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3 years ago

6

TRUE OR FALSE

2 answers:

stiks02 [169]3 years ago

3 0

Answer:

I best answer is true sorry if it's wrong

kari74 [83]3 years ago

3 0

Answer:

True

Explanation:

Induced current /voltage is proportional to the rate of change over time of the magnetic field. so a change in the direction of the current will also change the direction of the magnetic field

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Which of the following is an example of a dry lubricant? oil grease graphite petroleum

Naddika [18.5K]

Answer:

Dry lubricants or solid lubricants are materials that, despite being in the solid phase, are able to reduce friction between two surfaces sliding against each other without the need for a liquid oil medium.

Explanation:

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3 years ago

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A -kilogram car travels at a constant speed of 20. meters per second around a horizontal circular track. The diameter of the tra

Tatiana [17]

Answer:

The centripetal acceleration of the car is $8\ m/s^2$ .

Explanation:

Let the mass of the car, $m=10^3\ kg$

Diameter of the circular path, d = 100 m

Speed of car, v = 20 m/s

Radius, r = 50 m

When an object moves in a circular path, the centripetal acceleration acts on it. It is given by :

$a=\dfrac{v^2}{r}$

$a=\dfrac{(20\ m/s)^2}{50\ m}$

$a=8\ m/s^2$

So, the centripetal acceleration of the car is $8\ m/s^2$ . Hence, this is the required solution.

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4 years ago

If you used 16 gallons when driving 367 miles, what was your gas mileage over that distance

White raven [17]

Your gas mileage would be 22.93 miles per gallon.

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3 years ago

________________ can carry thermal energy from object to object, even through empty space.

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Radiation can carry thermal energy.

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4 years ago

A cylinder rotating about its axis with a constant angular acceleration of 1.6 rad/s 2 starts from rest at t = 0. At the instant

umka21 [38]

Answer:

a = 0.27 rad/s^2

Explanation:

First we will find the time t using the next equation:

θ = $\frac{1}{2}at^2$

where θ is the angle in radians and a is the angular aceleration. So:

0.4 = $\frac{1}{2}(1.6)t^2$

Solving for t:

t = 0.707s

Second, with that time, we will find the angular velocity w using the next equation:

w = at

where a is the angular aceleration, so:

w = (1.6)(0.707s)

w = 1.1312 rad/s

Now, the radial aceleration $a_r$ is calcualted as:

$a_r$ = $w^2r$

$a_r$ = $(1.1312)^2(0.13)$

$a_r$ = 0.166 rad/s^2

Additionally, the tangential aceleration $a_t$ is calculated as::

$a_t = ar$

$a_t = (1.6)(0.13)$

$a_t = 0.208 rad/s^2$

Finally, by pythagoras theorem, we find the total linear acceleration as:

$a = \sqrt{a_r^{2}+a_t^2 }$

$a = \sqrt{(0.208)^2+(0.166)^2 }$

a = 0.27 rad/s^2

4 0

3 years ago