The coefficient of friction between a racecar's wheels and the track is 1.0 . The car starts from rest and accelerates at a constant rate for 300 m. Find the maximum speed at the end of the race
a. 44 m/s
c. 89 m/s
b. 77 m/s
d. 99 m/s
B
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A particle (charge = 5.0 mC) is released from rest at a point x = 10 cm. If a 5.0-mC charge is held fixed at the origin, what is the kinetic energy of the particle after it has moved 90 cm?
a. 1.6 J b. 2.0 J c. 2.4 J d. 1.2 J e. 1.8 J
A hydrogen atom is in its n = 2 excited state when its electron absorbs a photon of energy 8.5 eV. What is the energy of the resulting free electron?
The lowest level energy state of hydrogen is -13.6 eV. (h = 6.626 × 10-34 J ? s, 1 eV = 1.60 × 10-19 J) A) 5.1 eV B) 6.6 eV C) 6.9 eV D) 7.6 eV
Seismic waves are classified as body waves and surface waves. An example of a body wave is a
A) Primary wave (P-wave). B) Love wave. C) Rayleigh wave. D) Tertiary wave (T-wave).
A loop of wire (resistance = 2.0 m?) is positioned as shown with respect to a long wire which carries a current. If d = 1.0 cm, D = 6.0 cm, and L = 1.5 m, what current is induced in the loop at an instant when the current in the wire is increasing at a rate of 100 A/s?
A. 34 mA B. 30 mA C. 27 mA D. 38 mA E. 0.50 mA