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
Bezzdna [24]
4 years ago
11

In a thunder and lightning storm there is a rule of thumb that many people follow. After seeing the lightning, count seconds to

yourself. If it takes 5 seconds for the sound of the thunder to reach you, then the lightning bolt was 1 mile away from you. Sound travels at a speed of 331 meters/second. How accurate is the rule of thumb? Express your answer as a percent error.
Physics
1 answer:
lubasha [3.4K]4 years ago
3 0

Answer:

2.837% less than actual value.

Explanation:

Based on given information let's calculate our value.

S = Vxt = 331m/s x 5s = 1655m, that is the total distance that sound would travel in 5 seconds.

1mile = 1609.34meters.

percentage error is.

\frac{actual-calculated}{actual} *100 = \frac{1609.34-1655}{1609.34} *100 = -2.83%

negative indicates less than actual value.

You might be interested in
a child stands with each foot on a different scale. The left scale reads 200N and the right scale reads 150N. what is her mass i
vitfil [10]

Answer:

35.7 kg

Explanation:

We are given that

Left scale reads =200N

Right scale reads=150 N

We have to find the mass in kg.

We know that

Weight  of child= Sum of two scales=200+150=350 N

Acceleration due to gravity=9.8 m/s^2

We know that

Weight= mg

Using the formula

350=9.8 m

m=\frac{350}{9.8}=35.7 kg

Hence, the mass of child=35.7 kg

4 0
3 years ago
A tourist being chased by an angry bear is running in a straight line toward his car at a speed of 3.60 m/s. The car is a distan
In-s [12.5K]

Answer:

101 meters

Explanation:

Distance traveled by the tourist:

d = 3.60 m/s × t

Distance traveled by the bear:

d + 39.3 m = 5.00 m/s × t

Substitute:

3.6 t + 39.3 = 5 t

39.3 = 1.4 t

t = 28.1

d = 101

7 0
3 years ago
What is a chunk of rock or dust from space
Readme [11.4K]
It's either a comet or asteriod
8 0
3 years ago
Read 2 more answers
The blue mass in the image is 10kg.
Virty [35]
I think it’s a correct me if i’m wrong
6 0
4 years ago
Read 2 more answers
A ball on a string makes 15.0 revolutions in 6.37s, in a circle of radius 0.230m. what is its centripetal acceleration?(unit=m/s
Zanzabum

Answer:

50.3 m/s²

Explanation:

Centripetal acceleration is:

a = v² / r

where v is velocity and r is radius.

First, calculate the velocity.  Velocity is distance divided by time.  The distance is the number of circumferences traveled by the ball.

v = x / t

v = (15.0 × 2π × 0.230 m) / 6.37 s

v = 3.40 m/s

Therefore:

a = (3.40 m/s)² / 0.230 m

a = 50.3 m/s²

7 0
3 years ago
Other questions:
  • Which of the following diagrams involves an upright image
    7·1 answer
  • A particle is located on the x axis 4.9 m from the origin. A force of 38 N, directed 30° above the x axis in the x-y plane, acts
    9·1 answer
  • Keeping in mind the kinetic energy of a moving vehicle, how can a driver best prepare to enter sharp curves in the roadway? FIRS
    7·1 answer
  • The x and y components of vector S are -30.0 m and +40.0 m, respectively. Find the magnitude of S and the angle between the dire
    6·2 answers
  • A rocket initially at rest accelerates at a rate of 99.0 meters/second2. Calculate the distance covered by the rocket if it atta
    12·1 answer
  • 1. A city bus travels 6 blocks east and 8 blocks north. Each block is 100 m long. If the bus travels this distance in 15mins, wh
    13·1 answer
  • Given the scenario: A 45 kg. object is being pushed north with a force of 8N, and at the same time, it is been pushed east with
    11·1 answer
  • The Northern and Southern Hemispheres face the sun evenly. What do the hemispheres experience at that time?(1 point)
    6·1 answer
  • A wave has a wavelength of 125 meters is moving at a speed of 20 m/s. What is it frequency? ​
    10·1 answer
  • A racing car has a uniform acceleration of 5 metre per second square what distance will it cover in 10 seconds after the start
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!