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3 years ago

Noooooooooooooooooooooooo

Physics

2 answers:

Afina-wow [57]3 years ago

5 0

Answer:

yes

Explanation:

Mademuasel [1]3 years ago

5 0

Answer:yeeeeeeeeeeeeeeeeeeeeeees

Explanation:

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A person hears a siren as a fire truck approaches and passes by. The frequency varies from 480Hz on approach to 400Hz going away

alekssr [168]

Answer:

31.2 m/s

Explanation:

$f_{app}$ = Frequency of approach = 480 Hz

$f_{aw}$ = Frequency of going away = 400 Hz

$V$ = Speed of sound in air = 343 m/s

$v$ = Speed of truck

Frequency of approach is given as

$f_{app} = \frac{Vf}{V - v}$ eq-1

Frequency of moving awayy is given as

$f_{aw} = \frac{Vf}{V + v}$ eq-2

Dividing eq-1 by eq-2

$\frac{f_{app}}{f_{aw}} = \frac{V + v}{V - v}$

$\frac{480}{400} = \frac{343 + v}{343 - v}$

$v$ = 31.2 m/s

7 0

3 years ago

U1=20 m/s turn it to km/h

notka56 [123]

It is 72 km/h
I hope it helps

7 0

3 years ago

In the diagram, q1, q2, and q3 are in a straight line.

schepotkina [342]

Answer:

did anyone figure it out

Explanation:

please help

3 0

2 years ago

Jeremy has a handful of resistors. All of them, except one, have four bands. The exception has three. Why? A. He should use anot

Art [367]

Answer: option B: The resistor has a tolerance of 20%.

Explanation:

Resistors are color coded to identify their value and function. For a 3- Band resistor, reading from the left, first band denotes first digit, second band depicts second digit and third color depicts the multiplier. The absence of fourth band means the resistor has tolerance 20%.

Hence, the correct answer is option B. The resistor has a tolerance of 20%.

7 0

3 years ago

A circular-motion addict of mass 83.0 kg rides a Ferris wheel around in a vertical circle of radius 13.0 m at a constant speed o

Svetllana [295]

Answer:

(A) Time period T = 6.28 SEC

(B) At highest point fore is - 575.83 N

(B) At lowest point force is 1050.97 N

Explanation:

We have given that mass m = 83 kg

Radius r = 13 m