Answer:
The movement of electrons in the presence of a magnetic field.
Explanation:
cathode-ray tube (CRT) has to do with
a vacuum tube in which an electron beam is deflected by applying electric or magnetic fields, produces a trace on a fluorescent screen. Cathode-ray tubes are uses in the television (TV) display. Other uses include radar displays, oscillography, and visual displays for computer terminals.
Answer:
The relation between velocity and time is a simple one during uniformly accelerated, straight-line motion. The longer the acceleration, the greater the change in velocity. Change in velocity is directly proportional to time when acceleration is constant.
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Answer:
1000 cm.
Explanation:
To obtain the estimated tree height :
(Height of rod / length of rod shadow) = (height of tree / length of tree shadow)
Substituting values into the formula :
(150cm / 120 cm) = (height of tree / 800 cm)
Using cross multiplication :
Height of tree * 120 = 150 * 800
Height of tree = (150 * 800) / 120
Height of tree = 120,000 / 120
Height of tree = 1000
Hence, estimate height of tree = 1000 cm