Neglecting air resistance, how fast must you toss a ball straight up in order for it to take 6 seconds to return to its initial level?
A) 5 m/s
B) 10 m/s
C) 20 m/s
D) 30 m/s
E) more than 30 m/s
Answer: D
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The process in which one plate slides under another is called subduction and occurs where seafloor crust descends into the mantle below continental crust
Indicate whether the statement is true or false
If during a given physical process the only force acting on an object is friction, which of the following must be assumed in regard to the object's kinetic energy?
a. It decreases. b. It increases. c. It remains constant. d. It cannot be determined from the information given.
Electronegativity increases ______________ across a period and ______________ in a group
a. right to left; bottom to top b. left to right; top to bottom c. right to left; top to bottom d. left to right; bottom to top
A single conservative force Fx = (6.0x ? 12) N (x is in m) acts on a particle moving along the x axis. The potential energy associated with this force is assigned a value of +20 J at x = 0 . What is the potential energy at x = 3.0 m?
a. +11 J b. +29 J c. +9.0 J d. ?9.0 J e. +20 J