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andriy [413]
3 years ago
7

How might you use a rope and pulley to move a wagon up a ramp?

Physics
1 answer:
sleet_krkn [62]3 years ago
7 0
You could attach the pulley to a secure object on the top of the ramp, and crank the pulley to bring the wagon up said ramp into a loading bay perhaps, or a track. 

Hope I helped. 
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Question 9
Zepler [3.9K]

Answer

Can the wave travel between the Sun and Earth.

Explanation:

This would be due to the fact that mechanical waves alone require a medium to travel. Electromagnetic waves that are produced on the sun subsequently travel to Earth through the vacuum of outer space. ... Mechanical waves require a medium in order to transport their energy from one location to another.

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In the circuit shown below, the battery voltage is 20 volts. What will be the reading of the ammeter shown in the circuit? Two-r
SOVA2 [1]

Answer: 0.40 amperes

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3 years ago
Which imaging technique uses radiation that is emitted from the material being imaged?
yaroslaw [1]

Answer:

MRI

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3 years ago
iv. An object is 14 cm in front of a convex mirror. The image is 5.8 cm behind the mirror. What is the focal length of the mirro
Dvinal [7]

Answer:

C. 9.9 cm

Explanation:

The location of the object, u = 14 cm

The location of the image, v = 5.8 cm

The focal length of the mirror, f = Required

The mirror formula for a convex mirror is given as follows;

\dfrac{1}{u} -\dfrac{1}{v} = -\dfrac{1}{f}

Therefore, we get;

\dfrac{1}{14 \ cm} -\dfrac{1}{5.8 \ cm} =- \dfrac{41}{406 \ cm} = -\dfrac{1}{f}

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f = \dfrac{406 \ cm}{41}  \approx 9.9 \ cm

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6 0
3 years ago
A roofer drops a nail that hits the ground traveling at 26 m/s. How fast was the nail traveling 1 second before it hits the grou
RoseWind [281]

vf = vi + at 

vf – vi = at<span>

<span>vi= 0, vf=26  and afor nil = 9.8m/s2</span></span>

26 = 9.8t

t =<span> 26 / 9.8 = 2.65 s
Now we know the total time, so we can calculate the time 1 second before it hit the ground. 

<span>= 2.65 -1 = 1.65s

<span>Now again using the same equation, vf = vi+at, we can find vf
vi = 0, a = 9.8 t=1.65</span></span></span>

vf = 0 + 9.8(1.65) = 16.17 m/s<span>
</span><span>So, the nail is traveling with the speed of 16.17m/s 1 second before it hits the ground.</span>

6 0
3 years ago
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