Two identical ladders are 3.0 m long and weigh 600 N each. They are connected by a hinge at the top and are held together by a horizontal rope, 1.0 m above the smooth floor forming a symmetric "A" arrangement
The angle between the ladders is 60° and both ladders have their center of gravity at their midpoint. What is the tension in the rope? A) 240 N
B) 300 N
C) 220 N
D) 260 N
E) 280 N
E
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The event horizon
a. is believed to be a singularity. b. is a crystalline layer. c. has a radius equal to the Schwarzschild radius. d. marks the inner boundary of a planetary nebula. e. is located at the point where synchrotron radiation is created around a pulsar.
The celestial object _______________ is just one of many small objects that orbit the Sun beyond Neptune
Fill in the blank(s) with correct word
Why is the eclipse year shorter than 365.25 days?
What will be an ideal response?
Consider a 1000. Gauss magnetic field along the z axis and a proton moving with an instantaneous velocity of = 3 + 4 km/s (note its speed is 5. km/s composed of 3. km/s along the x axis and 4. km/s along the z axis)
Determine the radius of its spiraling orbit. [proton: 1.67 × 10-27 kg and 1.6 × 10-19 Coulomb]