Rank the launch angles for the five paths in the figure below with respect to the time of flight, from the shortest time of flight to the longest
3
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At an instant when a particle of mass 50 g has an acceleration of 80 m/s2 in the positive x direction, a 75-g particle has an acceleration of 40 m/s2 in the positive y direction. What is the magnitude of the acceleration of the center of mass of this two-particle system at this instant?
A. 60 m/s2 B. 56 m/s2 C. 40 m/s2 D. 50 m/s2 E. 46 m/s2
A wave travels in a string at 58 m/s. A second string of 10% greater linear density has the same tension applied as in the first string. What will be the resulting wave speed in the second string?
a. also 58 m/s b. 61 m/s c. 180 m/s d. 55 m/s e. 61 m/s
The oldest objects found so far in our solar system are Earth rocks that are 1 billion years old
a. True b. False Indicate whether the statement is true or false
Two different materials are in contact as shown in the figure. Determine the temperature distribution through the two materials after 10 minutes using a 1 inch grid as shown.
