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NemiM [27]
3 years ago
5

(4) 10 m/s

Physics
1 answer:
siniylev [52]3 years ago
4 0

Answer:

13

Explanation:

6+4=10s

50+35=85

av speed=85/10=8.5m/s

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Yes, they are also known as white rainbows or lunar rainbows.
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Write a sentence to describe how an image is formed on retina<br>when looking at distant objects.​
beks73 [17]

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What will happen to the astronaut when the jets produce these four forces: 10N, 10N, 9N, 9N?
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Let me know if this helped you, please rank this was the brainlist answer if possible, thanks!
6 0
4 years ago
A ball is thrown upward at a velocity of 20m/s. What is the velocity after 3 seconds?
Anit [1.1K]

This is a perfect problem to use positive and negative velocities.

Let's call the positive direction the direction that points UP. 
Then the negative direction is the one that points down.

The acceleration of gravity on Earth is 9.8 m/s² down.  That means
that any object with no forces on it except gravity gains 9.8 m/s of
speed downward every second.

OK. Ready to go to work:

The ball's initial velocity is +(up)20.0 m/s .
Every second after the toss, the ball has -(down)9.8 m/s more velocity.

The ball's velocity after 3 seconds is

            +20 + 3(-9.8)  = 

              20  -  29.4  =    - 9.4 m/s .

That means it's velocity at that time is  9.4 m/s pointing down.

6 0
3 years ago
An electron is moving at 7.4x105 m/s perpendicular to a magnetic field. It experiences a force of 2.0x10–13 N. What is the magne
alisha [4.7K]

Answer:

1.69 T

Explanation:

Applying,

F = BvqsinФ.................. Equation 1

Where F = Force, B = magnetic field, v = velocity, q = charge on an electron, Ф = angle between the electron and the field.

make B the subject of the equation,

B = F/(vqsinФ)............. Equation 2

From the question,

Given: F = 2.0×10⁻¹³ N, v = 7.4×10⁵ m/s, Ф = 90°

Constant: q = 1.60×10⁻¹⁹ C

Substitute into equation 2

B =  2.0×10⁻¹³/(7.4×10⁵×1.60×10⁻¹⁹×sin90°)

B = 0.169×10

B = 1.69 T

4 0
3 years ago
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