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A lens of focal length 70 millimeter is used as a magnifier. The object being viewed is 1.3 millimeter long, and is positioned at the focal point of the lens. The user of the magnifier has a near point at 25 centimeter. Obtain the angular magnification of the magnifier?
A charge of + 2.00nC is uniformly distributed on a ring of radius 10.0cm that lies in the x = 0 plane and is centered at the origin. Find the work required to move the point charge to the origin.
A criminal is escaping across a rooftop and runs off the roof horizontally at a speed of 5.6 m/s,hoping to land on the roof of an adjacent building. Air resistanceis negligible. The horizontal distance between the two buildings isD, and the roof of t..
A particle has a position vector given by r = (12t)i ^ + (60t-25t2)j ^ , Find the instantaneous-velocity and instantaneous-acceleration vectors as functions of time t
A bullet leaves the muzzle of a gun at a speed of 400m/s. The length of the gun barrel is 0.50m. Assuming the bullet was uniformly accelerated .
Soles of boots that are designed to protect workers from electric shock are rated to pass a maximum rms current of 1.3 mA when connected across an 1.7×10^4V AC source.
A rocket is accelerated to speed 45300 m/s near Earth'ssurface (where Earth's radius is Re= 6370 km.), and it then coasts upward. Find the ratio of its speedto the escape speed on Earth
The equation of a transverse wave on a string is y = (6.1 mm) sin[(30 m-1)x + (300 s-1)t] The tension in the string is 42 N. Find the linear density of this string
A wire of initial length Lo and radius ro has measured resistance of 1.0 ?. The wire is drawn under tensile stress to a new uniform radius of r = 0.25ro. What is the new resistance of the wire
A balloon of volume 4.4 m3 contains argon gas at a pressure of 4.4 105 Pa and room temperature (20°C). What is the total internal energy of the gas? J
the equation of continuity states the mass flow rate has the same value at every position along a tube that has a
Water is ejected from a garden hose of radius 1.07 cm at a speed of 4.57 m/s. Find the flow rate through the hose
A 990.0 g block of wood rests on a tabletop. A 10.0 g bullet is shot straight up through a hole in the table beneath the block. How fast was the bullet going initially
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