3 years ago

Identify the chemical change below

Physics

1 answer:

lesya [120]3 years ago

5 0

Imma say go with C (:

You might be interested in

Can at transform plate boundaries, two plate move toward each other true or false

nekit [7.7K]

the answer to the question is false

7 0

3 years ago

A neutron star is moving in outer space at 4,000 km/hr. What happened to the star that set it in motion on it's current course?

astra-53 [7]

Answer:

a balanced force acted on it and propelled it to 4,000 km/hr

Explanation:

For the neutrons star which is moving in outer space at 4,000 km/hr, it could only be possible as a result of the balanced force which had already acted on it. <em>This is based on newton's law of motion which states that 'To every action, there is equal and opposite reaction'. </em>

4 0

3 years ago

Experiments using "optical tweezers" measure the elasticity of individual DNA molecules. For small enough changes in length, the

GalinKa [24]

Answer:

Spring constant, k = 0.3 N/m

Explanation:

It is given that,

Force acting on DNA molecule, $F=1.5\ nN=1.5\times 10^{-9}\ N$

The molecule got stretched by 5 nm, $x=5\times 10^{-9}\ m$

Let k is the spring constant of that DNA molecule. It can be calculated using the Hooke's law. It says that the force acting on the spring is directly proportional to the distance as :

$F=-kx$