The computer "mouse" was invented in the mid-1960s by Douglas Engelbart. Engelbart's original mouse was housed in a wooden box that had three buttons on top and two wheels on its underside, but the
principle was the same as that of the modern mouse. Unfortunately for Engelbart's bank account, demand
for the mouse did not become widespread until the launch of the Apple Macintosh personal computer in
1984—by which time Engelbart's patent had expired.
Question
The passage suggests that Douglas Engelbart
O made relatively little money from his invention
O worked for Apple computers in the 1980s
was not granted the proper patent for his work
O called the mouse by a different name

made relatively little money from his invention

Explanation:

The passage explains the invention of the computer device, mouse, by Douglas Engelbart.

We can learn from the text that the mouse was not instantly popular. Only around 20 years later it was started to be used globally with computers. By that time, Engelbart’s patent expired, meaning he did not earn any money from sales and usage of the mouse.

Because of this, as well as the line “unfortunately for Engelbart's bank account”, we can conclude that the passage tries to point out the fact that Douglas Englebart did not make much money from his invention, despite it being so widely popular today.

the rhetoric device being used to persuade the audience is pathos.

a solenoid is created by wrapping a l = 90 m long wire around a hollow tube of diameter d = 4.5 cm.   the wire diameter is d = 0.9 mm.   the solenoid wire is then connected to a power supply so that a current of i = 9 a flows through the wire.

randomized variablesl = 90 m

d = 4.5 cm

d = 0.9 mm

i = 9 a                                          

write an expression for the number of turns, n, in the solenoid. you do not need to take into account the diameter of the wire in this calculation.

calculate the number of turns, n, in the solenoid.

write an expression for the length of the solenoid (l2) in terms of the diameter of the hollow tube d.

calculate the length of the solenoid (l2)   in meters.

calculate the magnitude of the magnetic field at the center of the solenoid in teslas.

explanation: