Apollo 13, space Odyssey and star trek
Answer:
7.037 m/s
Explanation:
According to the law of energy conservation;
The total of the initial K.E = The total final K.E
This expression implies that:
By simplifying the above expression;
where;
g = 9.81 m/s²
h = 2.50 m
u = 0.68 m/s
∴
v = 7.037 m/s
Answer:
Explanation:
= Charge at 3000 m = 40 C
= Charge at 1000 m = -40 C
= 3000 m
= 1000 m
k = Coulomb constant =
Electric field due to the charge at 3000 m
Electric field due to the charge at 1000 m
Electric field at the aircraft is .
Answer:
-1.65
Explanation:
First of all, we find the position of the image by using the lens equation:
where:
f is the focal length of the lens
p is the distance of the object from the lens
q is the distance of the image from the lens
For the lens in this problem:
f = 21.0 cm (the focal length of a convex lens is positive)
p = 33.7 cm
Solving for q, we find the position of the image:
Then, the magnification of the image is given by:
And substituting,
Which means that the image is inverted (negative sign) and enlarged (because M is larger than 1).