Answer:
Explanation:
Given that,
Mass of the astronaut, m = 70 kg
Mass of the spacecraft,
Acceleration of the astronaut,
To find,
The magnitude of the acceleration of the spacecraft.
Solution,
The force acting on the astronaut is given by :
During the push, the astronaut accelerates as a result a reaction force will also act on the spacecraft. Let is the acceleration of the spacecraft. It can be calculated as :
(reaction force)
Therefore, the magnitude of the acceleration of the spacecraft is . Hence, this is the required solution.
Interactions at the atomic level help us understand the observable properties of organisms and nonliving matter through the different processes and reactions which occur.
<h3>What is an Atom?</h3>
This is defined as the smallest form of how a chemical element can exist and has similarities to that of a cell.
The atomic level of the body is denoted as cells which work together to ensure the organism are able to perform various types of activities. This helps to ensure that the organism is better adapted and able to survive different types of factors.
Read more about Atomic level of organisms here brainly.com/question/21690142
#SPJ1
Answer:
Explanation:
A component of 150 N in vertical direction will reduce the magnitude of reaction force.
reaction force exerted by the floor
= mg - 150 sin 30
where m is mass of the crate .
the magnitude of the horizontal component of the 150-newton force
150 cos30
= 130 N
This force tries to pull the crate in forward direction with acceleration but it has no acceleration . It is so because frictional force of equal magnitude acts on it in opposite direction which makes the net force acting on it equal to zero.
Hence frictional force is equal to 150 cos 30.
= 130 N .
Answer:
Explanation:
The drawing is missing but we can still answer.
In fact, for a stone being whirled on a tabletop, the tension in the cord provides the centripetal force that keeps the stone in circular motion; therefore we can write:
where
T is the tension
m is the mass of the stone
v is the speed
r is the radius of the circle
For the first stone, we have
(1)
While for the second stone,
(2)
since m and v are identical for the two stones. We know that the first cord is longer, such that the radius of the circle in the 1st case is twice that of the second case:
So, substituting into (1),
which means that the tension in the longer cord is half the tension in the shorter cord.
I dont know but i think is A
i think that dont help but if is not that one tell me and im going to try again