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An illuminated slide is held 70 cm from a screen. How far from the slide (among the slide and the screen) should a lens of focal length 7.1 cm be placed to form an image of the slide's picture on the screen? (Give the smaller of the two possible answers.)
A massless rod of length 1.00 m has a 2.00-kg mass attached to one end and a 3.00-kg mass attached to the other. What is the angular speed of this system
The right ascension of the star Vega, brightest star in theconstellation Cygnus, is 18h 37m 12s. If Vega’s Hour Angle is +3h 10m, what is the LocalSidereal Time?
a hare and a tortoise compete in a race over a straight course 2.15 km long. the tortoise crawls at a speed of 0.210 ms
A uniform board is leaning against a smooth vertical wall. Theboard is at an angle above the horizontal ground. Thecoefficient of static friction between the ground and the lower end of the board is 0.550.
a box is sliding down an incline tilted at an angle 14.0deg above horizontal. the box is sliding down the incline at a
You shine red laser light with wavelength 670 nm through two narrow slits where the spacing between the slits is 0.005 mm. You use a screen placed far from the slits to detect the interference pattern. What is the smallest angle where the path diff..
a cosmic ray proton is moving at such a speed that it can travel from the moon to earth in 1.70 s. assume earth-moon
a spot of paint on a bicycle tire moves in a circular path of radius 0.33 m.when the spot has traveled a linear
A light bulb is connected to a 240-V wall socket. The current in the bulb depends on the time t according to the relation I = (2.828 A) sin[(345.4 Hz)t]. What is the average power delivered to the light bulb
The magnetic field B at the center of a circular coil of wire carrying a current I (as in fig. 20-9) is where N is the number of loops in the coild and r is its radius. estimate the magnetic field strength at the center of coil
An electronic device dissipating 30 W has a mass of 20g and a specific heat of 850 J/kgoC. The device is lightly used, and it is on for 5 min and then off for several hours, throughout which it cools to the ambient temperature of 25 o C.
A 0.2 kg stone is attached to a swung and string in a circle of radius 0.6 m on a frictionless and horizontal surface. If the stone makes 150 revolutions per minute, the tension force of the string on the stone is?
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