While none yet exist, in the very distant future, black dwarfs will comprise the majority of the "normal matter" of the universe
Indicate whether the statement is true or false
TRUE
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A 600-kg car is going around a curve with a radius of 120 m that is banked at an angle of 20° with a speed of 24.5 m/s. What is the minimum coefficient of static friction required for the car not to skid?
A) 0.12 B) 0.24 C) 0.36 D) 0.48 E) 0.60
A transformer consists of a 780-turn primary coil and a 1 403-turn secondary coil. If the current in the secondary is 3.49 A, what is the primary current?
a. 1.94 A b. 4.68 A c. 6.28 A d. 3.49 A e. 2.60 A
In a Young's double-slit experiment, what happens to the angular separation between the fringes when the wavelength is increased at the same time that the slit separation is decreased?
a. It increases. b. It decreases. c. It stays the same. d. The relative sizes of the changes need to be known before a definite answer can be given.
A segment of wire carries a current of 25 A along the x axis from x = -2.0 m to x = 0 and then along the z axis from z = 0 to z = 3.0m. In this region of space, the magnetic field is equal to 40 mT in the positive z direction. What is the magnitude of the force on this segment of wire?
a. 1.0 N b. 5.0 N c. 2.0 N d. 3.6 N e. 3.0 N