The solution to your problem is as follows:
2.2Kg*9.8m/s = 21.56N
<span>
21.56N*1.25m = 26.95J </span>
<span>We're only concerned with the work done against gravity, lifting the books to 1.25 meters. the distance walked has no effect on the problem, unless you take into account the wind resistance and the force needed to overcome it. Also, lowering the books onto the shelf doesnt count, because gravity does the work on the books.</span>
Answer:
the answers the correct one is a 4
Explanation:
The centripetal acceleration is by
a = v² / R
angular and linear velocities are related
v = w R
let's substitute
a = w² R
for initial condition
a₀ = w₀² R
suppose the initial angular velocity is wo, suppose the angular velocity doubles
a = (2w₀)² R
a = 4 (w₀² R)
a = 4 a₀
when reviewing the answers the correct one is a
Answer:
1.94 x 10^-10 m
Explanation:
V = 40 V
The relation for the de broglie wavelength and teh potential difference is given by
λ = 1.94 Angstrom = 1.94 x 10^-10 m
Answer: 9 m
Explanation:
Work is said to be done when an unbalanced force causes displacement of the body.
Force is the product of mass (m) and acceleration (a).
Work = Force × Displacement
⇒W = F.s = ma.s
It is given that mass of the dresser is, m = 250 kg
work done, W = 126 J
Force acting on the dresser, F = 14 N
we need to find displacement, s
⇒126 J = 14 N × s
⇒ s = 126 J/ 14 N = 9 m
Hence, Laurie is able to move the dresser to about 9 m.
Hes ur clothes ur andwer is 27374747488
