B. Electrical energy

Among the choices given, the type of energy associated with
electric currents is electrical energy. By its definition, electric current is
the flow of charged particles through a conductor or a conduction medium, for
example, a wire. Basically, it involves electricity. It is similar to water current
but instead of water molecules, charged particles move down a conductor. These
charged particles are mostly electrons which move freely and at random. When
all the free electrons move in the same direction, a current is created.

**Answer: **

**Explanation:**

For this exercise you can use the Pythagorean theorem to find the magnitude of the resultant displacement.

Then:

You can observe that the square of the displacement is equal to the sum of the square of the horizontal displacement and the square of the vertical displacement.

Since the pirate walks 37.0 meters north and then turns and walks 8.5 meters east:

Substituting values and solving for "d", you get:

**8 x 10^8 = 800,000,000**

In Scientific Notation, your goal is to get your the number you're multiplying by 10 (8 in this case) to be between 0 and 10. Therefore, you would **NOT **have 80 x 10^7 because 80 is not between 0 and 10.

Answer:

9 N

Explanation: Given that L = side of the cube = 10cm = 0.1m

Mass = Density * Volume

Let’s determine the volume of the cube in m^3.

V = L^3

V = 0.1^3 = 0.001m^3

Mass = 0.001 * 2.053 * 10^4 = 20.53kg

Weight = 20.53 * 9.8 = 201.194

Buoyant force = 201.194 – 192 = 9.194 N

This is approximately 9 N.

**Both the man and the woman will be experiencing the same impulse, due to Newton's third law of motion.**

**Explanation:**

This problem considers law of conservation of momentum as well as **Newton's third law of motion**. As per the third law of motion, every action has an **equal and opposite reaction**. And the law of conservation of momentum states that the momentum is conserved after collision.

Since, here the woman is kneeling on the man, it is similar to **inelastic collision **where the man and woman are moving with same velocity. And as the **man accelerates the woman,** the **woman **will exhibit a** forward force. **While **at the same time**, the **man will be experiencing a backward force** of **same magnitude **as of the woman. This is** in consistence **with the** third law of motion.**

So both the **man and woman will experience force of same magnitude** but** opposite in direction.** As **impulse is directly proportional to the force **acting on any object in a given duration, so both the **man and the woman will be experiencing the same impulse.**