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
Nezavi [6.7K]
2 years ago
5

Distance is 80 seconds is 8 what is the average speed?

Physics
1 answer:
True [87]2 years ago
8 0

Answer:

speed =distance /time

speed =80/8

speed =10m/s

You might be interested in
Which statement is true?
m_a_m_a [10]
It is actually HR signifies a house bill and s signifies a senate bill 

4 0
3 years ago
Read 2 more answers
At a distance of 8 m, the sound intensity of one speaker is 66 dB. If we were to place 3 speakers in a circle of radius 8 m, wha
ludmilkaskok [199]

Answer:

dβ = 70. 77 dβ

Explanation:

The intensity of sound in decibels is

         dβ = 10 log I/I₀

let's look for the intensity of this signal

         I / I₀ = 10 dβ/10

         I / I₀ = 3.981 10⁶

the threshold intensity of sound for humans is I₀ = 1 10⁻¹² W / m²

         I = 3.981 10 ⁶ 1 10⁻¹²

         I = 3,981 10⁻⁶ W / m²

It is indicated that 3 cornets are placed in the circle, for which total intensity is

        I_total - 3 I

        I_total = 3  3,981 10⁻⁶

        I_total = 11,943 10⁻⁶ W / m²

let's reduce to decibels

      dβ = 10 log (11,943 10⁻⁶/1 10⁻¹²)

      dβ = 10  7.077

      dβ = 70. 77 dβ

3 0
2 years ago
A 2.5-m-long steel shaft of 30-mm diameter rotates at a frequency of 35 Hz. Determine the maximum power that the shaft can trans
Phantasy [73]

Answer:

P=58.3kW

Explanation:

Given data

Length L=2.5 m

Radius R=d/2=30/2 = 15 mm

Torque based on allowable stress

Allowable shear stress τ=50 Mpa

Allowable torque  T=(π/2)τc³

T=\frac{\pi }{2}(50*10^{6} )(0.015)^{3} \\ T=264.94N.m

Torque based on allowable angle of twist

Allowable Angle of twist

Ф=7.5°

Ф=7.5×(π/180)=130.90×10⁻³ rad

Allowable torque

T=(GJФ)/L

T=(G(π/2)c⁴)Ф)/L

T=(πGc⁴Ф)/2

T=\frac{\pi (77.2*10^{9} )(0.015)^{4}(130.90*10^{-3} ) }{2}\\ T=265.07N.m

Maximum Power Transmitted

Maximum power transmitted is given by

P=2\pi fT\\P=2\pi (35)(265.07)\\P=58262.386watt\\P=58.3kW

6 0
3 years ago
What is the amplitude of the wave?
solniwko [45]

Answer:

1 meter for this wave

Explanation:

Amplitude is the height of the wave from the midline to the crest

3 0
2 years ago
What is hydrometer? Describe its use and any one type of hydrometer.​
nexus9112 [7]

Answer:

An instrument for measuring the density of liquids.

Explanation:

A hydrometer is an instrument used to determine specific gravity. It operates based on the Archimedes principle that a solid body displaces its own weight within a liquid in which it floats. Hydrometers can be divided into two general classes: liquids heavier than water and liquids lighter than water.

Thermohydrometers is one type of hydrometer.

7 0
2 years ago
Other questions:
  • A truck accelerates at 5m/s2. Find the truck's mass if the driver applies a force of 425N(can you also show free diagram)?
    8·2 answers
  • The rate constant for this second‑order reaction is 0.760 M−1⋅s−1 at 300 ∘C. A⟶products How long, in seconds, would it take for
    7·1 answer
  • Describe The energy conversions that occur when coal is formed, and then burned to produce thermal energy.
    8·1 answer
  • A stone is dropped into a lake, creating a circular ripple that travels outward at a speed of 50 cm/s. Find the rate at which th
    8·1 answer
  • Using Gauss's law, calculate the electric field at a point distance s from a long wire bearing uniform charge density. i need he
    11·1 answer
  • Which planet has a "great red spot"<br>​
    12·1 answer
  • Reclamation would be classified as a _____ human activity for the environment. Positive or negative?
    10·1 answer
  • If a 50 kg box was accelerated to 10 m/s2, how much force was used?
    6·1 answer
  • The obsessive disinhibition form of a craving is the result of dysfunction in the ___________ neurotransmitter.
    14·1 answer
  • I have a picture of the question I need help with,
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!