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3 years ago

4. Where would a tsunami be most likely to occur?

Physics

1 answer:

belka [17]3 years ago

4 0

Answer:

D. Indonesia

Explanation:

Indonesia's high frequency of tsunamis, due to its location along the Pacific Ring if Fire

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A car of mass 1200Kilograms moving at 15 m/s the driver applies the brakes for 0.08 seconds and the castles down to 10 meter per

denpristay [2]

Initial velocity=u=15m/s
Final velocity=v=10m/s
Time=0.08s

$\\ \sf\longmapsto Acceleration=\dfrac{v-u}{t}$

$\\ \sf\longmapsto Acceleration=\dfrac{10-15}{0.08}$

$\\ \sf\longmapsto Acceleration=\dfrac{-5}{0.08}$

$\\ \sf\longmapsto Acceleration=-62.5m/s^2$

5 0

3 years ago

The brakes of an automobile can decelerate it at -4.7m/s^2. If the automobile is traveling at the rate of 31.0m/s How far will i

OleMash [197]

Answer:

204.5 m

Explanation:

a = v \ t

t = v \ a

t = 31 \ 4.7 = 6.6s

v = d \ t

d = v * t

d = 31 * 6.6

d= 204.5 meters

6 0

3 years ago

In an RC circuit, how many time constants must elapse if an initially uncharged capacitor is to

xenn [34]

The capacitor reaches 70% of its final potential difference after 1.21 time constants

Explanation:

In an RC circuit, when an initially uncharged capacitor is connected to a battery, charge starts to flow through the circuit and accumulates on the capacitor.

As a result, the potential difference across the capacitor also increases, until the capacitor becomes fully charged.

The potential difference across the capacitor follows the equation:

$V(t)=V_0(1-e^{-\frac{t}{\tau}})$

where

$V_0$ is the final potential difference on the capacitor, which is equal to the potential difference of the battery

$\tau$ is the time constant of the circuit

In this problem, we are asked after what time the capacitor reaches 70% of its final potential difference, therefore the time t at which

$V(t)=0.70V_0$

Substituting into the equation and solving for t, we find:

$0.70V_0 = V_0(1-e^{-\frac{t}{\tau}})\\0.70=1-e^{-\frac{t}{\tau}}\\e^{-\frac{t}{\tau}}=0.30\\\frac{t}{\tau}=-ln(0.30)=1.21\\t=1.21\tau$

Therefore, the capacitor reaches 70% of its final potential difference after 1.21 time constants.

Learn more about capacitors:

brainly.com/question/10427437

brainly.com/question/8892837

brainly.com/question/9617400

#LearnwithBrainly

4 0

3 years ago

A night-light uses 3 W. If the voltage is 120 V, what is the current?

34kurt

Answer:

0,025

Explanation:

$p = i \times v \\ 3 = i \times 120 \\ i = \frac{3}{120} \\ i = 0.025$

4 0

3 years ago

Accurate radiometric dating typically requires that a rock contains a measurable amount of __________.

gizmo_the_mogwai [7]

Answer:

Both daughter and parent atoms

Explanation:

Daughter atoms are an offshoot of daughter elements, and are formed when a radioactive element undergoes radioactive decay. The new element is the daughter element, while the initial, the former element is the parent element.

Same analogy goes for daughter atoms and parent atoms..

Radiometric dating is also called radioactive dating or even radioisotope dating. It is a technique that is used to date materials like carbon or even rocks, that has trace radioactive impurities selectively incorporated into it when they were formed.

4 0

3 years ago