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poizon [28]
3 years ago
11

What is the correct definition of speed.

Physics
2 answers:
Effectus [21]3 years ago
7 0

Explanation:

<em>S</em><em>p</em><em>e</em><em>e</em><em>d</em><em> </em><em>is </em><em> </em><em>defi</em><em>ned</em><em> </em><em>as </em><em>distance</em><em> </em><em>per</em><em> </em><em>tim</em><em>e</em><em> (</em><em>mil</em><em>es</em><em> </em><em>per</em><em> </em><em>hou</em><em>r</em><em> </em><em>or</em><em> </em><em>meter</em><em> </em><em>per</em><em> </em><em>se</em><em>cond</em><em>)</em>

Sholpan [36]3 years ago
4 0

Answer:

Option (C) is correct.

Explanation:

Speed of an object is defined as the distance covered per unit time. Speed is a scalar quantity It is composed only of the magnitude but the direction is absent. Mathematically, it is given by :

v=\dfrac{d}{t}

d = distance

t = time

So, the correct option is (c) " distance per time ". Its unit can be miles per hour or meter per second.

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You drive in a straight line at 24.0 m/s for 10.0 miles, then at 30.0 m/s for another 10.0 miles. Part A Is your average speed 2
aliina [53]

Answer:

less than 27 m/s

Explanation:

The average speed would be total distance (10 + 10 = 20 miles = 32000 m) over total time

The time it takes you to drive the first 10 miles (16000 m) at 24m/s is

16000 / 24 = 666.67 s

The time it takes you to drive the 2nd 10 miles (16000 m) at 30 m/s is

16000 / 30 = 533.33 s

The average speed is

v = \frac{16000 + 16000}{666.67 + 533.33} = \frac{32000}{1200} = 26.67 m/s < 27 m/s

So your average speed is less than 27 m/s

6 0
3 years ago
A cell membrane consists of an inner and outer wall separated by a distance of approximately 10nm. Assume that the walls act lik
mojhsa [17]

Answer:

The magnitude of the electric field between the membranes is  1.13 x 10⁶ N/C

Explanation:

Given;

the distance of separation of the parallel plate capacitor, d =  10nm

the charge density, σ = 10⁻⁵C/m²

the magnitude of the electric field between the membranes, is calculated using the formula below;

E = σ / ε₀

Where;

ε₀ is permittivity of free space, = 8.85 x 10⁻¹² C²/Nm²

E is magnitude of the electric field between the membranes

σ is surface charge density

E = (10⁻⁵) / (8.85 x 10⁻¹²)

E = 1.13 x 10⁶ N/C

Therefore, the magnitude of the electric field between the membranes is  1.13 x 10⁶ N/C

6 0
3 years ago
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gregori [183]

Answer:

1. Torque → F. Study of forces

2. C.O.G → D. Point of action of weight.

3. Plumb line → A. Line of C.O.G

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3 years ago
During the water cycle, solar energy causes water to change from a _____ to a ______.
tankabanditka [31]
Liquid to a gas hence the name water vapor 
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3 years ago
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Gravity ____.
vitfil [10]

I am like 98% sure it is C

4 0
4 years ago
Read 2 more answers
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