Answer:
Explanation:
In projectile motion , formula for range is as follows
R = u² sin 2 α / g , where u is initial velocity of throw , α is angle of throw
Given R , range = 30 yards , α = 10°
30 = u² sin 20 / 9.8
u² x .342 = 294
u² = 859.65
u = 29.32 m / s
Answer:
Explanation:
We shall apply Gauss's theorem to calculate the electric flux through a closed surface due to charge contained in side
Total charge inside surface = zero
So total electric flux through closed surface will be zero.
or electric flux going out = electric flux coming in
(a) The electric field is zero everywhere on the surface. True
(b) The electric field is normal to the surface everywhere on the surface. - false
(c) The electric flux through the surface is zero. True
(d) The electric flux through the surface could be positive or negative - false
(e) The electric flux through a portion of the surface might not be zero - True
When the space shuttle was still in service it operated in orbits with different altitudes. The force of gravity between the Earth and the orbiting shuttle would have been between 85% and 90% of its value on the surface.
The wording of this can be bothersome. I think you should be using
E = F * d
E = 68 J
d = 12 m
F = ???
68J = F * 12 m
68J/12 m = F
5.67 N
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