An 80,000-kg airliner is flying at 900 km/h at a height of 8.00 km. What is its total energy (kinetic + potential) if the total was 0 when the airliner was at rest on the ground?
a. 250 MJ
c. 8770 MJ
b. 478 MJ
d. 10,300 MJ
C
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The position x, in meters, of an object is given by the equation x = A + Bt + Ct2, where t represents time in seconds. What are the SI units of A, B, and C?
A) m, m, m B) m, s, s C) m, s, s2 D) m, m/s, m/s2 E) m/s, m/s2, m/s3
What is the Lorentz factor,
for a speed of 0.800 c?
A. 0.800 B. 1.67 C. 0.600 D. 0.360 E. 1.25
In a Galilean telescope, the eyepiece is a diverging lens, while the objective lens is a converging lens. This means that:
A. The image that the observer looks at is inverted B. The image that the observer looks at subtends a larger angle than the object does C. The image that the observer looks at is virtual D. The image that the observer looks at is real
Which unit represents the most energy?
A) calorie B) Calorie C) joule D) all the same