3 years ago

If the toy car moved with a velocity of 2m/s to the south for 8s; what is the total displacement of the toy car?

Physics

1 answer:

ElenaW [278]3 years ago

3 0

Try calculating maybe that would help you

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The angular velocity of a flywheel obeys the equa tion w(1) A Br2, where t is in seconds and A and B are con stants having numer

makkiz [27]

Answer:

$A \to rad/s$

$B \to rad/s^3$

Explanation:

$\omega_z(t)=A + Bt^2$

Required

The units of A and B

From the question, we understand that:

$\omega_z(t) \to rad/s$

This implies that each of $A$ and $Bt^2$ will have the same unit as $\omega_z(t)$

So, we have:

$A \to rad/s$

$Bt^2 \to rad/s$

The unit of t is (s); So, the expression becomes

$B * s^2 \to rad/s$

Divide both sides by $s^2$

$B \to \frac{rad/s}{s^2}$

$B \to rad/s^3$

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3 years ago

What does the slope of a distance-time graph indicate?

lawyer [7]

Answer: It indicates the speed of a object. The steeper the line the greater the speed of the object.

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Why are special techniques and extinguishing agents are required to fight combustible metals fires?

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An important aspect of fission reactions is that they produce _______________ which allow for chain reactions.

Alex777 [14]

An important aspect of fission reactions is that they produce free neutrons, which causes chain reactions.

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A 17-mm-wide diffraction grating has rulings of 530 lines per millimeter. White light is incident normally on the grating. What

Sedbober [7]

Answer:

377 nm

Explanation:

Number of lines per meter is, $N &=530 \times 1000 \\ &=530000 \text { lines } / \mathrm{m} \end{aligned}$

Grating element is, $d=\frac{1}{N}$

$=1.8868 \times 10^{-6} \mathrm{~m}[tex]
Order is, n=5
Condition for maximum intensity is, [tex]d \sin \theta=n \lambda$

$\lambda &=\frac{1.8868 \times 10^{-6}}{5(\sin 90)} \\
&=0.377 \times 10^{-6} \mathrm{~m} \\
&=377 \mathrm{~nm}$

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3 years ago