answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Alexus [3.1K]
2 years ago
5

The wavelength of the sound is 0.750m. What is the frequency?

Physics
1 answer:
kifflom [539]2 years ago
6 0

wavelength = speed/frequency


 ==> freq. = speed/wavelength = 342.5/0.75 = 456.67 Hz.

You might be interested in
What phenomenon does this image demonstrate? *
Ostrovityanka [42]

Answer:

Constructive Interference

Explanation:

8 0
2 years ago
Read 2 more answers
The k of a material is defined as the resistance of the wire made from that material which is ? long, and in diameter.
Elodia [21]
90 meaters longer than you
8 0
2 years ago
An LR circuit contains an ideal 60-V battery, a 42-H inductor having no resistance, a 24-ΩΩ resistor, and a switch S, all in ser
s2008m [1.1K]

Answer:

1.6 s

Explanation:

To find the time in which the potential difference of the inductor reaches 24V you use the following formula:

V_L=V_oe^{-\frac{Rt}{L}}

V_o: initial voltage = 60V

R: resistance = 24-Ω

L: inductance = 42H

V_L: final voltage = 24 V

You first use properties of the logarithms to get time t, next, replace the values of the parameter:

\frac{V_L}{V_o}=e^{-\frac{Rt}{L}}\\\\ln(\frac{V_L}{V_o})=-\frac{Rt}{L}\\\\t=-\frac{L}{R}ln(\frac{V_L}{V_o})\\\\t=-\frac{42H}{24\Omega}ln(\frac{24V}{60V})=1.6s

hence, after 1.6s the inductor will have a potential difference of 24V

3 0
2 years ago
A 120-kg refrigerator that is 2.0 m tall and 85 cm wide has its center of mass at its geometrical center. You are attempting to
Mademuasel [1]

To solve this problem it is necessary to apply the concepts related to Force of Friction and Torque given by the kinematic equations of motion.

The frictional force by definition is given by

F= \mu mg

Our values are here,

\mu=0.3

m=120kg

g=9.8m/s^2

Replacing,

F=0.30*120*9.8 = 352.8N

Consider the center of mass of the body half its distance from the floor, that is d = 0.85 / 2 = 0.425m. The torque about the lower farther corner of the refrigerator should be zero to get the maximum distance, then

F*x = mg*d

Re-arrange for x,

x= \frac{mg*d}{F}

x= \frac{mg*d}{\mu mg}

x= \frac{d}{\mu}

x= \frac{0.425}{0.3}

x = 1.42m

Then we can conclude that 1.42m is the distance traveled before turning.

6 0
2 years ago
A yo-yo is made from two uniform disks, each with mass m and radius R, connected by a light axle of radius b. A light, thin stri
schepotkina [342]

Answer:

linear acceleration

a = \frac{2g}{2 + \frac{R}{b}}

angular acceleration

\alpha = \frac{2g}{R(2 + \frac{R}{b})}

Explanation:

As we know that the force due to tension force is upwards while weight of the disc is downwards

so we will have

2mg - T = 2ma

also we have

Tb = (\frac{1}{2}mR^2 + \frac{1}{2}mR^2)\alpha

now we have

Tb = mR^2(\frac{a}{R})

T = \frac{mRa}{b}

now we have

2mg = (2ma + \frac{mRa}{b})

a(2 + \frac{R}{b}) = 2g

so we have

linear acceleration

a = \frac{2g}{2 + \frac{R}{b}}

angular acceleration

\alpha = \frac{2g}{R(2 + \frac{R}{b})}

4 0
2 years ago
Other questions:
  • Which equation is most likely used to determine the acceleration from a velocity vs:time graph?
    11·2 answers
  • The headlights are shining on a truck travelling at 100 km/h. The speed of the light from the headlights relative to the road wi
    10·2 answers
  • The dry adiabatic rate of change for unsaturated air is 10°c/1000 m. what does this mean
    13·1 answer
  • Which of the following expressions will have units of kg⋅m/s2? Select all that apply, where x is position, v is velocity, m is m
    10·1 answer
  • A rectangular billboard 5 feet in height stands in a field so that its bottom is 6 feet above the ground. A nearsighted cow with
    5·2 answers
  • As a 15000 kg jet plane lands on an aircraft carrier, its tail hook snags a cable to slow it down. The cable is attached to a sp
    14·1 answer
  • Suppose the truck that’s transporting the box In Example 6.10 (p. 150) is driving at a constant speed and then brakes and slows
    15·1 answer
  • A carousel - a horizontal rotating platform - of radius r is initially at rest, and then begins to accelerate constantly until i
    5·1 answer
  • wheel rotates from rest with constant angular acceleration. Part A If it rotates through 8.00 revolutions in the first 2.50 s, h
    10·1 answer
  • The speed of sound in air changes with the temperature. When the temperature T is 32 degrees Fahrenheit, the speed S of sound is
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!