An object that is moving in a linear path with an acceleration at a right angle to the motion has a(n) ______________ velocity
a. changing
b. increasing
c. decreasing
d. constant
a
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Buoyancy: When a container of water is placed on a laboratory scale, the scale reads 120 g. Now a 20-g piece of copper (of density 8.9 g/cm3) is suspended from a thread and lowered into the water, not touching the bottom of the container. What will the scale now read? The density of water is 1.0 g/cm3.
A. 120 g B. 122 g C. 138 g D. 140 g
A gear shaft transmits torques TA 5 975 N?m, TB 5 1500 N?m, TC 5 650 N?m, and TD 5 825 N?m. If the allowable shear stress is 50 MPa, the required shaft diameter is approximately:
(A) 38 mm
(B) 44 mm
(C) 46 mm
(D) 48 mm
Any main-sequence star over 25 solar masses will probably retain enough matter in its core after its supernova to make a black hole
Indicate whether the statement is true or false
Sagittarius A* was first noted due to its strong ________ emissions
A) radio B) X-ray C) ultraviolet D) infrared E) gamma ray