The two rigid objects shown in the figure below have the same mass, radius, and angular speed. If the same braking torque is applied to each, which takes longer to stop?
2
Physics & Space Science
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The temperature at which a parcel of air becomes saturated and condensation begins is called the _______.
What will be an ideal response?
Physics & Space Science
A comet is observed to pass 
m from the surface of the sun. The sun’s radius is 
m. What is the speed of the comet at this point, if its speed when passing the Earth’s orbit, 
m from the sun’s center, is 25km/s?
A. 561 km/s B. 618 km/s C. 562 km/s D. 585 km/s
Physics & Space Science
A solenoid of length 2.8 cm and diameter 0.75 cm is wound with 160 turns per cm. When the current through the solenoid is 0.20 A, what is the magnetic flux through one of the windings of the solenoid?
a. 
b. 
c. 
d. 
Physics & Space Science
How fast is a galaxy at a distance of 300 Mpc receding from us?
A: 300 km/s B: 300,000 km/s C: 240 km/s D: 21,600 km/s E: 7,200 km/s
Physics & Space Science