0.425
BECAUSE 1000g makes 1Kg
so 425g will make 0.425 option a
Answer: A gem is a stones that is used to make jewelry. A crystal is apure substance that has molecules arranged in "a regular geometric pattern". A gem can also be a crystal, whereas a crystal can not be a gem. Crystals of minerals are classified mainly according to their crystal systems such as cubic, hexagonal, tetragonal, orthorhombic, monoclinic and triclinic, depending on the relationship between the crystal faces and their angles. Each crystal of a particular mineral has its own crytal system.
Explanation:
Answer:
(a) Magnitude of static friction force is 109 N
(b) Minimum possible value of static friction is 0.356
Solution:
As per the question;
Horizontal force exerted by the girl, F = 109 N
Mass of the crate, m = 31.2 kg
Now,
(a) To calculate the magnitude of static friction force:
Since, the crate is at rest, the forces on the crate are balanced and thus the horizontal force is equal to the frictional force, f:
F = f = 109 N
(b) The maximum possible force of friction between the floor and the crate is given by:
where
N = Normal reaction = mg
Thus
For the crate to remain at rest, The force exerted on the crate must be less than or equal to the maximum force of friction.
Answer:
c. earth is a satellite of the sun
Explanation:
a satellite is an object that moves around a larger object therefore the earth is a satellite of the sun
Answer: The answer is C. Find the slope of the tangent at any point.