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2 years ago

Einstein's most famous equation is E = mc². In this equation, E stands for energy, m stands

Physics

1 answer:

vovangra [49]2 years ago

5 0

Answer:

m = E/c^2

Explanation:

If we solve for m, we want to get m by itself. The way to do this is divide both sides by c^2.

E/c^2 = m*c^2 / c^2

c^2 cancels out on the right side, and we are left with the following:

E/c^2 = m

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What are the potential obstacles preventing you from completing your exercises as scheduled? How can you overcome those obstacle

shusha [124]

Answer:

Sleep, behavior patterns, mental state, and job

Explanation:

3 0

3 years ago

If you ride your bike at an average speed of 2 km/h and need to travel a total distance of 20 km, how long will it take you to r

love history [14]

Answer:

Time taken to reach your destination will be 10hours

Explanation:

Recall the formula for Speed;

speed=Total distance/Total time taken

Speed=2km/h

Total distance=20km

Time taken=x

let x be the unknown time taken

Input each values into the formula;

2=20/x

Making x subject of the equation

x=20/2

x=10

Total time taken =10hours.

3 0

3 years ago

Read 2 more answers

A horizontal circular platform (m = 119.1 kg, r = 3.23m) rotates about a frictionless vertical axle. A student (m = 54.3kg) walk

Murrr4er [49]

Answer:

$\omega_2=5.1rad/s$

Explanation:

Since there is no friction angular momentum is conserved. The formula for angular momentum thet will be useful in this case is $L=I\omega$ . If we call 1 the situation when the student is at the rim and 2 the situation when the student is at $r_2=1.39m$ from the center, then we have:

$L_1=L_2$

Or:

$I_1\omega_1=I_2\omega_2$

And we want to calculate:

$\omega_2=\frac{I_1\omega_1}{I_2}$

The total moment of inertia will be the sum of the moment of intertia of the disk of mass $m_D=119.1 kg$ and radius $r_D=3.23m$ , which is $I_D=\frac{m_Dr_D^2}{2}$ , and the moment of intertia of the student of mass $m_S=54.3kg$ at position $r$ (which will be $r_1=r=3.23m$ or $r_2=1.39m$ ) will be $I_{S}=m_Sr_S^2$ , so we will have: