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Dima020 [189]
3 years ago
13

A car traveled north 25 km for 1 hour. The car’s SPEED is 25 km/hr north.

Physics
1 answer:
kramer3 years ago
6 0

Answer:

hgk

Explanation:

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Which term describes the relationship between wax and wane
andreyandreev [35.5K]
Those two words are antonyms ... two words with opposite meanings.
"Wax" means "grow".
"Wane" means "shrink".
3 0
4 years ago
If a current of 2. 4 a is flowing in a wire of diameter 2. 0 mm, what is the average current density?
HACTEHA [7]

The average current density is 7.6 × 10⁵ A/m².

To calculate the current density current will be 2.4 A.

Diameter of a wire = 2mm.

The cross-sectional area of the wire is given by r = d/2

where r is the radius of the wire.  

Then, the cross-sectional area is = 0.00000314159265

                                                                   = 3.1 × 10⁻⁶ m².

<h3>What is average current density?</h3>

         Consider a current carrying conductor, the current density depends upon  the current flow in the conductor. If the current flow in the conductor will be high then the current density will also be high. Using the average current flowing through the conductor, the average current density will be found.

Average current density j = I / A Ampere/ meter².

By substituting the values in the formula,

             j = 2.4 / ( 3.1 × 10⁻⁶)

               = 7.6 × 10⁵ A/m².

Hence, the current density can be calculated.

Learn more about average current density,

brainly.com/question/3981451

#SPJ4

5 0
2 years ago
To test the performance of its tires, a car travels along a perfectly flat (no banking) circular track of radius 130 m. The car
marysya [2.9K]

Answer:

0.739

Explanation:

If we treat the four tire as single body then

W ( weight of the tyre ) =  mass × acceleration due to gravity (g)

the body has a tangential acceleration = dv/dt = 5.22 m/s², also the body has centripetal acceleration to the center = v² / r

where v is speed 25.6 m/s and r is the radius of the circle

centripetal acceleration = (25.6 m/s)² / 130 = 5.041 m/s²

net acceleration of the body = √ (tangential acceleration² + centripetal acceleration²) = √ (5.22² + 5.041²) = 7.2567 m/s²

coefficient of static friction between the tires and the road = frictional force / force of normal

frictional force = m × net acceleration / m×g

where force of normal = weight of the body in opposite direction

coefficient of static friction = (7.2567 × m) / (9.81 × m)

coefficient of static friction = 0.739

4 0
3 years ago
Examine the reactants of the incomplete double displacement reaction.
Bumek [7]
<h3>Answer:</h3>

AgCl + NaNO₃

<h3>Explanation:</h3>
  • The reaction between silver nitrate and sodium chloride is an example of a double displacement reaction.
  • In a double displacement reaction compounds or salts reacts and exchange cations or anions to form new compounds or salts.
  • In this case, silver nitrate and sodium chloride exchange anions and cations to form silver chloride and sodium nitrate.
  • Therefore, the complete reaction is given by;

AgNO3 + NaCl → AgCl + NaNO₃

  • But since silver chloride is a precipitate, the reaction may also be an example of a precipitation reaction.
8 0
3 years ago
What happens that a light ray if it incident on a reflective surface along the normal
evablogger [386]
Most likely it will reflect off the surface and create a fire
6 0
3 years ago
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