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ollegr [7]
2 years ago
6

A car traveling at +7.0 m/s accelerates at a rate of +0.80 m/s^2 for an interval of 2.0 s. Find the final velocity.

Physics
1 answer:
gavmur [86]2 years ago
6 0
The given values are the following:

initial velocity = 7.0 m/s
<span>acceleration </span> = .80 m/s^2
t = 2.0 s

The final velocity is calculated by using the equation expressed as:

vf = vo + at
vf = 7.0 + .80(2)
vf = 8.6 m/s
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The angle of incidence of a light beam in air onto a reflecting surface is continuously variable. The reflected ray is found to
Mariana [72]

Answer:

  n = 2.0686

Explanation:

When an unpolarized ray of light is reflected on a surface, the reflected ray is partially polarized, complete polarization occurs when it is true that between the transmitted and reflected ray one has 90, the relationship is

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 let's calculate

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8 0
3 years ago
The frequency of the George Washington Bridge is 2.05 Hz. What is its period?
Zina [86]

Answer: 0.5 seconds

Explanation:

Given that:

Frequency of the George Washington Bridge F = 2.05 Hz

Period T = ?

Recall that frequency is the number of cycles a wave can complete in one second. Hence, frequency is the inverse of period.

i.e F = 1/T

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T = 1/2.05Hz

T = 0.488 seconds (Rounded to the nearest tenth as 0.5seconds)

Thus, the period of the George Washington Bridge is 0.5 seconds

6 0
2 years ago
A model train traveling at a constant speed around a circular track has a constant velocity
TiliK225 [7]
A model train traveling at a constant speed around a circular track has a constant velocity. FALSE.
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3 0
3 years ago
A grocery cart with a mass of 15 kg is pushed at constant speed along an aisle by a force fp = 12 n which acts at an angle of 17
Korolek [52]

<span>Given:

Mass of cart: 15kg</span>

Aisle length = 14m

Angle = 17° below the horizontal

Force fp = 12 N

 

So, the solution would be like this for this specific problem:

 

<span><span>1)    </span>W(by applied force) = F(applied) x s x cosθ <span>
=>W(a) = 12 x 14 x cos17* = 160.66 J </span></span>
<span><span>
2)    </span>By F(net) = F(applied) - F(friction) <span>
=>As v = constant => a = 0 => F(net) = 0 
=>F(applied) = F(friction) 
<span>=>W(friction) = -F(friction) x s
=>W(friction) = -F(applied) x s 
=>W(f) = -12 x 14 x cos17* = -160.56 J </span></span></span>
<span><span>
3)    </span>0, as the displacement is perpendicular to Force </span>
<span><span>
4)    </span>0, as the displacement is perpendicular to Force</span>  
<span>
To add, the force that is applied<span> to an object by a person or another object is called the applied force.</span></span>
8 0
3 years ago
I have a density of 1.61g/cm^3 and a mass of 28g. Find the missing value
Tamiku [17]

The missing value is the 'k' that should appear between '28' and 'g' .

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8 0
2 years ago
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