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Gelneren [198K]
3 years ago
8

A 7.0 kg bowling ball traveling at 2.0 m/s collides with a stationary 0.5 kg beach ball in

Physics
1 answer:
vovangra [49]3 years ago
5 0

Answer:

D 7.0 m/s

Explanation:

MU+mu=MV+mv

7×2+0.5×0 =7×1.5+0.5×v

14+0=10.5+0.5v

14-10.5= 0.5v

3.5=0.5v

0.5v0.5 =3.5/0.5

v= 7m/s

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Scientists studying an anomalous magnetic field find that it is inducing a circular electric field in a plane perpendicular to t
bija089 [108]

This question is incomplete, the complete question is;

Scientists studying an anomalous magnetic field find that it is inducing a circular electric field in a plane perpendicular to the magnetic field. The electric field strength 1.5 m from the center of the circle is 7 mV/m.

At what rate is the magnetic field changing?

Answer:

the magnetic field changing at the rate of 9.33 m T/s

Explanation:

Given the data in the question;

Electric field E = 7 mV/m

radius r = 1.5 m

Now, from Faraday law of induction;

∫E.dl = d∅/dt

E∫dl = A( dB/dt )

E( 2πr ) = πr² ( dB/dt )

( 0.007 ) = (r/2) ( dB/dt )

( 0.007 ) = 0.75 ( dB/dt )

dB/dt = 0.007 / 0.75

dB/dt = 0.00933 T/s

dB/dt = ( 0.00933 × 1000) m T/s

dB/dt = 9.33 m T/s

Therefore, the magnetic field changing at the rate of 9.33 m T/s

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3 years ago
An unknown galaxy has a large flattened core. Which of the following classifications would best fit this galaxy's description? I
Alja [10]

Answer:

Spiral

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Explanation:

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3 years ago
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Which one of the following is not a fundamental physical quantity??! A. Temperature b. Current c. Area d. Mass​
Hatshy [7]

Answer:

Out of this, Area is not a fundamental physical quantity.

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3 years ago
Me izz in canada hehe Xd<br>just in 2 mins wow​<br><br>what is immunization?
Kruka [31]

Answer:

Immunization, or immunisation, is the process by which an individual's immune system becomes fortified against an infectious agent.

Explanation:

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2 years ago
THE RIGHT ANSWER WILL RECEIVE A BRAINLESS AND POINTS AND THANKS!!! THE RIGHT ANSWER WILL RECEIVE A BRAINLESS AND POINTS AND THAN
timurjin [86]

Answer:

f_{o} = 391.67 Hz

Explanation:

The sound of lowest frequency which is produced by a vibrating sting is called its fundamental frequency (f_{o}).

The For a vibrating string, the fundamental frequency (f_{o}) can be determined by:

f_{o} = \frac{v}{2L}

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f_{o} = 391.6667 Hz

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