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soldier1979 [14.2K]

3 years ago

9

Brian is repairing an old alarm clock. He needs to replace a device that converts the electric energy into sound energy. Which o

f these devices should he use?
A.
battery
B.
buzzer
C.
motor
D.
switch

2 answers:

Dmitry [639]3 years ago

6 0

This would be the answer b which is buzzer

kkurt [141]3 years ago

3 0

Heyo, the answer would be buzzer (B)
think of how the buzzer makes a sound due to the electric energy

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Answer:

Recoil speed, $1.17\times 10^{-5}\ m/s$

Explanation:

Given that,

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V is recoil speed of Callisto immediately after the collision.

$V=\dfrac{m_1v_1}{(m_2+m_2)}\\\\V=\dfrac{1.96\times 10^{13}\times 6.5\times 10^4}{(1.96\times 10^{13}+1.08\times 10^{23})}\\\\V=1.17\times 10^{-5}\ m/s$

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Answer:

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