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LenKa [72]
3 years ago
13

A musical tone sounded on a pi has frequency of 410 Hz and a wavelength of 0.80 m.

Physics
1 answer:
spayn [35]3 years ago
4 0
C. I did it bit i forgot how I did it
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A bowling ball with a negative initial velocity slows down as it rolls down the lane toward the pins. Is the bowling ballâs acce
stiv31 [10]

Answer:

positive

Explanation:

The ball is rolling down with a negative velocity, but the velocity is slowing down. therefore the velocity must increase in order for the ball to slow down.

For example let the ball's initial velocity be -15 m/s. and it  is slowing down to let's say -13 m/s. Well this means that it's velocity has increase by 2 m/s. So, its acceleration is positive.

5 0
3 years ago
A stationary boat in the ocean is experiencing waves from a storm. The waves move at 59 km/h and have a wavelength of 145 m . Th
krek1111 [17]

Answer:

The time elapses until the boat is first at the trough of a wave is 4.46 seconds.

Explanation:

Speed of the wave, v = 59 km/h = 16.38 m/s

Wavelength of the wave, \lambda=145\ m

If f is the frequency of the wave. The frequency of a wave is given by :

v=f\lambda\\\\f=\dfrac{v}{\lambda}\\\\f=\dfrac{16.38\ m/s}{145\ m}\\\\f=0.112\ Hz

The time period of the wave is given by :

T=\dfrac{1}{f}\\\\T=\dfrac{1}{0.112\ Hz}\\\\T=8.92\ s

We need to find the time elapses until the boat is first at the trough of a wave. So, the time will be half of the time period of the wave.

T=\dfrac{8.92}{2}\\\\T=4.46\ s

Hence, this is the required solution.

5 0
3 years ago
What type of device forms images through reflection?<br> Answer: Any mirror
inysia [295]

Answer:

wouldnt a phone be one it takes pictures through reflection like a mirror

6 0
3 years ago
Whats is the resistance of a bulb with a current of 60a in a circuit with a 12v battery
lara [203]

Answer:

60a in a circuit with a 12v battery

Explanation:

60a in a circuit with a 12v battery

6 0
2 years ago
A force 80N accelerates a 5kg body .Find the acceleration if the coefficient of friction is 0.44
allochka39001 [22]

Answer:

Explanation:

20n

4 0
3 years ago
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