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Katen [24]
3 years ago
12

The y-axis of a position-time graph represents__________.

Physics
1 answer:
Sladkaya [172]3 years ago
5 0

Answer:position relative to the starting point

Explanation:

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What is the linear speed of a point on the equator, due to the earth's rotation?
kvv77 [185]
The equatorial radius of the earth is
r = 6378 km = 6378 x 10³ m

The earth makes 1 revolution in 24 hours.
The angular velocity is
ω = (2π rad)/(24*3600 s) = 7.2722 x 10⁻⁵ rad/s

The tangential velocity (linear velocity) at a point on the equator is
v = rω
   = (6378 x 10³ m)*(7.2722 x 10⁻⁵ rad/s)
   = 463.8 m/s

Answer: 463.8 m/s

8 0
4 years ago
Please someone derive 3rd equation of motion u- v= 2sa​
zlopas [31]

We know

\\ \sf\longmapsto a=\dfrac{dv}{dt}

\\ \sf\longmapsto a=\dfrac{dv}{dx}.\dfrac{dx}{dt}

\\ \sf\longmapsto a=v\dfrac{dv}{dx}

\\ \sf\longmapsto adx=vdv

  • Integrate

\\ \sf\longmapsto a{\displaystyle{\int}^x_{x_0}}dx=\displaystyle{\int}_u^v vdv

\\ \sf\longmapsto a(x-x_0)=\dfrac{v^2-u^2}{2}

Here

  • x-x_0=s

\\ \sf\longmapsto v^2-u^2=2as

6 0
3 years ago
Read 2 more answers
A package of mass 5 kg sits on an airless asteroid of mass 7.6 × 1020 kg and radius 8.0 × 105 m. We want to launch the package i
Effectus [21]

Answer:

s =  1.7 m

Explanation:

from the question we are given the following:

Mass of package (m) = 5 kg

mass of the asteriod (M) = 7.6 x 10^{20} kg

radius = 8 x 10^5 m

velocity of package (v) = 170 m/s

spring constant (k) = 2.8 N/m

compression (s) = ?

Assuming that no non conservative force is acting on the system here, the initial and final energies of the system will be the same. Therefore  

• Ei = Ef

• Ei = energy in the spring + gravitational potential energy of the system

• Ei = \frac{1}{2}ks^{2} + \frac{GMm}{r}

• Ef = kinetic energy of the object

• Ef = \frac{1}{2}mv^{2}  

• \frac{1}{2}ks^{2} + (-\frac{GMm}{r}) = \frac{1}{2}mv^{2}  

• s = \sqrt{\frac{m}[k}(v^{2}+\frac{2GM}{r})}

s = \sqrt{\frac{5}[2.8 x 10^5}(170^{2}+\frac{2 x 6.67 x10^{-11} x 7.6 x 10^{20}}{8 x 10^5})}

s =  1.7 m

7 0
3 years ago
What Does This Poem Mean?
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7 0
3 years ago
4. Protons and neutrons are held together to form this _________
Olenka [21]

Answer:

strong nuclear force.

Explanation:

hope this helps you!!

8 0
2 years ago
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