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
horrorfan [7]
3 years ago
10

A car accelerates from rest (zero speed) up to a speed of 30m/s in 12

Physics
1 answer:
il63 [147K]3 years ago
7 0

Answer:

Explanation:

v=u+at

30=0+a×12

30=12a

a=\frac{30}{12}

a=2.5ms⁻²

You might be interested in
Explain three ways you can get home safely, without getting behind the wheel, if there are drugs or alcohol in your system.
Ad libitum [116K]
Call your parent, call a local taxi ,or a sober friend
4 0
3 years ago
Predict changes in state according to change in particle motion. Know the vocabulary used to describe changes of state.
ziro4ka [17]

The change in the state of matter causes change in the motion of the particles of the matter. The gaseous state of matter has the greatest speed while the solid state has the least speed.

The change in state of every matter is accompanied by lost or gained of energy.

Example is water.

The solid state of water is ice. The motion of particles of the water is relatively zero because the molecules are held at a fixed position.

The liquid state of water occurs when the temperature of the ice is increased above zero degree Celsius. The speed of the particles of water in liquid state is greater than solid state.

The gaseous state of water occurs when the temperature of the liquid water is increased beyond 100 degree Celsius. The speed of water in gaseous state is greater than liquid state.

Learn more about different state of matter here: brainly.com/question/9402776

7 0
2 years ago
Consider horizontal parallel plates with a fixed potential difference. The upper plate has a voltage difference of 30 V with the
BlackZzzverrR [31]

relation between potential difference and electric field is given as

E . d = \Delta V

so here we know that

d = 3 cm

\Delta V = 30 V

E \times 0.03 = 30

E = 1000 N/C

So now when plates are separated to 4 cm distance carefully

the potential difference between them will change but the electric field between them will remain constant

So at distance of 4 cm also the electric field will be E = 1000 N/C

5 0
3 years ago
Which change will cause the gravitational force between a baseball and a soccer ball to increase ? Check all that apply
Alex73 [517]
Moving the balls closer together pumping more air into the soccer ball putting the baseball in a plastic case 
4 0
3 years ago
Read 2 more answers
What is the efficiency (w/qh) of an ideal carnot heat engine operating between a hot region at t= 400 k and a cold one at t= 300
Vinvika [58]
The efficiency of an ideal Carnot heat engine can be written as:
\eta = 1-  \frac{T_{cold}}{T_{hot}}
where
T_{cold} is the temperature of the cold region
T_{hot} is the temperature of the hot region

For the engine in our problem, we have T_{cold}=300 K and T_{hot}=400 K, so the efficiency is
\eta= 1 - \frac{300 K}{400 K}=0.25
4 0
3 years ago
Other questions:
  • Graylag goslings imprint on a nearby object that moves away from them during a sensitive period in the first few hours after the
    10·1 answer
  • If an atom had a nucleus 1 ft in diameter, what would be the diameter of the atom, in miles? (1 mi = 5,280 ft)
    7·1 answer
  • The difference in electric potential between a thunder cloud and the ground is 1.53 108 V. Electrons move from the ground which
    15·1 answer
  • The development of sperm cells
    13·2 answers
  • If a spring requires 20 Newtons to be compressed a distance of 10 centimeters, what is the spring constant in N/m (newton meters
    13·1 answer
  • A ball having a weight of 1.5 N is dropped from a height of 4 meters. (Neglect air friction.) How much mechanical energy is "los
    8·2 answers
  • The diver on the diving board is 10 meters high and has a mass of 0.050kg, what is his GPE?
    15·1 answer
  • Can anyone explain<br>if knows​
    7·2 answers
  • When the apple fall towards tje earth tje earth move up to meet the apple.Os it true.If yes why is the earth motion not noticeab
    5·1 answer
  • By measuring the potential energy of an object relative to the ground, and the object's mass, you can calculate its speed when i
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!