The Young’s modulus of polythene is 0.8
Answer:
<em> The momentum of the body would be 13500 kg .m/sec</em>
Explanation:
What Momentum Entails
momentum is a property that is possed by all moving objects, it is a product of mass and velocity. A moving object has a magnitude which is the mass of the body and direction which is the velocity towards a certain direction, so it is a vector quantity
Step by Step Calculation
The momentum of a body can be gotten from the expression below;
p = m x v
where p is the momentum
m is the mass of the body = 1000 kg
v is the velocity = 13.5 m/sec
Given these parameters our momentum would be;
p = 1000 kg x 13.5 m/sec
p = 13500 kg . m/sec
Therefore the momentum of the body would be 13500 kg. m/sec
Answer
From the question we can see that the in medium 1 speed of light is 200,000 Km/s where as in Medium 2 speed of light is 250,000 km/s.
We can conclude that medium 1 is denser than Medium 2.
In third medium Light speed halts so, the third medium is opaque.
We can say that
Medium 1 can be either water, glass.
Medium 2 will be gas
Medium 3 will be an opaque material.
Answer:
They walk 3,600 meters
Explanation:
7.5 minutes = 450 seconds.
Because they are walking at 8 meters per 1 second, multiply 8 by 450.
= 3600m
The gravitational force on the woman is A) 500 N
Explanation:
There are two forces acting on the woman during her fall:
- The force of gravity,
, acting downward - The air resistance,
, acting upward
According to Newton's second law, the net force acting on the woman is equal to the product between the woman's mass and her acceleration:
where m is the mass of the woman and a her acceleration.
The net force can be written as
Also, we know that the woman falls at a constant velocity (5 m/s), this means that her acceleration is zero:
Combining the equations together, we get:
which means that the magnitude of the gravitational force is equal to the magnitude of the air resistance:
Learn more about forces and Newton's second law:
brainly.com/question/3820012
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