Answer:
answer is 2 and 6 on edge2020, sorry that its a week late
Explanation:
Explanation :
(1) The path of motion of a thrown javelin is an example of projectile motion. It is a type of motion that is experienced by an object that is thrown near the earth's surface. The object then moves along a curved path under the influence of gravity.
(2) Force is the product of mass and velocity i.e. F = ma
So,
Hence, the acceleration of an object is equal to net<em> force</em> acting on the object dividing by the objects<em> mass.</em>
(3) The pressure exerted by a fluid at any given depth is exerted <em>uniformly </em>in all directions.
(4) Mass of canoe, m = 38 Kg
velocity of canoe, v = 2.2 m\s
momentum is given by, p = mv
So, momentum of canoe is 83.6 Kgm/s
(5) Acceleration is given by the rate of change of velocity per unit time. If is final velocity and is initial velocity,
Then change in velocity will be
since,
So,
The cause for a molecular cloud forming fragments when it collapses is indicated correctly by option D. density variations from place to place grow larger as the cloud collapses.
Molecular cloud:
A molecular cloud, also known as a stellar nursery, is a specific kind of interstellar cloud, whose density and size allow the development of molecules, absorption nebulae, and H II regions. In contrast, some regions of the interstellar medium mostly consist of ionized gas.
Molecular clouds are cold, dense areas of space where stars form. The cloud collapses into a proto-star when the gravitational force pulling it in outweighs the internal pressure pushing it in.
When a molecular cloud collapses, it is observed that the density varies from place to place with the variation increasing with collapse. As a result, the collapse is characterized by fragmentation of the cloud.
Thus the correct option is: D. density variations from place to place grow larger as the cloud collapses.
Learn more about molecular clouds,
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Answer:
The kinetic energy is
Explanation:
From the question we are told that
The potential difference is
The potential energy of the end is mathematically represented as
q is the charge on an electron with a constant value of
substituting values
Now from the law of energy conservation
The
Where is the potential energy at the end
So
The negative sign is not includes because kinetic energy can not be negative
<u>Answer:</u> The new pressure will be 1.69 atm
<u>Explanation:</u>
Gay-Lussac's law states that the pressure of the gas is directly proportional to the temperature of the gas at constant volume and the number of moles.
Mathematically,
(At constant volume and number of moles)
OR
.....(1)
are the pressure and temperature of the gas
are the final pressure and temperature of the gas
We are given:
Putting values in equation 1, we get:
Hence, the new pressure will be 1.69 atm