A sphere hanging freely from a cord is in
A)
stable equilibrium.
B)
unstable equilibrium.
C)
neutral equilibrium.
D)
positive equilibrium.
E)
negative equilibrium.
A
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Forces that are equal in size and opposite in direction are known as
a. balanced forces b. net forces c. friction forces d. accelerated force
You drive your car at a constant 60 km/h along the highway. You apply the brakes until the car slows to 40 km/h. If at that moment you suddenly release the brakes, the car tends to
A) momentarily regain its higher initial speed. B) continue moving at 40 km/h. C) decrease in speed if no other forces act.
In the amended Montreal Protocol, many nations agreed to phase out ______________ by the year 2000
Fill in the blank(s) with correct word
The Sun, at absolute magnitude +4.8, would be one of the brightest stars in the sky if seen from 32 light-years distance
Indicate whether the statement is true or false