Answer:
<em>The recoil velocity of the cannon is 7.61 m/s in the opposite direction of the cannonball</em>
Explanation:
<u>Linear Momentum
</u>
The principle of conservation of the linear momentum establishes that the sum of the linear momentums of every object in an isolated system (no external forces) is constant, regardless of the interactions between them.
Let's think we have two objects with masses and , moving at speeds and . If they collide and change their speeds to and , then
In our problem, the 880 kg cannon is initially at rest and has the cannonball of 12.4 Kg inside of it. As the initial speed of both joined objects is zero, the initial total momentum is zero. After the ball is fired, the ball moves at v_2=540 m/s. We need to find the recoil velocity of the cannon
The recoil velocity of the cannon is 7.61 m/s in the opposite direction of the cannonball
In order to find the density of the object, you need the mass and the volume. Here you have only supplied the mass, so we do not have enough information to calculate the density.
The answer is tropical climate or a.
Answer:
D
Explanation:
Snell's law states:
n₁ sin θ₁ = n₂ sin θ₂
where n is the index of refraction and θ is the angle of incidence (relative to the normal).
The index of refraction of air is approximately 1. So:
1 sin 40° = n sin 25°
n ≈ 1.52
<h3><u>Answer;</u></h3>
- A moving electric charge creates a magnetic field at all points in the surrounding region.
- An electric current in a conductor creates a magnetic field at all points in the surrounding region.
- A permanent magnet creates a magnetic field at all points in the surrounding region.
<h3><u>Explanation;</u></h3>
- A magnetic field can be created by running electricity through a wire. All magnetic fields are created by moving charged particles. it is important to also note that charged particles create magnetic fields only when they are moving.
- The strength of the magnetic field generated or created is proportional to the amount of current flowing through the wire. Thus, increasing the current increases the strength of the magnetic field.