2 years ago

What is the relative velocity between two cars moving in the opposite direction with velocity 20m/s

Physics

1 answer:

Scrat [10]2 years ago

3 0

V_A=V_B=20m/s

Both are moving opposite

$\\ \sf\ast\Rrightarrow R_{AB}=V_A-V_B$

$\\ \sf\ast\Rrightarrow R_{AB}=20-20$

$\\ \sf\ast\Rrightarrow R_{AB}=0m/s$

You might be interested in

During which segments are two states of matter present? the answer is D

Tomtit [17]

Answer:

2,4

Explanation:

LOL WHERE THE PICTURE GURL?

7 0

2 years ago

A small loop of area A = 5.5 mm2 is inside a long solenoid that has n = 919 turns/cm and carries a sinusoidally varying current

Tema [17]

Answer: $410.90\times 10^{-6} V$

Explanation:

Given

$A=5.5 mm^2$

$n=919 turns/cm\approx 85400 turns/m$

$\omega =226 rad/s$

According to the Faraday law of induction, induced emf is given by

$E=-\frac{\mathrm{d} \phi _B}{\mathrm{d} t}$

Magnetic field $\phi _B=B\cdot A$

$B=\mu _0ni=\mu _0ni_osin\left ( \omega t\right )$

$B=4\pi \times 10^{-7}\times 85400\times 3.08\times \sin (226t)$

$B=0.3305\sin (226t)$

$\phi _{B}=0.3305\times \sin (226t)\times 5.5\times 10^{-6}$

$\phi _{B}=1.818\times 10^{-6}\sin (226t)$

$E=-\frac{\mathrm{d} \phi _B}{\mathrm{d} t}$

$E=-1.818\times 10^{-6}\times 226\cos (226t)$

$E=-410.90\times 10^{-6}\cos (226t)$

Amplitude of EMF induced $=410.90\times 10^{-6} V$

8 0

3 years ago

Science homework help

matrenka [14]

1. electrons
2. positive to negative
3. insulator
4. TRUE
5. closed circuit
6. TRUE
7. series
8. TRUE
9. v=ir
10. TRUE

Hope this helps! :)

7 0

2 years ago

Identify and name the global wind belts. A. B. C. D. E. F. G.

Yuri [45]

Answer:

Explanation:

That is is the equator, prolly

6 0

2 years ago

When two hydrogen atoms bond, the positive nucleus of one atom attracts the a. negative nucleus of the other atom. c. negative e

Aleksandr-060686 [28]

Answer:

Explanation:

4 0

3 years ago

What is the relative velocity between two cars moving in the opposite direction with velocity 20m/s​

What is the relative velocity between two cars moving in the opposite direction with velocity 20m/s