Neglecting gravity, doubling the exhaust velocity from a single stage rocket initially at rest changes the final kinetic energy of the burnout stage by what factor? Assume all other variables, such as the mass of the rocket and the mass of the fuel, do not change
a. It is the same.
b. It doubles.
c. It quadruples.
d. It increases by a factor of 1.693.
c
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A simple pendulum of length 1.87 m has a mass of 120 g attached. It is drawn back 38.0° and then released. What is the maximum speed of the mass?
a. 1.44 m/s b. 3.93 m/s c. 2.74 m/s d. 2.79 m/s e. 0.249 m/s
Compare and contrast the structure of the Earth and the Moon
What will be an ideal response?
State how to draw the three rays for finding the image position due to a thin lens
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An ideal fluid, of density 0.90 × 10^3 kg/m3, flows at 12 m/s through a level pipe with radius of 0.50 cm. The pressure in the fluid is 1.3 × 10^5 N/m2 . This pipe connects to a second level pipe with a radius of 1.5 cm. Find the speed of flow in the second pipe
a. 54 m/s c. 0.67 m/s b. 1.3 m/s d. 0.33 m/s