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
victus00 [196]
2 years ago
15

The speed of a car is 40m/s after 10 sec suddenly there was a crowd and the driver reduces its speed to 20m/s. What is the decel

eration of the car?
Physics
1 answer:
aliya0001 [1]2 years ago
4 0

Explanation:

the number 0.4 in P4 from east

You might be interested in
The waves with the lowest energy and lowest frequencies of the electromagnetic spectrum are the
Andru [333]
<span>The waves with the lowest energy and lowest frequencies of the electromagnetic spectrum are the "Radio waves"

So, option B is your answer

Hope this helps!
</span>
5 0
3 years ago
2. Anna mixes 200 g of hot coffee at 90 °C with 50 g of cold water at 3 °C to bring down the temperature of the coffee. Explain
natka813 [3]

The average kinetic energy of the molecules of the coffee will decrease and the speed of the individual molecules will also reduce.

<h3>Temperature of resultant mixture</h3>

The temperature of the resultant mixture will be higher than the cold water temperature and lower than the hot coffee temperature.

Based on the decrease of the resulting temperature (equilibrium temperature) of the mixture, the average kinetic energy of the molecules of the coffee will decrease and the speed of the individual molecules of the hot coffee mixture will reduce, leading to a resultant cold mixture of coffee.

Learn more about kinetic molecular model here: brainly.com/question/2901837

3 0
2 years ago
An electron moves a 2.0x10^6 meter per the second perpendicular to a magnetic field having a flux density of 2 teslas. What is t
Darina [25.2K]

Answer:

F_B = 6.4*10^-13 N

Explanation:

The magnetic force on the electron, generated by the motion of the electron and the magnetic field is given by:

F_B=qv\ X\ B

q: electron charge = 1.6*10^{-19}C

v: speed of the electron = 2.0*10^6 m/s

B: magnitude of the magnetic field = 2T

However, the direction of B and v are perpendicular between them. So, the angle between vectors is 90°. The magnitude of the magnetic force is:

|F_B|=qvBsin90\°=qvB

You replace the values of q, v and B in the last equation:

|F_B|=(1.6*10^{-19}C)(2.0*10^6m/s)(2T)\\\\|F_B|=6.4*10^{-13}\ N

hence, the magnetic force on the electron is 6.4*10^-23 N

6 0
3 years ago
A 120.00 resistor, a 60.00 resistor, and a 40.00 resistor are connected in parallel and placed across a 12.0-V battery. What
Svet_ta [14]

Answer:

C

Explanation:

3 0
2 years ago
A NFL linebacker runs the 100m sprint in 12s. What is his final velocity?
zaharov [31]

Answer:

Final velocity of NFL line backer is 16.67 m/s.

Explanation:

From the question, we have following data about the NFL line backer:

Initial Speed of line backer = Vi = 0 m/s (Since, he starts from rest)

Distance covered by NFL line backer = s = 100 m

Time taken by the NFL line backer to complete 100 m sprint = t = 12 s

Acceleration of NFL line backer during sprint = a

Final Velocity of NFL line backer = Vf = ?

First we need to find the acceleration of the NFL line backer. For that purpose we will use 2nd equation of motion:

s = (Vi)(t) + (0.5)at²

using values:

100 m = (0 m/s)(12 s) + (0.5)(a)(12 s)²

100 m/72 s² = a

a = 1.39 m/s²

Now, we use 1st equation of motion to find Vf:

Vf = Vi + at

Vf = 0 m/s + (1.39 m/s²)(12 s)

<u>Vf = 16.67 m/s</u>

7 0
3 years ago
Other questions:
  • Which of the following criteria can help Linda classify gases as greenhouse gases? gas molecules having three or more atoms gas
    6·2 answers
  • PLEASE HELP, evaporation,liquids,solids, and gases involved
    9·1 answer
  • Suppose a skydiver (mass = 80kg) is falling toward the Earth. Calculate the skydiver’s gravitational potential energy at a point
    12·2 answers
  • Two objects are electrically charged. The net charge on one object is doubled. Therefore, the electric force _____.
    15·2 answers
  • A man walking on a tightrope carries a long a pole which has heavy items attached to the two ends. If he were to walk the tight-
    6·1 answer
  • I can raise a bucket of cement mix of mass 12kg through a vertical height of 8m in 10 seconds.Calculate the average power used i
    5·1 answer
  • Which term describes the number of thoughs that pass a point in a given amount of time
    10·1 answer
  • The term big bang nucleosynthesis refers to the formation during the big
    6·1 answer
  • Can someone answer all three of theses plzzzzzzzzzzz
    11·1 answer
  • (AKS 3al) Which graph best represents a moving object in a state of equilibrium
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!