Hi Gonnah,
W=qΔV
W= q(-70-130)
q of proton look it up and plug in and find out
it should be negative since you are doing work form greater potential to lower
He would earn $60 more dollars making it $960 for washing 30 windows this month.
Hope this helps :)
Answer:
the angular velocity is the same for both.
Explanation:
Angular velocity is defined by the change in angle between time
w = Δθ /Δt
As the arm and elbow are on the same axis the two rotate the same angles, therefore the angular velocity is the same for both.
This does not happen with linear speed
v = w r
therefore as the hand has a greater radius its greater linear speed
Traalate
La velocidad angular es definida por el cambio del angulo entre el tiempo
w= Δθ/ΔDt
como el brazo y el codo están en el mismo eje los dos girar los mismo ángulos, por lo tanto la velocidad angular es la misma para los dos.
Esto no pasa con la velocidad lineal
v = w r
por lo tanto como la mano tiene un radio mayor su velocidad lineales mayor
Answer:
H' = H/4
Explanation:
By applying the law of conservation of energy to this problem, we know that:
Elastic Potential Energy Stored by Spring = Gravitational Potential Energy of ball
(1/2)kx² = mgH
H = (1/2)kx²/mg -------------- equation (1)
where,
H = Height reached by the ball
x = compression of spring
k = stiffness of spring
m = mass of ball
g = acceleration due to gravity
Now, if we make the compression to half of its value:
x' = x/2
then:
H' = (1/2)k(x/2)²/mg
H' = (1/4)(1/2)kx²/mg
using equation (1), we get:
<u>H' = H/4</u>
Velocity:
60 meters/ 5 seconds= 12 meters/second
Velocity=12meters/second
(60 meters divided by 5 seconds equals 12 meters per second)
Hope this helps!
