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kap26 [50]
4 years ago
11

Which of the following statements is correct?

Physics
1 answer:
Dafna11 [192]4 years ago
6 0
These are the correct solutions:

It is 11 a.m. in the Eastern Time Zone; therefore, it is 8 a.m. in the Pacific Time Zone. (3 hrs behind)

It is 3 p.m. in the Central Time Zone; therefore, 2 p.m. in the Mountain Time Zone. (1 hr behind)

It is 6 p.m. in the Pacific Time Zone; therefore, it is 4 p.m in Hawaii. (2 or 3 hours behind depending on time of year)

It is 6 p.m. in Hawaii; therefore, it is 11 p.m. in the Eastern Time Zone (5 or 6 hours behind depending on time of year).

It is 3 p.m. in Hawaii; therefore, it is 6 p.m. in the Mountain Time Zone (3 or 4 hours behind depending on time of year).
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What is the closest star that could go supernova?
sweet [91]
The nearest star that can go supernova is either Spica or IK Pegasi
6 0
3 years ago
Two boats leave a dock together . Each travels in a straight line . The angle between their courses measures 54° 10¢ . One boat
nata0808 [166]

Answer:

218.93 km

Explanation:

\theta = Angle between the paths of the two boats = 54.10°

Distance = Speed × Time

Distance traveled by one boat = 36.2\times 3\ km

Distance traveled by other boat = 45.6\times 3\ km

From the triangle law of vectors we have

d=\sqrt{(36.2\times 3)^2+(45.6\times 3)^2+2\times 36.2\times 3\times 45.6\times 3\times cos54.10}\\\Rightarrow d=218.93\ km

The distance they will be apart after 3 hours is 218.93 km

3 0
4 years ago
How many components can be realized of a vector?​
stiv31 [10]

Answer:

<em>two different components</em>

Explanation:

<em>Any two-dimensional vector can be conceived of as having two distinct components. The component of a single vector describes the vector's effect in a specific direction.</em>

3 0
2 years ago
A particle oscillates harmonically x = A cos(ωt + φ0), with amplitude 9 m, angular frequency π s −1, and initial phase π 3 radia
Gekata [30.6K]

Answer:

t = \frac{5}{12} s

Explanation:

As we know that the equation of particle position is given as

x = A cos(\omega t + \phi_0)

Now the speed of the particle is given as

v = A\omega sin(\omega t + \phi_0)

now we know that potential energy and kinetic energy is equal

so we have

\frac{1}{2} mv^2 = \frac{1}{2}kx^2

so we will have

A^2\omega^2 sin^2(\omega t + \phi_0) = A^2\omega^2 cos^2(\omega t + \phi_0)

tan^2(\omega t + \phi_0) = 1

\omega t + \phi_0 = \frac{\pi}{4} or \frac{3\pi}{4}

\pi t = \frac{3\pi}{4} - \frac{\pi}{3}

\pi t = \frac{5\pi}{12}

t = \frac{5}{12} s

6 0
3 years ago
Matter can exist in hw many states​
Mariulka [41]

Answer:

Matter can exist in four different states: solids, liquids, gases and plasma.

Explanation:

Hope this helps :)

4 0
3 years ago
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