The reason the position of a particle cannot be specified with infinite precision is the
A)
coherence principle.
B)
exclusion principle.
C)
uncertainty principle.
D)
photoelectric effect.
E)
principle of relativity.
C
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Energy balance in the Sun refers to a balance between ________
A) the force of gravity pulling inward and the force due to pressure pushing outward B) the amount of energy the Sun radiates into space and the amount of energy that reaches Earth C) the rate at which fusion generates energy in the Sun's core and the rate at which the Sun's surface radiates energy into space D) the mass that the Sun loses each second and the amount of mass converted into energy each second
If the Hubble Constant is 70 km/sec/Mpc, the accelerating universe is about 10 billion years old
Indicate whether the statement is true or false
A 2.0-kg block slides on a frictionless 25° inclined plane. A force of 4.6 N acting parallel to the incline and up the incline is applied to the block. What is the acceleration of the block?
a. 1.8 m/s2 up the incline b. 2.3 m/s2 up the incline c. 6.6 m/s2 down the incline d. 1.8 m/s2 down the incline e. 2.3 m/s2 down the incline
A vector starts at coordinate (3.0, 4.0) and ends at coordinate (?2.0, 16.0). What are the magnitude and direction of this vector?
What will be an ideal response?