A=(Vo-V)/t=(10-0)/0.26=10/0.26=38.46m/s2
F=ma=70*38.46=2692.3N
Answer:
13 seconds
90 seconds
Explanation:
=Velocity of sidewalk = 1.2 m/s
=Velocity of woman = 1.6 m/s
Distance to travel = 36 m
Time = Distance / Speed
Time taken by the woman if she walks in the same direction the sidewalk is moving is 13 seconds
Time taken by the woman if she walks opposite to the direction the sidewalk is moving is 90 seconds
Its been some time so i might be wrong but i think the answer is 3 either or 2
On Earth, the acceleration due to gravity is (-9.8 meters per second) per second.
If the school, the roof, and the pencil are on Earth,
then after 3 seconds, the pencil's speed is
[ (-9.8 meters per second)/second ] times [ 3seconds ] = <u>-29.4 meters per second </u>
Answer:
19.3
Explanation:
Assuming we have to find Specific gravity of gold.
As we know that specific gravity is defined as the ratio of weight of the object and weight of the water displaced by the object
so it is given by
specific gravity = weight of the object/weight of the water displaced
now we have
weight of the object = (density)(volume)g
weight of object = (19.3)(0.55)g
now weight of the liquid displaced is given by
weight of water displaced = (1 g/cm^3)(0.55ml)g
now we have
specific gravity = (19.3×0.55)/(1×0.55)
specific gravity= 19.3