If the applied force is in the same direction as the object's displacement, the work done on the object is:
W = Fd
W = work, F = force, d = displacement
Given values:
F = 45N
d = 12m
Plug in and solve for W:
W = 45(12)
W = 540J
Answer:
Pushes and pulls refer to the force that attracts or repels certain other materials without actually touching them.
Explanation:
Pushes and pulls are the forces exerted by the magnet on certain materials around it without, actually touching them. This push and pull is exerted through a region around the magnet called its magnetic field. The strength of this push and pull force is determined by, the strength of the magnetic field. A strong push or pull force is exerted by a strong magnetic field, and in turn a strong magnet and, a weak push and pull force is exerted by a weak magnetic field and, in turn a weak magnet. A push force is a repulsion while a pull force is an attraction. When a magnetic object is in the region of the magnetic field, it either attracts or is repelled away from the source of the magnetic field.
The correct answer is C july-september plz mark as brainliest!
B
add them all by direction
13 East
10 West
subtract difference
3 E
Answer:
1). ![v = - 2960526m/s](https://tex.z-dn.net/?f=v%20%3D%20-%202960526m%2Fs)
2). Toward us
3). ![v = - 493421m/s](https://tex.z-dn.net/?f=v%20%3D%20-%20493421m%2Fs)
4). Toward us
5). ![v = 1480263m/s](https://tex.z-dn.net/?f=v%20%3D%201480263m%2Fs)
6). Away from us
7). ![v = 3207236m/s](https://tex.z-dn.net/?f=v%20%3D%203207236m%2Fs)
8). Away from us
Explanation:
Spectral lines will be shifted to the blue part of the spectrum if the source of the observed light is moving toward the observer, or to the red part of the spectrum when it is moving away from the observer (that is known as the Doppler effect).
The wavelength at rest is 121.6 nm (
)
![Redshift: \lambda_{measured} > \lambda_{0}](https://tex.z-dn.net/?f=Redshift%3A%20%5Clambda_%7Bmeasured%7D%20%3E%20%5Clambda_%7B0%7D%20)
Then, for this particular case it is gotten:
Star 1: ![\lambda_{measured} = 120.4nm](https://tex.z-dn.net/?f=%5Clambda_%7Bmeasured%7D%20%3D%20120.4nm)
Star 2:
Star 3:
Star 4:
Star 1:
Toward us
Star 2:
Toward us
Star 3:
![Redshift: 122.2nm > 121.6nm](https://tex.z-dn.net/?f=Redshift%3A%20122.2nm%20%3E%20121.6nm%20)
Away from us
Star 4:
![Redshift: 122.9nm > 121.6nm](https://tex.z-dn.net/?f=Redshift%3A%20122.9nm%20%3E%20121.6nm%20)
Away from us
Due to that shift the velocity of the star can be determine by means of Doppler velocity.
(1)
Where
is the wavelength shift,
is the wavelength at rest, v is the velocity of the source and c is the speed of light.
(2)
<em>Case for star 1
:</em>
<em></em>
Notice that the negative velocity means that is approaching to the observer.
<em>Case for star 2
:</em>
<em>Case for star 3
:</em>
<em>Case for star 4
:</em>