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3 years ago

Please help on this one

Physics

2 answers:

fredd [130]3 years ago

8 0

Earth revolves around the sun

lorasvet [3.4K]3 years ago

3 0

Earth revolves around the sun, (and rotates on its axis).

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A truck drives with a constant linear speed v_iv i v, start subscript, i, end subscript down a road with two curves. The first

Alex

Answer:

Explanation:

Centripetal acceleration is given by

$a = \dfrac{v^2}{r}$

where <em>v</em> is the linear velocity and <em>r</em> is the radius of the curve.

Let the centripetal acceleration on the curve of radius <em>R</em> be $a_1$ .

Then

$a_1 = \dfrac{v_i^2}{R}$

Let the centripetal acceleration on the curve of radius 3<em>R</em> be $a_2$ .

Then

$a_2 = \dfrac{v_i^2}{3R} = \dfrac{1}{3}\dfrac{v_i^2}{R} = \dfrac{1}{3}a_1$

Here, we see that the acceleration decreases by a factor of 3.

7 0

3 years ago

How would you know if a force is acting on an object?

Artemon [7]

Answer:

microscope

Explanation:

6 0

2 years ago

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The amount of oxygen in the reactants is 4 atoms. In the products, the oxygen is distributed to water (H2O) and O2 gas. Which co

svp [43]

Answer:

2 in front of water and 1 in front of oxygen

Explanation:

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3 years ago

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An especially violent lightning bolt has an average current of 1.89 x 103 A lasting 0.133 s. How much charge is delivered to the

Rasek [7]

<h2> Charge = 25.9 $Ampsec^{-1}$ </h2>

Explanation:

Given,

The average current (I) = ${1.89} \times {103 A}$ and

Time period (T) = 0.133 s

The charge is calculated by multiplying the current to the time period.

Hence,

To find, the charge delivered to the ground by the lightning bolt(Q) = ?

By applying the formula of charge that is-

Charge(Q) = $Current(I) \times Time(T)$

∴ Charge(Q) = ${1.89} \times {103 A}$ $\times 0.133 s$

= 25.89111 $As^{-1}$

= 25.9 $As^{-}$

<h3>Thus, the charge of 25.9 $Ampsec^{-1}$ is delivered to the ground by the lightning bolt.</h3>

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4 years ago

What is the relationship between the speed of an object and its kinetic energy?

VladimirAG [237]

Answer:

For the purposes of your question, we can think of speed and velocity as being the same thing. Therefore, the kinetic energy of an object is proportional to the square of its velocity (speed). In other words, If there is a twofold increase in speed, the kinetic energy will increase by a factor of four.

Explanation:

5 0

3 years ago

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