Answer:
B. Increase the electric force by rubbing the balloon for a longer period of time.
Explanation:
Yes it can, if the air pressure is low enough.
F = m * a
F = 15 kg * 8 m/s²
F = 120 N
Answer B
hope this helps
Answer:
686 days for sideral period of Mars.
615 days for synodic period of Venus.
Explanation:
The equations we need to use is:
Where P is the sidereal period, S the synodic period and E the Earth's period (365 days) and where the + is used for inferior planes (Venus) and the - for superior ones (Mars).
For the sidereal period of Mars we then have:
And for the synodic period of Venus we then have:
(Commonly for Venus a sidereal period of 225 days is given, which changes this result to 587 days).
The maximum torque that can act on the loop is 7.875 N-m.
Torque:
Torque is a twisting or turning force that tends to cause rotation around an axis, which might be a center of mass or a fixed point. Torque can also be thought of as the ability of something that is rotating, such as a gear or a shaft, to overcome turning resistance.
The formula of torque:
Torque(T) = I B A
B = magnetic field of intensity
I = current =
A = area of the wire
l = length of the wire
l = 2πr
r = l/2π
A = πr²
= π(l/2π)²
= l²/4π
T = l²/4π IB
=( 1/4π) BIl²
= (1/4π) 0.30 × 150 ×× 2.20
= 7.875 N-m
Therefore the torque is 7.875 N-m.
To know more about the Torque refer to the link given below:
brainly.com/question/1691855
#SPJ4