The force between to objects of charge +Q and -2 Q, respectively, is measured as -2F. If the charge on the first object is doubled and the distance between the objects is doubled
<u>b.-2f </u>
Answer:
Explanation:
In space, rockets zoom around with no air to push against. ... When a rocket shoots fuel out one end, this propels the rocket forward — no air is required. NASA says this principle is easy to observe on Earth. If you stand on a skateboard and throw a bowling ball forward, that force will push you and the skateboard back.
Answer:
Charges are transferred from one object to another.
Explanation:
The charges from one object to another are sharing there energy.
Answer:
18,316.2
Explanation:
The formula for GPE is mgh, where
M = Mass of the object
G = Acceleration due to gravity (9.8 m/s^2 on Earth)
H = Height above ground
890 × 9.8 × 2.1 = 18,316.2
Answer:

Explanation:
given,
rotational inertia, I = 474.0 kg·m²
decrease in angular velocity
ω₁ = 26.2 rad/s ω₂ = 0 rad/s
time = 204 s
torque = ?



α = 0.128 rad/s²



frictional torque acting by the flywheel is equal to 60.88 N.m