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
dmitriy555 [2]
3 years ago
14

A substance contains only one type of atom. The substance is a/an ____________. A. solution B. element C. mixture D. compound

Physics
2 answers:
masha68 [24]3 years ago
7 0

Answer:

the answer is b

Explanation:

Alex17521 [72]3 years ago
3 0
The answer to this question is:B. Element









You might be interested in
A car traveling in a straight line has a velocity of 6m/s at some instant. After 6.32s its velocity is 13.2m/s . What is the ave
NeX [460]
Average acceleration  =  (change in speed) / (time for the change) .

Average acceleration  =  (13.2 - 6) / (6.32) = 7.2 / 6.32 = about  <em>1.139... m/s²</em> .
8 0
3 years ago
An object is dropped from rest from a 70.6 m tower. Air resistance is negligible. After 0.32 seconds, what is magnitude and dire
dem82 [27]

Answer:

<em>1,378.9ms²</em>

Explanation:

Given the following

Distance S = 70.6m

Time t = 0.32secs

Initial velocity = 0m/s

Required

Acceleration

Using the equation of motion

S = ut+1/2at²

Substitute

70.6 = 0+1/2a(0.32)²

70.6 = 0.0512a

a = 70.6/0.0512

a = 1,378.9

<em>Hence the acceleration is 1,378.9ms²</em>

7 0
2 years ago
Water enters a cylindrical tank through two pipes at rates of 250 and 100 gal/min. If the level of the water in the tank remains
tester [92]

Answer:

The total amount of water that enters the tank is:

250 gal/min + 100 gal/min = 350gal/min.

Then, if the level of the water remains constant, this means that the water leaves the tank at a rate of 350gal/min.

We know that the diameter of the pipe is 8 inches, then the area of the pipe is:

A = pi*(d/2)^2 = 3.14*(4in)^2 = 50.24in^2

now, the flow can be calculated as:

Q = v*A = (velocity*area)

if we want to write our velocity in inches per minute, then we need to write the entering flow in cubic inches:

1 gallon = 231 in^3

then:

350gal/min = (350*231) in^3/min = 80,850 in^3/min.

Then the water that leaves the tank must be the same amoun, we have:

Q = 80,850 in^3/min. = v*A = v*50.24in^2

v =  (80,850in^3/min)/50.24in^2 = 1609.3 in/min.

The velocity of the flow leaving the tank is 1609.3 in/min.

3 0
3 years ago
If an object is moving eastward and slowing down, then the direction of its acceleration is
Alchen [17]
C. Eastward. Acceleration is the change in speed so it can be a positive (speeding up) or negative (slowing down) acceleration
4 0
2 years ago
Everything in the universe is made up of what A.atoms B.minerals C.nitrogen ​
Montano1993 [528]

Answer: A) Atoms.

Explanation:

5 0
2 years ago
Read 2 more answers
Other questions:
  • 60mil/hr to m/s convert
    14·1 answer
  • Which of the following is true about natural selection?
    9·1 answer
  • The floor of a railroad flatcar is loaded with loose crates having a coefficient of static friction of 0.420 with the floor. If
    7·1 answer
  • If the force being applied to an object is doubled, what will happen to its<br> acceleration?
    12·1 answer
  • HELPPPP MEEEEEEEEEEE Work = force × distance (W = Fd) In which scenario is the most work done?
    9·1 answer
  • A 0.700-kg particle has a speed of 1.90 m/s at point circled A and kinetic energy of 7.20 J at point circled B. (a) What is its
    7·1 answer
  • If the intensity level by 15 identical engines in a garage is 100 dB, what is the intensity level generated by each one of these
    8·1 answer
  • sketch a graph of position vs. time for a person starting 0.4 m away and standing still. Include an explanation of your predicti
    8·1 answer
  • volcanoes can form along all of the following except a) transform boundaries b) hot spots c) convergent boundaries d) divergent
    6·2 answers
  • The net force on the propeller of a 3.2 kg model airplane is 7.0N forward. What is the acceleration of the airplane? If it start
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!