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Give four examples of no silicate materials. What are the three nonsilicate groups? Give an example of each. Name six physical characteristics that are used to identify minerals. Define the mineralogical terms luster and streak.
Determine the resistance R of the wire. Determine the resistivity If the drift speed is 1.9 x 10-5 m/s, determine the number n of free electrons per unit volume.
A uniform magnetic field B is set up in a solenoid of radius a =.4m. B is directed out of the plane of the paper, and is increasing ar a constant rate of +.5 T/s. find the size of the current induced in the metal ring
a battleship simultaneously fires two shells toward two identical enemy ships. one shell hits ship a which is close by
If the wire is heated to 40.0°C while the 7.0-V potential difference is maintained, what is the resulting current in the wire
An astronaut has two objects that are identical in all respects,except that one is painted black and the other is painted silver. Initially, they are at the same temperature.
In a student experiment, a constant-volume gas thermometer is calibrated in liquid nitrogen (196°C) and in boiling allyl alcohol (97°C). Find what value of absolute zero does the calibration yield
A LASIK vision correction system uses a laser that emits 10 -long pulses of light, each with 2.5 of energy. The laser is focused to a 0.90 -diameter circle. What is the average power of each laser pulse
A double slit is opposite the center of a 1.6-m wide screen 2.4 m from the slits. How many fringes are visible on the screen if the slit is illuminated by 602-nm light
A ceiling fan with 80-cm-diameter blades is turning at 60rpm. Suppose the fan coasts to a stop 30s after being turned off.
A 16 kg steel ball is launched from a cannon at an angle of 20 degrees above the horizontal. The cannon exerted an average force of 1200 Newtons on the ball during launch. Now that ball is in the air and has almost reached its target, what is the ..
An object is placed 13 cm in front of a converging lens with a focal length of 1 cm. Carefully draw a ray diagram on a piece of graph paper , Is the image magnified or reduced
a positive charge q1 is located to the left of a negative charge -q2. on a line passing through the two charges there
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