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Bogdan [553]
3 years ago
9

2. A body moves with a uniform speed of 1.5 ms-1 for 20 seconds. Find the distance covered by it.

Physics
1 answer:
mestny [16]3 years ago
7 0

Answer:

30 m

Explanation:

The speed is uniform, so there's no acceleration.  Therefore:

Distance = rate × time

d = 1.5 m/s × 20 s

d = 30 m

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Three identical 6.0-kg cubes are placed on a horizontal frictionless surface in contact with one another. The cubes are lined up
Westkost [7]

Answer:

24 N

Explanation:

m = mass of the cube = 6.0 kg

Consider the three cubes together as one.

M = mass of the three cubes together = 3 m = 3 (6.0) = 18 kg

a = acceleration of the combination = 2 ms⁻²

F = Force applied on the combination

Using Newton's second law

F = ma = (18) (2) = 36 N

F_{L} = Force by the left cube on the middle cube

Consider the forces acting on left cube, from the force diagram, we have

F - F_{L} = ma \\36 - F_{L} = (6) (2)\\F_{L} = 24 N

4 0
3 years ago
In a series RLC ac circuit, a second resistor is connected in series with the resistor previously in the circuit. As a result of
AnnyKZ [126]

Answer:

* The first thing we observe is that the frequency response does not change

* The current that circulates in the circuit decreases due to the new resistance at the resonance point,

          Z = R + R₂

Explanation:

The impedance of a series circuit is

          Z₀² = R² + (X_L-X_C) ²

when we place another resistor in series the initial resistance impedance changes to

          Z² = (R + R₂) ² + (X_L - X_C) ²

           

let's analyze this expression

* The first thing we observe is that the frequency response does not change

* The current that circulates in the circuit decreases due to the new resistance at the resonance point,

          Z = R + R₂

8 0
3 years ago
The North Star is located in the Big Dipper. True or False
harina [27]

Answer:

False

Explanation:

It is located in the little dipper whose stars are more faint.

4 0
3 years ago
Read 2 more answers
In the chemical formula for an ionic compound, which item is written first?
tatuchka [14]

Explanation:

C,

.hahxxjdndjdndjgfndkndidjdodnxondos

5 0
2 years ago
Rachel hits a golf ball into the air. What type of motion is the ball's path?
sladkih [1.3K]

Answer:

omg

the ground is BREAKING

Explanation:

5 0
2 years ago
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