Answer:
<h2>The input force is 87.27N</h2>Explanation:
Mechanical advantage (M.A)of a machine is the ratio of load to effort
<h2>Given</h2>M.A= 5.5
load= 480N
effort= ?
Applying the formula and substituting to find the effort we have
The velocity of a car decreases from 28m/s to 20m/s in a time of 4 seconds. what is the average acceleration of the car in this
1 answer:
You might be interested in
Answer
given,
distance = 200 m
radius of curvature = 35 m
time = 30 s
centripetal acceleration = ?
speed of the runner
v = 5.71 m/s
acceleration of the runner
Answer:
E=0.036 V/m
Explanation:
Given that
Resistivity ,ρ=2.44 x 10⁻⁸ ohms.m
d= 0.9 mm
L= 14 cm
I = 940 m A = 0.94 A
We know that electric field E
E= V/L
V= I R
R=ρL/A
So we can say that
E= ρI/A
Now by putting the values
E=0.036 V/m
Answer:
U = 80.91 J
Explanation:
In order to calculate the electric potential energy between the three charges you use the following formula:
(1)
k: Coulomb's constant = 8.98*10^9Nm^2/C^2
q1: q2 charge
r1,2: distance between charges 1 and 2.
For the three charges you have:
(2)
You use the fact that q1=q2=q3=q and that the distance between charges are equal. Then, in the equation (2) you have:
q = 1.45μC = 1.45*10^-6C
r = 0.700mm = 0.700*10^-3m
The electric potential energy between the three charges is 80.91 J