1answer.
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
Brut [27]
2 years ago
5

A 800hz tuning fork is vibrating, producing a sound wave in the air.

Physics
1 answer:
blsea [12.9K]2 years ago
3 0

Answer:

The frequency of the sound wave is 800Hz

The speed of sound in a is about 340m/s.

Velocity = frequency x wavelength

making wavelength the subject formula

wavelength = Velocity/frequency.

wavelength = 340/800

wavelength = 0.425m.

You might be interested in
I hit a 2.5kg hockey puck which results in an acceleration of 10 m/s squared what is the force i exerted on the puck
Studentka2010 [4]

newton's law 2 ... f=ma ... f=2.5x10=25N


8 0
3 years ago
Radiant heat makes it impossible to stand close to a hot lava flow. Calculate the rate of heat loss by radiation from 1.00 m^2 o
myrzilka [38]

Answer:

259.274 kW

Explanation:

Given:

Area of the lava, A = 1.00 m²

Temperature of the surrounding, T₁ = 30.0° C = 303 k

Temperature of the lava, T₂ = 1190° C = 1463 K

emissivity, e = 1

Now,

from the Stefan-Boltzmann law of radiation the rate of heat loss is given as,

u = σeA(T₂⁴ - T₁⁴)

where,

u = rate of heat loss

σ = Stefan-Boltzmann constant =  5.67 × 10⁻⁸ W/m²∙K⁴

on substituting the respective values, we get

u = 5.67 × 10⁻⁸ × 1 × 1 × (1463⁴ - 303⁴)

or

u = 259274.957 W

or

u = 259.274 kW

7 0
3 years ago
An aluminum sphere is 8.55 cm in diameter. What will be it's % change in volume if it is heated from 30 C to 155 C?
Ghella [55]

We know that

• The sphere diameter is 8.55 cm.

,

• The temperature change is from 30 C to 155 C.

First, we have to find the radius of the sphere. The radius is the half diameter.

\begin{gathered} r=\frac{d}{2}=\frac{8.55\operatorname{cm}}{2} \\ r=4.275\operatorname{cm} \end{gathered}

Now we have to find the volume of the sphere using the following formula.

V=\frac{4}{3}\pi(r)^3

Where r = 4.275 cm.

\begin{gathered} V=\frac{4}{3}\pi(4.275\operatorname{cm})^3 \\ V\approx327.26(cm)^3 \end{gathered}

Then, we use the following formula

V_2-V_1=BV_0(T_2-T_1)

Where the initial volume is 327.26 cubic cm, B is a constant about thermal expansion for aluminum, and we have to find the final volume to then calculate the percentage change.

\begin{gathered} \Delta V=75\times10^{-6}\cdot327.26(155-30) \\ \Delta V=75\times10^{-6}\cdot327.26(125) \\ \Delta V\approx3.07(cm)^3 \end{gathered}

This means that the volume change is 3.07 cubic centimeters.

At last, we have to divide the volume change by the initial volume, and then we have to multiply it by 100% to express it as a percentage.

\frac{\Delta V}{V_1}\times100=\frac{3.07}{327.26}\times100\approx0.938<h2>Therefore, the percentage change is 0.938%.</h2>

5 0
1 year ago
What is a suggested solution to a scientific problem
balandron [24]
Idk characteristics
6 0
3 years ago
What is the relationship between velocity and kinetic energy?
faltersainse [42]

Answer:

when an object has more velocity, it tends to have less potential energy and more kinetic energy.

Explanation:

kinetic energy is the energy of movment and velocity helps to describe movement

4 0
4 years ago
Other questions:
  • A 6.0-ohm resistor that obeys Ohm’s Law is connected to a source of variable potential difference. When the applied voltage is d
    8·1 answer
  • In what ways has genetic engineering been used in agriculture to increase the amount of harvested food?
    11·2 answers
  • Which one is not a cell of the immune system?
    6·2 answers
  • A "gauge 8" jumper cable has a diameter d of 0.326 centimeters. The cable carries a current I of 30.0 amperes. The electric fiel
    6·1 answer
  • Which of these can harm the human ear?
    5·1 answer
  • 10. A cyclist travels at 15m/s for 4 minutes. How far does she go?
    6·1 answer
  • In which thermodynamic process work done maximum
    9·1 answer
  • In a ballistic pendulum an object of mass m is fired with an initial speed v0 at a pendulum bob. The bob has a mass M, which is
    6·1 answer
  • 1. Compare and contrast the two kinds of waves.
    12·1 answer
  • How do you think this could affect Earth and<br> the organisms that live on our planet?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!