Answer:
<h2>A. 80 m/s </h2>
Explanation:
The velocity of the spacecraft can be found by using the formula
p is the momentum
m is the mass
From the question we have
We have the final answer as
<h3>80 m/s</h3>
Hope this helps you
Answer:
Value of is 7.466 ohm
Explanation:
Let emf of the battery is e
In first case when only is there current through battery is 2.2 A
So
......eqn 1
In second case current is reduced to 1.6 A when additional resistance of 2.8 ohm is added in series
So
....eqn 2
Fro eqn 1 and eqn 2
So value of is 7.466 ohm
B is the correct answer I believe
Answer:
Explanation:
The initial velocity of the baseball is:
From velocity of baseball;
Answer:
image is vertical at distance -203.62 cm
magnification is 2.110
Explanation:
given data
n = 1.51
distance u = 96.5 cm
concave radius r1 = 24 cm
convex radius r2 = 19.1 cm
to find out
final image distance and magnification
solution
we will apply here lens formula to find focal length f
1/f = n-1 ( 1/r1 - 1/r2) .......................1
put here all value
1/f = 1.51 -1 ( -1/24 + 1/19.1)
f = 183.43
so from lens formula
1/f = 1/v + 1/u .............................2
put here all value and find v
1/183.43 = 1/v + 1/96.5
so
v = −203.62 cm
so here image is vertical at distance -203.62 cm
and
magnification are = -v /u
magnification = 203.62 / 96.5
magnification is 2.110