Water can be turned to ice by
A) lowering the surrounding air pressure.
B) extracting energy.
C) both of these
D) neither of these
Answer: C
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A person throws a ball horizontally from the top of a building that is 40.0 m high. The initial velocity of the ball is 100 m/s. What is the horizontal distance that the ball travels before hitting the ground?
A) 100 m B) 286 m C) 325 m D) 367 m E) 572 m
The Heisenberg uncertainty principle states that
A) Planck's constant sets a limit on accuracy of measurements. B) we can't simultaneously measure exactly both the position and momentum of a particle. C) we can't simultaneously measure exactly a particle's energy and time having that energy. D) all of the above
What are the two largest moons of Neptune and what makes them peculiar objects in our Solar System?
What will be an ideal response?
A particle (mass = 5.0 g, charge = 40 mC) moves in a region of space where the electric field is uniform and is given by Ex = ?5.5 N/C, Ey = Ez = 0 . If the position and velocity of the particle at t = 0 are given by x = y = z = 0 and vx = 50 m/s, vy = vz = 0, what is the distance from the origin to the particle at t = 2.0 s?
a. 60 m b. 28 m c. 44 m d. 12 m e. 88 m