The magnetic field going through a stationary circular loop increases from zero to 5 T in a certain time t. The induced current in the loop will depend on the radius of the loop, r, the resistance of the loop, R, and the time, t. If two of these stay constant, the induced current can be directly proportional to
a. t.
b. r.
c. R.
d. none of these
d
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Which season is shown in the picture for the southern hemisphere?
a. spring
b. summer
c. fall
d. winter
When the velocity and acceleration of an object have the same sign, the speed of the object increases
Indicate whether the statement is true or false
What is the thickness of a soap bubble film (n = 1.38 ) that results in a constructive interference in the reflected light if this film is illuminated by a beam of light of wavelength 610 nm?
A) 222 nm B) 111 nm C) 333 nm D) 444 nm E) 555 nm
A Boeing-737 airliner has a mass of 30,000 kg. The total area of the wings is 100 m2 . What must be the pressure difference between the top and bottom of the wings to keep the airplane up?
a. 1960 Pa c. 7840 Pa b. 2940 Pa d. 15,700 Pa