Answer:
Explanation:
submerged volume of pump = 40 x 12⁻³ ft³
density of oil = .9 x 62.4 lb ft⁻³ ( specific gravity x density of water )
mass of displaced oil = 40 x 12⁻³ x .9 x 62.4 lb
= 1.3 lb
buoyant force = 1.3 lb
weight of pump = 14.6 lb
extra force needed for balancing pump by spring
= 14.6 - 1.3
= 13.3 lb .
Answer:
The balls velocity is 1 divided by 3
Answer:
20 J
Explanation:
Given:
Weight of the book is,
Height or displacement of the book is,
The work done on the book to raise it to a height of 2 m on a shelf is against gravity. The gravitational force acting on the book is equal to its weight. Now, in order to raise it, an equal amount of force must be applied in the opposite direction.
So, the force applied by me should be equal to weight of the body and in the upward direction. The displacement is also in the upward direction.
Now, work done by the applied force is equal to the product of force applied and displacement of book in the direction of the applied force.
Therefore, work done is given as:
Therefore, the work done to raise a book to a height 2 m from the floor is 20 J.
C is your answer
A can’t be it Because it is Summer in the South Pole it cant be Summer in both South and North Pole or we would be in trouble
B can’t be it because it’s tilted toward the sun when it’s summer because it’s hot not cold there
D can’t be it because if the Northern Hemisphere were tilted towards the Sun it would be Summer there
...which means C is correct
Um student a because they were there a few seconds ahead