**Answer:**

**Output power of the circuit is 3 Watt.**

**Given:**

loss in decibles = 3 dB

Input power = 6 Watt

**To find:**

Output power = ?

**Formula used:**

Output power = Input power × loss in ratio

**Solution:**

3 dB loss = 0.5 ratio

Output power is given by,

Output power = Input power × loss in ratio

Output power = 6 × 0.5

Output power = 3 Watt

**Thus, output power of the circuit is 3 Watt.**

**Answer:**

c.

**Explanation:**

= Initial distance between asteroid and rock = 7514 km = 7514000 m

= Final distance between asteroid and rock = 2823 km = 2823000 m

= Initial speed of rock = 136 ms⁻¹

= Final speed of rock = 392 ms⁻¹

= mass of the rock

= mass of the asteroid

Using conservation of energy

Initial Kinetic energy of rock + Initial gravitational potential energy = Final Kinetic energy of rock + Final gravitational potential energy

**Answer:**

2.72*10-3 Joules

**Explanation:**

From Newton's second law of motion

F=ma

given

the angular velocity is