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yanalaym [24]
3 years ago
10

a force of 20 N acted on a ball thereby imparting an impulse of 70 Ns to the ball. For how long did the force act on the ball?

Physics
1 answer:
Alex3 years ago
3 0
50n which would be 5 seconds?
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Consider the displacement vectors Ā=(i +6j)m, B = (3i– 7j)m,
andrezito [222]

Answer:

Dx = -0.5

Dy = -0.25

Explanation:

Two vectors are given in rectangular components form as follows:

A = i + 6j

B = 3i - 7j

It is also given that:

A - B - 4D = 0

so, we solve this to find D vector:

(i + 6j) - (3i - 7j) - 4D = 0

- 2i - j = 4D

D = - (2/4)i - (1/4)j

D = - (1/2)i - (1/4)j

<u>D = - 0.5i - 0.25j</u>

Therefore,

<u>Dx = -0.5</u>

<u>Dy = -0.25</u>

8 0
4 years ago
Frequency and pitch are (blank) proportional. Therefore, as frequency increases, the perceived pitch (blank) by the same factor.
Alborosie

Answer:

1. Directly

2. Increases

3. Frequency

4. Pitch

8 0
3 years ago
Read 2 more answers
If the moon was closer to earth how long would it take to orbit the earth? It is only right before the Roche limit, it’s theoret
Alex_Xolod [135]

Answer:

it would probably be the same but if the moon is closer gravity would infect us humans

Explanation:

6 0
3 years ago
A delivery truck leaves a warehouse and travels 2.60 km north. The truck makes a right turn and travels 1.33 km east before maki
charle [14.2K]

Answer:

AD\approx1.7582\ km

Explanation:

Follow the schematic in which point A is the warehouse and point D is the destination.

Now we observe the triangle constructed \Delta ADB:

here:

AB\perp BD

AB=2.6-1.45

AB=1.15\ km

&

BD=1.33\ km

As we know that displacement is the shortest distance between two points.

<u>Using Pythagoras theorem:</u>

AD=\sqrt{AB^2+BD^2}

AD=\sqrt{(1.15)^2+(1.33)^2}

AD\approx1.7582\ km

3 0
3 years ago
What will happen when a light bulb is removed from the circuit below, leaving a gap?
Charra [1.4K]

Answer:

The remaining light bulbs will go out.

Explanation:

The light bulb that was taken out routed power to the other light bulbs, there for, not giving power to the next light bulbs will make them turn off or, "go out". This may be incorrect, as you did not provide a picture of the circuit.

7 0
3 years ago
Read 2 more answers
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