Submit Quiz Question 3
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A girl uses a rule to measure the length of a metal rod.
Because the end of the rule is damaged, she places one end of the rod
at the 1 cm mark as shown
How long is the metal rod?
1 attachment
metal rod
-
damaged
end
5
1
2
3
4
5
6
7
cm
OA.
43 mm
OB. 46 mm
OC. 53 mm
Sim
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TE
ENO

- measure reactants precisely. ( first choice)

- stir to the reaction take place. ( second choice)

- wait patiently until the reaction completes. ( fourth choice)

- make sure to recover as much copper as possible. ( last choice)

answer: the direction of the wind is expressed as the direction from which the wind is blowing. for example, easterly winds blow from east to west, while westerly winds blow from west to east.

explanation:

hi there!

out of the two, (b) precision would be more reasonable.   however, both a and b could be pretty reasonable.

-awesomerepublic   : )

initial speed when it is dropped is 150 ft/s

now at the same moment the acceleration due to gravity is perpendicular to its velocity

so as we know that

now we have centripetal acceleration a = 32 ft/s^2 as its perpendicular to velocity

while tangential acceleration at the same moment will be zero

so

now radius of curvature is given as

so the radius of curvature just after it is dropped is 703.125 ft