Answer:
Electric energy is the answer
Explanation:
Just think
Answer:
Speed = 72.76mph
Explanation:
east direction signifies +
Therefore,
1515E -1125(45) = -2640
F = -2640×0.75 = -1980lbs
so,
-1980lbs = Ma
but m = 2640×g where g = 32.2 ft/s²
so,
a = -(1980/2640g) = -0.75×g = -24.15ft/s² = dv/dt
0 = V-24.15t
V =24.15t
22.5 = Vt -12.07t²
22.5 = 24.15t² - 12.07t² = 12.07t²
t = 1.37 seconds
Therefore,
V = 24.15 × 1.37 seconds = 33.1 ft/s
converting to mph gives
33.1 ft/s = 22.6 mph
now back to momentum
1515 E -1125(45) = 2640 V
1515 E = 50625+59664
Speed = 72.76 mph
<span> </span>Most of the stars in the Milky Way will end their lives as white dwarfs
Answer:
0.248 m
Explanation:
The period of a simple pendulum is given by
where
L is the length of the pendulum
g is the acceleration of gravity
The pendulum in the problem passes its lowest point twice every second: this means: this means that it makes one complete oscillation in one second, so its period is 1 second:
T = 1 s
And using
We can rearrange the equation above to find L, the length of the pendulum:
The field is
<em><u>E</u></em> = 1 / (4 pi ε₀) Q / <em><u>R</u></em>² directed radially outward from
the center of the shell.
R is the radius of the spherical shell.
Notice that the field is exactly the same as the field due to a point-charge
with magnitude 'Q' that's located at the center of the sphere.