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Romashka [77]
3 years ago
6

. En 1/2 hora, un ciclista recorrió 20 kilómetros. ¿Cuál fue el promedio de velocidad del ciclista? a. 10 km / h b. 60 km c. 40

km d. 40 km / h
Por ayúdenme respóndanme rápido
Physics
1 answer:
ohaa [14]3 years ago
8 0
Distancia el lingo por la tarde

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A force does work on an object if a component of the force:a. is perpendicular to the displacement of the object b. is parallel
MAVERICK [17]

As we know that total work done by a force is given by

W = F.d

W = Fdcos\theta

so it is product of force and displacement along same direction

as we can write it as

W = (Fcos\theta)(d)

so it must be the product of force and displacement in same directions so correct answer must be

<u>b. is parallel to the displacement of the object</u>

8 0
3 years ago
A reading may appear to be different when viewed with one eye or the other, or when the head is moved from side to side or up an
kkurt [141]
<span>This apparent measurement difference is due to a change in position of the observer, and is called "Parallax"

In short, Your Answer would be Option C

Hope this helps!</span>
4 0
3 years ago
Read 2 more answers
In Hooke’s law, what does the x represent?
Mice21 [21]

Answer:   C

X = Displacement of the spring

Hooke's law: It states that the applied force F is proportional to the  displacement of spring .

            F ∝ x

            Where, x = displacement of spring in meters

                         F = force, measured in Newtons

In another words The force F is equal to the constant K times the disparagement.

            F = k.x

            Where k is constant and it depends on elastic material.

            Spring has restorative force.  

If the spring moves in opposite direction then,

           F = - k.x

A negative sign indicates that the spring resists and force is to the left. The compression of the spring is greater than the restoring force.  

   Example: A mass 'm' stretches a spring at a displacement x.    

6 0
3 years ago
When a potassium atom forms an ion, it loses one electron. What is the electrical charge of the potassium ion? *
Ganezh [65]
+1 An electron has a negative charge so losing a charge of -1 from an uncharged, or neutral, atom will leave an ion with a positive charge.
5 0
3 years ago
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A bowl contains 4 red balls and 2 green balls. Two balls are selected simultanesouly and at random. What is the conditional prob
AlladinOne [14]

Answer:0.6

Explanation:

Given

Bowl contains 4 red and 2 Green balls

Probability of selecting two red balls given atleast one of the ball is red + Probability of selecting two red balls given that no ball is red =1

Probability of selecting two red balls given that no ball is red =\frac{Probability \ of\ selecting\ two\ red\ balls\ out\ of\ 4\ balls}{probability\ of\ selecting\ 2\ balls\ out\ of\ 6 balls}

P=\frac{^{4}C_2}{^{6}C_2}

P=\frac{2}{5}

Required Probability=1-\frac{2}{5}=\frac{3}{5}

7 0
4 years ago
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