Answer:
Magnetic field,
Explanation:
It is given that,
Speed of proton,
Mass of the proton,
Charge on proton,
We need to find the magnetic field strength required to just balance the weight of the proton and keep it moving horizontally.
The Lorentz force is given by :
.............(1)
The weight of proton,
..............(2)
From equation (1) and (2), we get :
Hence, this is the required solution.
99.0km/h =27.5m/s (this is the initial speed)
The final speed is zero
The distance is 50.0m
Therefore you use the formula:
vfinal²=vinitial²+2ad
a=(vfinal²-vinitial²)/2d
= (0²-27.5²)/(2x50.0)
=-7.5625 or in correct sigdigs -7.56m/s²
Hope this helps!
Answer:
Dog
Explanation:
(Mass)(velocity) > (Mass delta) (velocity delta)
Answer:
The magnetic flux through a loop is zero when the B field is perpendicular to the plane of the loop.
Explanation:
Magnetic flux are also known as the magnetic line of force surrounding a bar magnetic in a magnetic field.
It is expressed mathematically as
Φ = B A cos(θ) where
Φ is the magnetic flux
B is the magnetic field strength
A is the area
θ is the angle that the magnetic field make with the plane of the loop
If B is acting perpendicular to the plane of the loop, this means that θ = 90°
Magnetic flux Φ = BA cos90°
Since cos90° = 0
Φ = BA ×0
Φ = 0
This shows that the magnetic flux is zero when the magnetic field strength B is perpendicular to the plane of the loop.
Answer:
Explanation:
The loss of gravitational potential energy must be equal to the gain of kinetic energy since there are no other interactions at play (no friction, etc).
We know that the change of potential energy will be written as , where <em>h</em> is the difference between the different heights.
We know that the change of kinetic energy will be written as , where <em>v</em> is the final velocity and we have assumed it departs from rest.
We then have:
We transform km/h to m/s by multiplying by the conversion factors (which are equal to 1, so don't alter the result):
So for our values we have:
to three significant figures.