Precession of Earth's axis causes the date at which perihelion of Earth's orbit occurs to slowly change
a. True
b. False
Indicate whether the statement is true or false
True
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An electron of mass 9.11 × 10^-31 kg moves with a speed of 0.800c. What is its total energy? (c = 3.00 × 10^8 m/s)
a. 13.7 × 10^-14 J c. 4.80 × 10^-14 J b. 10.2 × 10^-14 J d. 7.30 × 10^-14 J
Your weight as measured on your bathroom scale is
A) equal to your mass. B) the force due to gravity on you. C) a property of mechanical equilibrium. D) all of the above
A bullet is fired with a certain velocity at an angle ? above the horizontal at a location where g = 10.0 m/s2. The initial x- and y-components of its velocity are 86.6 m/s and 50.0 m/s respectively. What is the range of the bullet?
A) 500 m B) 1000 m C) 100 m D) 866 m E) 433 m
Two particles (m1 = 0.20 kg, m2 = 0.30 kg) are positioned at the ends of a 2.0-m long rod of negligible mass. What is the rotational inertia of this rigid body about an axis perpendicular to the rod and through the center of mass?
a. 0.48 kg/m2 b. 0.50 kg/m2 c. 1.2 kg/m2 d. 0.80 kg/m2 e. 0.70 kg/m2