Answer:
so the height will be increased by 9 times
Explanation:
The truck is in its pontential energy at rest
The potential energy is converted to kinetic energy when in motion
Given that,
h = height of the hill
m = mass of the truck
g = acceleration due to gravity
v = velocity of the truck at the bottom of the hill.
At the top of the hill,
Potential energy(PE) = mgh
Kinetic energy(KE) = 0
Total energy, E = PE + KE = mgh + 0 = mgh____(1)
At the bottom of the hill :
Potential energy, PE = 0
Kinetic energy,KE = (1/2)mv²
Total energy, E = PE + KE
= 0 + (1/2)mv²_____(2)
In law of conservation of energy,
(1) = (2)
mgh = (1/2)mv²
h = (1/2g)v²
given,
v = 2 m/s
g = 9.81 m/s²
h = (1/2(9.81)) × 2²
h = 0.20 m
so,
if v = 6 m/s
h = (1/2(9.81)) × 6²
h = 1.83 m
from the first h = 0.20m and the second h = 1.83m
1.83m / 0.20m
= 9.15
so the height will be increased by 9 times
Answer:
The new current in the wire is 6.3 A.
Explanation:
Given that,
Force in a straight wire, F = 0.023 N
Current in the wire, I = 2.5 A
If new force is, F' = 0.058 N, we need to find the new current.
We know that, magnetic force is given by :
It is clear that force is directly proportional to electric current. So, we can say:
I' is new current
So, the new current in the wire is 6.3 A. Hence, this is the required solution.
Answer:
When the velocity is set to a constant value, the displacement increases with time but the acceleration remains zero
Explanation:
plato
The gravitational force exerted on the satellite is called the centrifugal force, the force keeping it orbiting to the planet. Its formula is F= mass times the square of the velocity all over the radius.Thus,
F = 2400 * 6670^2 * (1/8.92x10^6)
F = 11,970 N
I hope I was able to help you. Have a good day.
Answer:
2.28 cm
Explanation:
Radius of the proton if v and B is perpendicular will be,
Now,
mass of proton, .
Radius of the orbit, .
Magnetic field, .
Charge on the proton, .
Now substitute all the variables in r.
.
.
Therefore the radius of the orbit of moving proton is 2.28 cm.