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
Setler79 [48]
3 years ago
5

your neighbour is throttling his recent bought motorbike to show off. the sound intensity measured at your window 16m away is 0.

25W/m^2. what is the sound intensity level in dB at your friend's house, a distance of 28m away from the noisy bike?
Physics
1 answer:
aivan3 [116]3 years ago
8 0

Answer:

hi your pinterest I'd or Twitter I'd pls.

You might be interested in
Julian is having trouble coping with stress and setting goals. What is he most likely struggling with?
klio [65]
I would say Emotional health. Just because it is more sensable
6 0
3 years ago
Read 2 more answers
I was driving along at 20 m/s, trying to change a CD and not watching where I was going. When I looked up, I found myself 45 m f
cricket20 [7]

Answer:

a=4.44\frac{m}{s^2}

Explanation:

First we have to find the time required for train to travel 60 meters and impact the car, this is an uniform linear motion:

t=\frac{d}{v}\\\\t=\frac{60m}{30\frac{m}{s}}=2s

The reaction time of the driver before starting to accelerate was 0.50 seconds. So, remaining time for driver is 1.5 seconds.

Now, we have to calculate the distance traveled for the driver in this 0.5 seconds before he start to accelerate. Again, is an uniform linear motion:

d=vt\\d=20\frac{m}{s}(0.5s)=10m

The driver cover 10 meters in this 0.5 seconds. So, the remaining distance to be cover in 1.5 seconds by the driver are 35 meters. We calculate the minimum acceleration required by the car in order to cross the tracks before the train arrive, Since this is an uniformly accelerated motion, we use the following equation:

d=v_0t+\frac{1}{2}at^2\\a=\frac{2(d-v_0t)}{t^2}\\a=\frac{2(35m-20\frac{m}{s}*1.5s}{(1.5s)^2}\\a=4.44\frac{m}{s^2}

7 0
3 years ago
Calculate the force of a particle with a net charge of 170 coulombs traveling at a speed of 135 meters/second perpendicular to t
amm1812

Answer:

F=1.14N j

Explanation:

The magnitude of the magnetic force over a charge in a constant magnetic field is given by the formula:

|\vec{F}|=|q\vec{v} \ X\ \vec{B}|=qvsin\theta  (|)

In this case v and B vectors are perpendicular between them. Furthermore the direction of the magnetic force is:

-i X k = +j

Finally, by replacing in (1) we obtain:

\vec{F}=(170C)(135\frac{m}{s})(5.0*10^{-5}T)=1.14N\ \hat{j}

hope this helps!

6 0
3 years ago
Read 2 more answers
An escalator is used to move 25 passengers every minute from the first floor of a department store to the second. The second flo
kompoz [17]

Answer:

55960 J

Explanation:

8 0
3 years ago
Read 2 more answers
HELP PLEASE...
skad [1K]
Ya because they’re are both 50 liters
7 0
2 years ago
Other questions:
  • Biologists think that some spiders "tune" strands of their web to give enhanced response at frequencies corresponding to those a
    6·1 answer
  • What physics concept underlies these three observations? When passing an oncoming truck on the highway, your car tends to sway t
    6·1 answer
  • What temperature is the speed of a given chemical reaction the fastest?
    9·1 answer
  • If an object is not moving, what’s the net force?
    9·2 answers
  • Why isn't nuclear fusion used to generate electric energy in power plants?
    12·2 answers
  • starting from rest , a formula one car accelerates uniformly at 25m\s2 for 30secs. what distance does it cover in the last one s
    7·1 answer
  • A raft has a mass of 152 kg. When a
    9·2 answers
  • A car moves in a straight line at a speed of 68.5 km/h. How far (in km) will the car move in 5.45 minutes at this speed?
    8·1 answer
  • Which of the following is NOT true in terms of what to consider when judging eye witness accounts?
    5·1 answer
  • Difference between compound and element?
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!