State the three unprovable assumptions of Galilean-Newtonian relativity
What will be an ideal response?
1. The lengths of objects are the same in all reference frames.
2. Time passes at the same rate in all reference frames.
3. The mass of an object, as well as all forces, are the same in all reference frames.
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A circular coil of radius 5.0 cm and resistance 0.20 ? is placed in a uniform magnetic field perpendicular to the plane of the coil. The magnitude of the field changes with time according to B = 0.50e-20t T
What is the magnitude of the current induced in the coil at the time t = 2.0 s? A) 4.2 mA B) 2.6 mA C) 7.5 mA D) 1.3 mA E) 9.2 mA
A square loop (length along one side = 20 cm) rotates in a constant magnetic field which has a magnitude of 2.0 T. At an instant when the angle between the field and the normal to the plane of the loop is equal to 20° and increasing at the rate of 10°/s, what is the magnitude of the induced emf in the loop?
a. 13 mV b. 0.27 V c. 4.8 mV d. 14 mV e. 2.2 mV
Angular momentum __________ conserved
Fill in the blank(s) with correct word
Two clean, glass plates spaced 0.2 mm apart are placed in 20°C water. How far up the plates will the water climb if the contact angle is 0°?
(A) 75 mm (B) 70 mm (C) 65 mm (D) 60 mm