Answer:
53.36 m.
Explanation:
Initial velocity of the toolbox u = 0
acceleration due to gravity g = 9.8 m s⁻²
time t = 3.3 s
height of roof h = ?
h = ut + 1/2 g t²
= 0 + .5 x 9.8 x 3.3²
= 53.36 m.
D. diamond, is the best option..
Answer:B
Explanation:
Given
man is unable to lift the suitcase thus
Magnitude of Normal reaction will weight minus magnitude of force pull
From FBD
Where F=Pull Force
N=Normal reaction
Polystyrene
is a mixture substance.
<span>Polystyrene is a flexible
plastic used to cater to different products ranging from food tupperwares to
appliances. It is created by putting together, or polymerizing, styrene (building-block
chemical and naturally existed in foods like strawberries, cinnamon, coffee and
beef). When hard, it is used to make food packaging and laboratory equipments.
When put together with different colors, additives or even plastics, it helps
in making electronics, automobile parts, toys, appliances, gardening pots and
equipment and many more</span>
Answer:
742.3N
Explanation:
Given parameters:
Distance = 39m
Mass 1 = 9.2 x 10⁷kg
Mass 2 = 1.84 x 10⁸kg
Unknown:
Gravitational force between the ships = ?
Solution:
To solve this problem, we apply the newton's law of universal gravitation:
Fg =
G is the universal gravitation constant = 6.67 x 10⁻¹¹
r is the distance or separation
Fg = = 742.3N