanical losses
A steel beam 10m long is installed in a structure at 15?C, What is the beam's change in length when the temperature reaches 50?C
A stone is dropped into a river from a bridge 43.90 m above the water. Another stone is thrown vertically down 1.00 after the first is dropped. The stones strike the water at the same time.
A rocket is launched at an angle of 56.0° above the horizontal with an initial speed of 99 m/s. Find the maximum altitude reached by the rocket
A 2.90 m long, 320 kg steel beam extends horizontally from the point where it has been bolted to the framework of the new building under construction. A 66 kg construction worker stands at the far end of the beam.
Silver has a resistivity of 1.62×10^?8 ?m, and a density of 1.05×10^4 kg/m3. What is L? 2.At 20.0 °C, a mainly silicon resistor has a resistance of 585 ?, At what temperature will their resistances be equal
A transformer with a turns ratio (secondary/primary) of 1:15 is used to step down the voltage from a 120-V wall socket to be used in a battery recharging unit.
A man throws a baseball straight up in the air at 19.6 m/s. How many seconds does it take to reach the top
a base for a building column measures 18.0 in. by 18.0 in. on a side and 12 in. high. compute the cross-sectional area in both square inches and square millimeters. compute the volume in cubic inches, cubic feet, cubic millimemters, and cubic mete..
a kereru new zealand wood pigeon travelling at 1.5 m/s due west has an elastic collision with an airbus a380 aeroplane. with what speed is the kereru travelling after the collision?
A charge of 0.99 C is spread uniformly throughout a 18 cm rod of radius 4 mm. What are the volume and linear charge densities?
A uniform electric field of magnitude 4.10 × 105 N/C points in the positive x direction, Find the change in electric potential energy
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