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The owner of a van installs a rear-window lens that has a focal length of -0.310 m. When the owner looks out during the lens at an object located directly behind the van, the object appears to be0.260 m from the back of the van, and appears to be 0.370 m tall. (a) How far from the van is the object really located, and (b) how tall is the object?
suppose that sound is emitted uniformly in all directions by a public address system. the intensity at a location 25 m
A 50 kg block is tied to a 100kg block by a horizontal rope. What is the tension in the rope between the two blocks
When a hammer strikes a nail, it is compressed along its length. Suppose that a steel nail 6.00 cm long, What is the impulse imparted to the hammer
Brewed coffee is often too hot to drink right away. You can cool it with an ice cube, but this dilutes it. compute the final temperature of the coffee
an electric point charge of q1 5.03 nc is placed at the origin of the real axis. another point charge of q2 3.93 nc
What is the magnitude of the second charge.
You combine two thin lenses by placing them in contact so that their axes coincide, forming what is called a compound lens. The focal lengths of the lenses are 24.1 cm and –53.9 cm, respectively. Find the focal length of this compound lens?__________..
analog data having highest harmonic at 30 khz generated by a sensor has been digitized using 6 level pcm. what will be
Sound travels at a speed of about 344 m/s in air. You see a distant flash of lighting and hear the thunder arrive 7.6 seconds later. How many miles away was the lighting strike
You and the friend each drive 47.0 km. You travel at 87.0 km/h; your friend travels at 98 km/h. How long will your friend wait for you at the end of trip.
The sound intensity of a whisper is 1.0x10^-10 W/m^2 at one meter distance from the source. At what distance does the intensity level drop by an additional 1dB
Rhea, one of Saturn's moons, has a radius of 765 km andan acceleration due to gravity of 0.278 m/s2 at itssurface. Calculate its mass and average density
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