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
Alla [95]
3 years ago
10

How could you record the number 4000 and report 2 significant figures?

Physics
1 answer:
yawa3891 [41]3 years ago
5 0

Explanation:

Write in scientific notation.

4000 = 4.0×10³

You might be interested in
The state of a medium affect the speed of sound
fenix001 [56]

Answer:

no it can not effect the speed of sound not shure tho

5 0
2 years ago
What is the average speed of a car that travels 40 mph for 1 hour and 60 mph in another hour?
svetoff [14.1K]

Average speed = (total distance covered) / (time to cover the distance)

-- Traveling at 40 mph for 1 hour, the distance covered is 40 miles.

-- Traveling at 60 mph for 1 hour, the distance covered is 60 miles.

-- Total distance covered = (40 miles) + (60 miles) = 100 miles

-- Total time = (1 hour) + (1 hour)  =  2 hours

-- Average speed = (100 miles) / (2 hours)

<em>Average speed = 50 miles per hour</em>

6 0
3 years ago
Describe how elements are formed in stars.
elena-14-01-66 [18.8K]

Answer:

Stars create new elements in their cores by squeezing elements together in a process called nuclear fusion.

Explanation:

6 0
2 years ago
A sailboat runs before the wind with a constant speed of 2.8 m/s in a direction 52° north of west. How far (a) west and (b) nort
vodka [1.7K]
<h2>Displacement along west = 3612 m</h2><h2>Displacement along north = 4633.50 m</h2>

Explanation:

Let east be positive x axis and north be positive y axis

Velocity of boat = 2.8 m/s in a direction 52° north of west.

Velocity, v = -2.8 cos 52 i + 2.8 sin 52 j = -1.72 i + 2.21 j m/s

Time taken = 35 min = 35 x 60 = 2100 s

Displacement = Velocity x Time

Displacement =  (-1.72 i + 2.21 j)  x 2100

Displacement =  -3612 i + 4633.50 j m

Displacement along west = 3612 m

Displacement along north = 4633.50 m

6 0
3 years ago
Avogadro‘s number was calculated by determining The number of atoms in
Lady_Fox [76]

Answer:

12 grams of the isotope carbon-12.

Explanation:

hope it helps you and give me a brainliest

7 0
2 years ago
Other questions:
  • Coal is generally formed from high heat and pressure turning _____________ into a fossil fuel. oil and natural gas are generally
    14·1 answer
  • A 140 g ball at the end of a string is revolving uniformly in a horizontal circle of radius 0.537 m. The ball makes 2.27 revolut
    5·1 answer
  • An object is accelerating if there is a change in speed and/ or which factor A.Time B.Position C.Direction D.Displacment
    5·2 answers
  • Rowan is walking in a shallow, clear bay, in still water just over her knees. When she looks down at her feet in the sand, she n
    10·1 answer
  • Scouts at a camp shake the rope bridge they have just crossed and observe the wave crests to be 9.70 m apart. If they shake the
    9·1 answer
  • A car goes 4 south and 3 m East. Find the resultant vector using Tip-Tail method.
    10·1 answer
  • Gravity causes objects to be attracted to one another. This attraction keeps our feet firmly planted on the ground and causes th
    7·1 answer
  • The electric motor has an input energy of 50,000 joules each second. The motor transfers 35,000 joules of useful energy each sec
    14·1 answer
  • On topographic maps, contour lines that are farther apart indicate what ?
    6·1 answer
  • In a bell-shaped curve, the x-axis (horizontal direction) of the graph represents which of the following
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!