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3 years ago

Which is not a type of driving distraction

Physics

1 answer:

Yuliya22 [10]3 years ago

7 0

No grooming your snail while driving. Just ask Spongebob. Oh by the way, what are the options?

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Determine the velocity (in m/s) of the object at 10seconds. Include a numerical answer accurate to the first decimal place. If n

tatuchka [14]

Answer:

v = 0.5 [m/s]

Explanation:

In order to determine the speed in such a time interval, we must calculate the slope between the last two positions.

The slope of a line is determined by the following mathematical expression.

P₂ = point 2 = (12,12) = (x₂,y₂)

P₁ = Point 1 = (6,9) = (x₁,y₁)

In this specific case, we must see that in the x-axis we have time, and on the y-axis, we have the space axis.

Now using the slope:

$m =\frac{y_{2} -y_{1} }{x_{2} -x_{1} } \\m = \frac{12-9}{12-6}\\m = 0.5$

This slope is equal to the speed (velocity)

v = 0.5 [m/s]

8 0

3 years ago

Calculate the focal length of the mirror formed by the convex side of a shiny spoon that has a 1.54 cm radius of curvature. (b)

blondinia [14]

Explanation:

It is given that,

Radius of curvature of the mirror, R = 1.54 cm

(a) We have to find the focal length of the mirror. The relationship between the focal length and the radius of curvature is given by :

$R=2f$

f = focal length of the mirror

$f=\dfrac{1.54\ cm}{2}$

f = 0.77 cm

(b) The power of mirror is given by the reciprocal of focal length i.e.

Power, $P=\dfrac{1}{f}$

P = 1.29 diopters

Hence, this is the required solution.

6 0

4 years ago

How many turns should a 10-cm long solenoid have if it is to generate a 1.5 x 10-3 t magnetic field on 1.0 a of current?

stepan [7]

We can answer this problem using Ampere’s Law:

Bh = μoNI

Where:

B = Magnetic Field

h = coil length

μo = permeability =4π*10^-7 T·m/A

N = number of turns

I = current

It is given that B=0.0015T, I=1.0A, h=10 cm = 0.1m

Use Ampere's law to find # turns:
Which can be rewritten as:
N = Bh/μoI 
N = (0.0015)(0.1)/(4π*10^-7)(1.0)
N = 119.4

Answer: 119.4 turns

3 0

4 years ago

Given this graph plotting velocity versus time, estimate the acceleration of object A at points X and Y respectively.

swat32

Point X lies on a horizontal line. We can intuitively say that the slope of the graph at point X is 0, therefore the acceleration at point X is 0m/s²

Point Y lies on a downward slanting line. To calculate the slope of that line, let's apply this equation:

m = (y₂-y₁)/(x₂-x₁)

m = slope, (x₁, y₁) and (x₂, y₂) correspond to the coordinates of the line's endpoints.

Given values:

(x₁, y₁) = (7, 5)

(x₂, y₂) = (12, 0)

Plug in and solve for m:

m = (0 - 5)/(12 - 7)

m = -1

The acceleration at point Y is -1m/s²

Choice A

5 0