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
erastova [34]
3 years ago
5

A violinist is tuning her violin to 440Hz. She plays the note while listening to an electronically generated tone and hears 3Hz,

which increases to 4Hz when she tightens the violin. What was the frequency of the note played by the violin when she heard the 3 Hz beats
Physics
1 answer:
BartSMP [9]3 years ago
5 0

Answer:

X=438Hz

Explanation:

From the question we are told that:

Beat Frequency Fb=440Hz

Actual Frequency F_a=3Hz

Generally the equation for Frequency Heard X is mathematically given by

X=beat\ frequency\ +\ actual\ frequency

X=F_a+Fb

X= 440Hz+3Hz

X=438Hz

You might be interested in
Clois what is the weight of a body in the earth, if its weig is 5Nin moon? <br>​
Debora [2.8K]

Explanation:

because the moon has less mass than earth, the force due to gravity at the lunar surface is only about 1/6 that on earthso,the weight of a body on earth is 6×5N =30N

8 0
3 years ago
What is the main fuel consumed in the core of a red giant?<br> a. H<br> b. C<br> c. Fe<br> d. He
vladimir1956 [14]
<span>What is the main fuel consumed in the core of a red giant?
The </span><span>main fuel consumed in the core of a red giant is He or helium. The answer is letter D.</span>
4 0
3 years ago
Wind power holds great promise for the united states because of the _____________, and experts believe wind energy could meet as
SIZIF [17.4K]
Wind<span> power holds great promise for the united states because of the great wind power (capacity), and experts believe wind energy could meet as much as 20 percent of the nation’s energy needs . Texas is the state with most wind capacity. On the second place is Iowa and oh the third place Oklahoma. The wind farms produce clean energy that does not harm the environment.</span>
6 0
3 years ago
How does water get up to the atmosphere, and how does it get back down to earth surface
IrinaK [193]

Answer:

Water gets up to the Earth's atmosphere by evaporating from a body of water, which is then they become water vapor. It returns back to the surface by returning back to its water state and falling back down (as rain). The water vapor turns into clouds (clouds are really just water droplets), and when it cannot hold anymore waters, it disperses all the water (by raining).

6 0
3 years ago
For a demonstration, a professor uses a razor blade to cut a thin slit in a piece of aluminum foil. When she shines a laser poin
Art [367]

Answer:

width of slit(a)≅ 0.1mm

Explanation:

Wave length of laser pointer =λ = 685 nm

Distance between screen and slit = L = 5.5 m

Width of bright band = W=8.0cm=0.08m

width of slit=a

recall the formula;

W=(2λL)/a

a=2λL/W

a=(2 *685*10⁻⁹*5.5m)/0.08m

a=7535*10⁻⁹/0.08

a=94187.5 *10⁻⁹

a=0.0000941875m

a=0.0941875mm

a≅0.1mm

5 0
3 years ago
Read 2 more answers
Other questions:
  • A linear accelerator uses alternating electric fields to accelerate electrons to close to the speed of light. A small number of
    5·1 answer
  • Find the voltage across and power absorbed by the 25 ohm resistor.
    12·1 answer
  • ametal of mass 0.6kg is heated by an electric heater connected to 15v batter when the ammeter reading is 3A its tempeeature rise
    7·1 answer
  • 1. A fixed pulley is a machine that increases the effort force.
    13·1 answer
  • The force on a current-carrying wire is a maximum when the current is moving parallel to a magnetic field. true or false
    11·1 answer
  • PLEASE HELP ASAP!!! CORRECT ANSWER ONLY PLEASE!!! I CANNOT RETAKE THIS!!
    14·1 answer
  • Two ice skaters suddenly push off against one another starting from a stationary position. The 45-kg skater acquires a speed of
    12·1 answer
  • 6. Can an object accelerate, but not speed up or slow down?<br> Explain:
    7·1 answer
  • Dòng điện I = 20 A chạy qua đoạn dây dẫn có dạng như hình vẽ. Biết bán kính của cung tròn là R = 5 cm. Tính cường độ từ trường t
    13·1 answer
  • What is inertia? That is all but I need 20 characters to ask lol
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!