The figure shows the graph of
versus time for an object moving along the x-axis. Solve graphically for the distance traveled between t = 5.0 s and t = 9.0 s.
A. 110 m
B. 120 m
C. 100 m
D. 130 m
B. 120 m
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Buoyancy: A barge with vertical sides is 10 m wide and 60 m long and is floating in fresh water of density 1000 kg/m3. How much deeper into the water does the barge sink when 3.0 × 105 kg of coal are loaded on the barge?
A. 25 cm B. 50 cm C. 75 cm D. 1.0 m E. 1.5 m
A 4.00-kg block rests between the floor and a 3.00-kg block as shown in the figure. The 3.00-kg block is tied to a wall by a horizontal rope
If the coefficient of static friction is 0.800 between each pair of surfaces in contact, what horizontal force F must be applied to the 4.00-kg block to make it move? A) 16.2 N B) 54.9 N C) 21.1 N D) 23.5 N E) 78.4 N
__________is an isotope of hydrogen in which the nucleus contains a proton and a neutron
A) Deuterium B) Neutrino C) Tritium D) Hydrogen-4
A Doppler red shift indicates
a. a shift toward higher frequencies. b. a shift toward shorter wavelengths. c. that a light source is approaching relative to the observer. d. none of these.