A(an) ________ complex refers to the feeling that one lacks worth and doesn't measure up to the standards of others or of societ
2 answers:
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1) X-component: 568.5 N, Y-component: 511.9 N
2) The horizontal force is 86.6 N and the resulting acceleration is
Explanation:
1)
In this first part of the problem, we have to resolve the force into its two components, along the x and the y direction.
The two components are given by:
where
F = 765 N is the magnitude of the force
is the angle of the force with the horizontal
Substituting, we find:
- Horizontal component:
- Vertical component:
2)
First of all, we have to find the horizontal component of the pulling force, which is given by
where
F = 100 N is the magnitude of the pulling force
is the direction of the force with the horizontal
Substituting,
Now we can find the acceleration of the wagon by using Newton's second law:
where
is the net force in the horizontal direction
m = 100 kg is the mass of the wagon
is the acceleration in the horizontal direction
Solving for , we find
Learn more about vector components:
And about Newton's second law:
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Answer:
6.63 x 10⁵ m/s
0.16 x 10⁵ m/s
Explanation:
= mass of the electron = 9.11 x 10⁻³¹ kg
= mass of the proton = 1.67 x 10⁻²⁷ kg
= speed of electron
= speed of proton
= Kinetic energy of electron = 1.25 eV = 1.25 x 1.6 x 10⁻¹⁹ J
Kinetic energy of electron is given as
= 6.63 x 10⁵ m/s
Kinetic energy of proton is given as
= 0.155 x 10⁵ m/s
Answer:
a. about 20 years younger
b. Malcolm sits around for 49.94 years
c. <em>2.268x</em><em> m</em>
Explanation:
light travels 3x m in one seconds
in 20 years that will be 3x x 20 x 60 x 60 x 24 x 365 = 1.89x
m
for the to and fro journey, total distance covered will be 2 x 1.89x = 3.78x
m
Flo's speed = 80% of speed of light = 0.8 x 3x = 2.4x
m/s
time that will pass for Malcolm will be distance/speed = 3.78x /2.4x
= 1575000000 s = <em>49.94 years</em>
the relativistic time t' will be
t' = t x
t' = 49.94 x
t' = 49.94 x 0.6 = <em>29.96 years</em> this is the time that has passed for Flo
this means that<em> Flo will be about 20 years younger than Malcolm when she returns</em>
<em></em>
relativistic distance is
d' = d x
d' = 3.78x x
d' = 3.78x x 0.6
d' = <em>2.268x</em><em> m</em> this is how far it is to Flo