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3 years ago

LIULIS. What would happen to speed if distance increased in the same amount of time?

Physics

1 answer:

Diano4ka-milaya [45]3 years ago

6 0

Answer:

The speed will be increased.

Explanation:

We can better understand this analysis, if we use numerical values and remember the expression or formula for speed. We know that speed is defined as the distance travelled at a given time.

$v=\frac{x}{t} \\where:\\v = velocity [m/s]\\x = distance [m]\\t = time [s]\\$

So if we have the distance x = 4 [m] and the time 2 [s], the speed will be:

v = (4/2) = 2 [m/s]

And if we increase the distance to x = 10 [m] at the same time 2[s], the speed will be:

v = (10/2) = 5 [m/s]

So we can see that the speed is increased.

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Which statement correctly describes the reactivity of noble gases, according to the octet rule? Their atoms have eight electrons

Kipish [7]

Answer:

The correct option is : Their atoms have eight electrons in their valence shells, so noble gases are very unreactive.

Explanation:

The octet rule state that atoms tend to complete their last energy levels with eight electrons, and that this configuration make them very stable and unreactive.

Noble gases are characterized as unreactive atoms, and this is associated with the fact that they have a complete valence shell, it means that they have eight electrons on it (they follow the octet rule).

Atoms with less electrons on their valence shells tend to react with another atom, forming bonds, to complete their valence shells (with eight electrons).

5 0

3 years ago

A cube has sides that are each equal to 7 centimeters in length. What is the volume of the cube?

RUDIKE [14]

Answer:

Explanation:

7³ = 343

4 0

3 years ago

Read 2 more answers

A ball is spun around in circular motion such that its frequency is 10 Hz.

Scilla [17]

Answer:

a = 0.1 s b. 10 s

Explanation:

Given that,

The frequency in circular motion, f = 10 Hz

(a) Let T is the period of itsrotation. We know that,

T = 1/f

So,

T = 1/10

= 0.1 s

(b) Frequency is number of rotations per unit time. So,

$t=\dfrac{n}{f}\\\\t=\dfrac{100}{10}\\\\t=10\ s$

Hence, this is the required solution.

5 0

2 years ago

Pliss help...

natita [175]

Answer:

I think it is A

Explanation:

Below, what belongs to the organs of the circulatory system in humans is...

<em>a. heart - kidneys - lungs</em>

b. heart-blood vessels - blood

c. heart - kidney - liver

d. heart - lungs

7 0

2 years ago

A very long straight wire has charge per unit length 1.56×10−10 C/m .

77julia77 [94]

Answer:

The magnitude of the electric field equal to 2.40 N/C at 1.1537m from the wire.

Explanation:

using Guass law,

(guessing that a cylinder of radius r and length L around wire such that wire is at centre )

E. A = qin / e0

E ( 2πr L ) = (1.56 x $10^{-10}$ x L) / (8.85 x $10^{-12}$ )

E = (1.56 x $10^{-10}$ ) / (2πr x 8.85 x $10^{-12}$ )

so 2.40 = (1.54 x $10^{-10}$ ) / (2πr x 8.85 x $10^{-12}$ )

2.40 (6.284r) = 0.174 x 10²

15.0816r = 17.4

r = 1.1537m

6 0

2 years ago