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2 years ago

The change in a pitch of a sound as an object moves closer or farther away is a result of

1 answer:

4 0

The Doppler effect is a change in the frequency of sound waves that occurs when the source of the sound waves is moving relative to a stationary listener. As the source of sound waves approaches a listener, the sound waves get closer together, increasing their frequency and the pitch of the sound.

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we had to drive 150 miles to the hotel we left at 1 p.m. and got there at 4 p.m. what is our average speed

marta [7]

The answer is 50mi/hr

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3 years ago

Read 2 more answers

Cole drives to school from home, starting from rest and accelerating for 10 minutes as he travels 6.0 km to school.

Firlakuza [10]

Explanation:

this is the answer for your question. if you have any doubt.

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2 years ago

One strategy in a snowball fight is to throw a snowball at a high angle over level ground. While your opponent is watching this

Afina-wow [57]

Answer: $27^{\circ}$

Explanation:

Given

Initial velocity of both snowball is 29.3 m/s

first snowball launch angle $=63^{\circ}$

Considering motion of snowball to be projectile

range is given by

$R=\frac{u^2\sin 2\theta }{g}$

$R=\frac{29.3^2\sin 126}{9.8}$

R=70.87 m-----1

If second snowball is thrown at an angle of \phi

$R=\frac{u^2\sin 2\phi }{g}$

$R=\frac{29.3^2\sin 2\phi }{9.8}$ ------2

$70.87=87.601\sin 2\phi$

$0.809=\sin \phi$

$2\phi can be 53.99^{\circ}$

or $180-2\phi =53.99^{\circ}$

Thus $\phi =26.995 \approx 27^{\circ}$

4 0

2 years ago

A 0.40-kg mass attached to the end of a string swings in a vertical circle having a radius of 1.8 m. At an instant when the stri

enyata [817]

Answer:

$T=8.1N$

Explanation:

From the question we are told that:

Mass m=0.40

Radius r=1.8m

Angle Beneath the Horizontal \theta =40 \textdegree

Speed v=5.0m/s

The Tension Angle

$\alpha=90-\theta\\\\\alpha=90-40$

$\alpha=50 \textdegree$

Generally the equation for Tension is is mathematically given by

$T=\frac{mv^2}{r}+mgcos \alpha$

$T=\frac{0.40*5^2}{1.8}+0.40*5cos50$

$T=8.1N$

7 0

2 years ago

Dexter needs to monitor the movement of a rover vehicle on Mars for one year. Which technologies should Dexter use for tracking

Contact [7]

Answer:

Satelites that collect information about the rover vehicle
Distance space stations that store real-time data about the rover vehicle
Doppler radar that records information about weather the rover is exposed to.

Explanation:

The first rover that landed on Mars was the Mars pathfinder (Sojourner) that landed on the 4th of July 1997.In total NASA has sent four rover to Mars.These are

Sojourner
Spirit
Opportunity
Curiosity

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3 years ago

The change in a pitch of a sound as an object moves closer or farther away is a result of​

The change in a pitch of a sound as an object moves closer or farther away is a result of