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
Elena L [17]
3 years ago
10

A student is given a problem in which a car speeds up from rest to 30 m/s in 6 seconds. The student states that the acceleration

of the car is 30 m/s/s. Which is the best analysis of this answer? A) The student is correct. B) It is the velocity and not the acceleration which is 30m/s/s. C) The student forgot to divide by the time which would yield 5 m/s/s. D) The student forgot to multiply by the time which would yield 180 m/s/s.
Physics
1 answer:
MakcuM [25]3 years ago
5 0

The student forgot to divide by the time which would yield 5 m/s/s. (C)

You might be interested in
What is the average velocity of a train moving along a straight track if its displacement is 192 m was during a time period of 8
Alex

Answer:

The average velocity of a train moving along a straight track if its displacement is 192 m was during a time period of 8.0 s is 24 \frac{m}{s}.

Explanation:

Velocity ​​is a physical quantity that expresses the relationship between the space traveled by an object and the time used for it. Then, the average velocity relates the change in position to the time taken to effect that change.

velocity=\frac{displacement}{time}

Velocity considers the direction in which an object moves, so it is considered a vector magnitude.

In this case, the displacement is 192 m and the time period is 8 s. Replacing:

velocity=\frac{192 m}{8 s}

Solving:

velocity= 24 \frac{m}{s}

<em><u>The average velocity of a train moving along a straight track if its displacement is 192 m was during a time period of 8.0 s is 24 </u></em>\frac{m}{s}<em><u>.</u></em>

3 0
3 years ago
A small sphere has a harge of 9uC and other small sphere has a charge of 4uC.
Helga [31]

Answer:

Electrical force, F = 90 N

Explanation:

It is given that,

Charge on sphere 1, q_1=9\ \mu C=9\times 10^{-6}\ C

Charge on sphere 2, q_1=4\ \mu C=4\times 10^{-6}\ C

Distance between two spheres, d = 6 cm = 0.06 m

Let F is the electrical force between them. It is given by the formula of electric force which is directly proportional to the product of charges and inversely proportional to the square of distance between them such that,

F=k\dfrac{q_1q_2}{d^2}

F=9\times 10^9\times \dfrac{9\times 10^{-6}\times 4\times 10^{-6}}{(0.06)^2}

F = 90 N

So, the electrical force between them is 90 N. Hence, this is the required solution.

7 0
3 years ago
How long does water evaporation take? What factors influence it?
svetoff [14.1K]
There is no certain time on how long it takes. Because the factors will always be different and the factors heavily affect the evaporation time. Some factors include: humidity, heat, how the sun is visible (whether clouds are covering it or not)
7 0
3 years ago
Read 2 more answers
A horizontal line labeled B has an arrow labeled A strike it from right and above and then another arrow D emerges from the stri
patriot [66]

Answer:

c is the actual answer.

Explanation:

7 0
3 years ago
Read 2 more answers
Q) A farmer moves along the boundary of a
Alja [10]
The answer will be 8 because kedks
4 0
3 years ago
Other questions:
  • If a 3-kilogram iron ball is acted upon by a force of 3 newtons, what will be the result?
    5·1 answer
  • In a science fiction novel two enemies, Bonzo and Ender, are fighting in outer spce. From stationary positions, they push agains
    5·1 answer
  • Megan wants to see if mice that are fed food A or B grow at a faster rate. She measures the mass of the mice on day 1, then divi
    10·2 answers
  • The transfer of thermal energy between two bodies which are at different temperatures. The si unit for this is the joule. Genera
    12·2 answers
  • When the Moon orbits Earth, what is the centripetal force?
    8·1 answer
  • Two objects (42.0 and 21.0 kg) are connected by a massless string that passes over a massless, frictionless pulley. The pulley h
    7·1 answer
  • Calculate the current,if charges is 100c pass through ​
    6·1 answer
  • Remember to identify all your data, write the equation, and show your work.
    14·1 answer
  • Plains and mountains are examples of formed by processes that shape Earth's surface.
    12·1 answer
  • A horse runs counterclockwise (anticlockwise) around the circular track of radius m at a constant speed, starting at the marked
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!