Which of the following has the highest frequency?
a) Ultraviolet
b) Microwaves
c) X-rays
d) Radiowaves
Ans: c) X-rays
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Radiative energy is
A) heat energy. B) energy from nuclear power plants. C) energy carried by light. D) energy used to power home radiators. E) energy of motion.
The existence of amino acids in carbonaceous chondrites proves that life on Earth originated in space.
Answer the following statement true (T) or false (F)
A 92-kg man climbs onto a car with worn out shock absorbers and this causes the car to drop down 4.5 cm. As he drives along, he hits a bump, and this starts the car oscillating at an angular frequency of 4.52 rad/s. What is the mass of the car?
A) 890 kg B) 760 kg C) 920 kg D) 990 kg E) 1900 kg
The rigid body shown is rotated about an axis perpendicular to the paper and through the point P. If M = 0.40 kg, a = 30 cm, and b = 50 cm, how much work is required to take the body from rest to an angular speed of 5.0 rad/s? Neglect the mass of the connecting rods and treat the masses as particles
a.
2.9 J
b.
2.6 J
c.
3.1 J
d.
3.4 J
e.
1.6 J