The natural maximum angle at which a loose material of a given size can rest without sliding under the pull of gravity is
What will be an ideal response?
The Angle of Repose
You might also like to view...
What is the force on a proton sitting midway between a pair of parallel conducting plates that sit at potentials of -17 V and 55 V, respectively? Their separation distance is 1.5 cm.
a. 
b. 
c. 
d. 
e. 
In the context of neutron stars, which of the following statements is true of pulsars?
A) Neutron stars older than 10 million years rotate too slowly to generate detectable radio beams. B) When a pulsar first forms, it spins only around 10 times a second. C) As a pulsar blasts beams of radiation outward, its rotation speeds up. D) Supernova remnants last more than 150,000 years before they mix into the interstellar medium and disappear.
A Geiger counter placed 1 meter from a point source of radiation registers 100 counts per minute. If the Geiger counter is moved closer, half-way to the source, the counting rate will be
A) 25 counts/min. B) 50 counts/min. C) 100 counts/min. D) 200 counts/min. E) 400 counts/min.
A series circuit consists of ac source, a 90-? resistor, a 0.80-H inductor, and an 80-?F capacitor
The frequency of the source is adjusted so that the capacitive reactance is equal to twice the inductive reactance. What is the frequency of the source? A) 14 Hz B) 13 Hz C) 16 Hz D) 17 Hz E) 19 Hz