I just took the pretest and got B for the answer
Answer:
D
Explanation:
19.6 newtons
A 2.00-kilogram object weighs 19.6 newtons on Earth.
Explanation:
When a truck travels in equal distances in equal intervals of time then we say that the body has got a uniform velocity. In the above example a truck is traveling at 5 miles in all the positions at A, B, and C and all in the intervals of 5 minutes each.
When a certain amount of heat Q is absorbed by a substance, its temperature increases by
following the relationship
where m is the mass of the substance and
is the specific heat of the substance.
For the metal in our problem, the mass of the sample is m=361 g, the amount of heat is Q=1495 J, and the temperature difference is
so by re-arranging the previous formula and by substituting the numbers we can find the specific heat of the metal:
<span>Answer:
The spring force at A and B can be obtained
directly by summing moments_aJx)ut points B and A. respectively.
(+ IM, = 0; F A (1)- 392.4(3) =0 F A = 1 177.2 N
C+ 1M a = 0; F, (1) -392.4(4) = 0 F, = 1569.6 N
Spring Formula : Applying A = - , we have
Inn I S ,
A a = - 1 . 177 ' -- = 0.07*48 m A, = 156 ~ = 0. 10464 ra
x 15(103) 15(103)
Geometry : The angle of tilt a is
a - tan' 1 ^
0.10464 + 0.07848
1
10.4°
v * F
Z te</span>