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An object is located 20.8 cm in front of a convex mirror, the image being 4.48 cm behind the mirror. A second object, twice as tall as the first one, is placed in front of the mirror, but at a different location. The image of this second object has the same height as the other image. How far in front of the mirror is the second object located?
You bring a 200 \rm g wrench into the house from your car. The house is 16\rm {^\circ C} warmer than the car, Find the heat capacity of the wrench
Considered frequency and draw the nodal maps
A box is pushed across the floor, slide with a constant velocity, and is opposed by a friction force of 25N. What is the magnitude of the force? Choose the correct answer. A.Less than 25N B.Zero C.Greater than 25N D.25n
A beam of unpolarized light (at wavelength 550 nm) is incident normally on the face of a sapphire (Al2O3) crystal which is 1 cm thick. The optic axis of the crystal is at an angle of 60 ? with respect to the normal to the incident face. At the..
suppose a toy oscillated with a frequency of 500 hz and hence a period of 0.002s. if the toy moves past an observer at
1 from the top of a 40.0m high cliff two rocks are simultaneously thrown. one is thrown upwards at 20.0ms the other is
What is the final temperature when .032kg of milk at 11C is added to .16 kg of coffee at 91C. suppose the specific heat capactieis of the two liquids are the same as water, and disregard any energy transfer to the liquid's surroundings.
Which of the following statements are true about nuclei and the nuclear force?
what the electrostatic force acts on the proton.
An electron in a cathode-ray tube is emitted from a hot filament at a negligible speed. , whereupon it accelerates across a potential difference of 1.00 x 106 V. Determine its final speed compared to the classical result.
A heat engine working between 170.0oC and 400.0oC, takes in 1.639×107 J of heat and delivers 4.200×106 J of work per cycle. What is the maximum possible efficiency of an engine working between these two temperatures
A uniform stick d = 1 m long with a total mass of 249 g is suspended vertically from a frictionless pivot at its top end. A wad of putty of mass 26 g is moving horizontally with speed v. It strikes and sticks to the stick at a distance 0.75 m from th..
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