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2 years ago

Scientists believe Earth is about how many billion years old

Physics

2 answers:

ehidna [41]2 years ago

7 0

The earth is 4.54 billion years old.

ivolga24 [154]2 years ago

5 0

Scientists believe the earth is about 4 billion years old. But it's not true. It is really only 6,000 years old.

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Objects of equal mass are oscillating up and down in simple harmonic motion on two different vertical springs. The spring consta

olga55 [171]

Answer:1080 N/m

Explanation:

Given

Spring constant of first Spring $K_1=245 N/m$

mass of both the system is same

Both system have same maximum velocity

if $x=A\sin \omega t$ is general equation of SHM

then maximum velocity is given by

$v_{max}=A\omega$

$\omega =\sqrt{\frac{k}{m}}$

$v_1_{max}=A_1\omega _1$

$\omega _1=\sqrt{\frac{k_1}{m}}$

similarly $\omega _2=\sqrt{\frac{k_2}{m}}$

also $A_1=2A_2$

so $A_1\times \sqrt{\frac{k_1}{m}}=A_2\times \sqrt{\frac{k_2}{m}}$

$2\times \sqrt{k_1}=\sqrt{k_2}$

$k_2=4k_1$

$k_2=4\times 245=1080 N/m$

5 0

3 years ago

Que capacidade física consiste em deslocar o corpo no espaço o mais rápido possível, mudando o centro de gravidade de posição, s

grin007 [14]

Answer:ur mom

Explanation:because

6 0

2 years ago

How do I make a Bohr model of the boron atom?

4vir4ik [10]

This should help

there always needs to be the two electrons first if possible the 8 electrons for each shell till the number of electron runout

3 0

2 years ago

A horse running at 3 m/s speeds up with a constant acceleration of 5 m/s2. How fast is the

Elan Coil [88]

Answer:

The horse is going at 12.72 m/s speed.

Explanation:

The initial speed of the horse (u) = 3 m/s

The acceleration of the horse (a)= 5 m/ $s^{2}$

The displacement( it is assumed it is moving in a straight line)(s)= 15.3 m

Applying the second equation of motion to find out the time,

$s=ut+\frac{1}{2}at^{2}$

$15.3=3t+2.5t^{2}$

$2.5t^{2}+3t-15.3=0$

Solving this quadratic equation, we get time(t)=1.945 s, the other negative time is neglected.

Now applying first equation of motion, to find out the final velocity,

$v=u+at$

$v=3+1.945*5$

$v=3+9.72$

v=12.72 m/s

The horse travels at a speed of 12.72 m/s after covering the given distance.

7 0

3 years ago

All waves have wavelength, frequency, rest point, and speed. <br> True or False?

nexus9112 [7]

Answer:

it is true

Explanation:

4 0

2 years ago

Read 2 more answers