Momentum is conserved it can be transferred but not lost. true or false

Calculate magnitude and direction of the force between a 1.4 X 10 -3 C charge and a 9.1 X 10 -4 charge when they are separated b

ASHA 777 [7]

Answer:

The magnitude and direction of the force between the two charges is 497.66 N in opposite direction.

Explanation:

From the question given above, the following data were obtained:

Charge 1 (q₁) = 1.4×10¯³ C

Charge 2 (q₂) = 9.1×20¯⁴ C

Distance apart (r) = 4.8 m

Force (F) =?

NOTE: Electric constant (K) = 9×10⁹ Nm²/C²

The magnitude of the force between the two charges can be obtained as follow:

F = Kq₁q₂ / r²

F = 9×10⁹ × 1.4×10¯³ × 9.1×20¯⁴ / 4.8²

F = 11466 / 23.04

F = 497.66 N

Thus, the magnitude of the force is 497.66 N.

Since both charges has the same sign (i.e they both positive), the force between them will be a force of repulsion. Hence the force will be in opposite direction.

5 0

2 years ago

A energy storage system based on a flywheel (a rotating disk) can store a maximum of 4.0 MJ when the flywheel is rotating at 20,

mariarad [96]

Answer:

Moment of inertia of the flywheel, $I=1.82\ kg-m^2$

Explanation:

Given that,

The maximum energy stored on flywheel, $E=4\ MJ=4\times 10^6\ J$

Angular velocity of the flywheel, $\omega=20000\ rev/s=2094.39\ rad/s$

We need to find the moment of inertia of the flywheel. The energy of a flywheel in rotational kinematics is given by :

$E=\dfrac{1}{2}I\omega^2$

I is the moment of inertia of the flywheel

On rearranging we get :

$I=\dfrac{2E}{\omega^2}$

$I=\dfrac{2\times 4\times 10^6}{(2094.39)^2}$

$I=1.82\ kg-m^2$

So, the moment of inertia of the flywheel is $I=1.82\ kg-m^2$ . Hence, this is the required solution.

8 0

3 years ago

Consider three starships that pass by an observer on Earth. Starship A is traveling at speed v=c/3v=c/3 relative to Earth and ha

Anna [14]

Answer:

The importance of learning is that it helps the individual to acquire the necessary skills through learning and knowledge so that he can achieve his set goals. An important fact about learning is that it is a means to improve knowledge and gain skills that will help in reaching specific goals.

Explanation:

The importance of learning is that it helps the individual to acquire the necessary skills through learning and knowledge so that he can achieve his set goals. An important fact about learning is that it is a means to improve knowledge and gain skills that will help in reaching specific goals.

6 0

3 years ago

Unpolarized light is incident upon two polarization filters that do not have their transmission axes aligned. If 38 % of the lig

deff fn [24]

Answer:

64°

Explanation:

See attached file