Answer:
Speed, u = 29.4 m/s
Explanation:
Given that, A ball thrown straight up climbs for 3.0 sec before falling, t = 3 s
Let u is speed with which the ball is thrown up. When the ball falls, v = 0
Using first equation of motion as :
v = u + at
Here, a = -g
So, u = g × t
u = 29.4 m/s
So, the speed with which the ball was thrown is 29.4 m/s. Hence, this is the required solution.
Answer:
1 m
Explanation:
Given that
Mass of the child, m = 15 kg
Distance of the pivot, d = 1.5 m
Force applied, F = 220 N
To solve this problem, we first need to find the torque around the pivot.
Torque, t = mgd, where
m is the mass of the child
g is the acceleration due to gravity and
d is the distance of the pivot.
Thus, we can say that the torque is
T = 15 * 9.8 * 1.5
T = 220.5 Nm
This torque we have gotten would be used to find the distance, using the inverse of the equation.
T = F * d
d = T / F
d = 220.5 / 220
d = 1 m
Therefore, the minimum distance on the other side of the pivot required is 1 m
The complementary color of a red-violet focal point is <span>yellow-green.
The complementary colors are </span>colors which appear opposite each other on the color wheel. These colors complete each other on the color spectrum. <span>Complementary colors have the ability to increase intensities when used next to each other.</span>
The only thing you need to know in order to solve this task is that <span>plank length (which is force x), should equal the increase in potential energy, so what we have now : (mass)* g * (height).
It has to look like that: </span>
<span>F * 3.0 = 150 x 9.81 x 1.20
Then solve for F, the result should be in newtones = 588N
Do hope it makes sense.</span>
To answer the problem we would be using this formula which is I(peak) = P(peak)/(4πd^2) = 4.24413181578388 w/m^2
E = sqrt(I(peak)*Z0) = 39.9861614728793 V/m
B = µ0*sqrt(I(peak)/Z0) = 1.33379477721328E-7 T
(Free-space impedance Z0 = sqrt(µ0/e0) = 376.730313462204 ohms)