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
natima [27]
3 years ago
14

Felipe drives his car at a velocity of 28 m/s. He applies the brake, which slows the vehicle down at a rate of 6.4 m/s2 and caus

es it to slow to a stop. How long does it take for the car to stop? Round your answer to the nearest tenth.
I'm supposed to use derived formulas to find the answer but I don't know which one to use.

Physics
2 answers:
zysi [14]3 years ago
6 0
So after ~4.4 seconds, car will stop.

EastWind [94]3 years ago
6 0
The answer is: 4.4 seconds
You might be interested in
A planar electromagnetic wave is propagating in the +x direction. At a certain point P and at a given instant, the electric fiel
Free_Kalibri [48]

Answer:

B=2.74\times 10^{-10}\ T

Explanation:

It is given that,

A planar electromagnetic wave is propagating in the +x direction.The electric field at a certain point is, E = 0.082 V/m

We need to find the magnetic vector of the wave at the point P at that instant.

The relation between electric field and magnetic field is given by :

c=\dfrac{E}{B}

c is speed of light

B is magnetic field

B=\dfrac{E}{c}\\\\B=\dfrac{0.082}{3\times 10^8}\\\\B=2.74\times 10^{-10}\ T

So, the magnetic vector at point P at that instant is 2.74\times 10^{-10}\ T.

3 0
3 years ago
3. A train covers 168 km in 4 hours. How much distance will it cover in 80<br> minutes?
Kay [80]

Answer:

56km

Explanation:

168 ÷ 240 = 0.7

0.7 × 80 = 56km

240 is the amount of minutes in 4 hours.

We divided 168 by 240 to get the distance covered in 1 minute. Afterwards, we needed 80 minutes so we multiplied the answer by 80.

4 0
3 years ago
What causes some materials to have a magnetic fields?
Viktor [21]
Well it determines on how much  magnetism a material has.
6 0
3 years ago
Read 2 more answers
An ideal transformer has 60 turns in its primary coil and 360 turns in its secondary coil. If the input rms voltage for the 60-t
notka56 [123]

Answer:

720 V

Explanation:

Given that,

The number of turns in primary coil, N₁ = 60

The number of turns in secondary coil, N₂ = 360

The input rms voltage, V₁ = 120 V

We need to find the output rms voltage of the secondary coil . The relation between number of turns in primary coil - secondary coil to the input rms voltage to the output rms voltage is given by :

\dfrac{N_1}{N_2}=\dfrac{V_1}{V_2}\\\\V_2=\dfrac{N_2V_1}{N_2}\\\\V_2=\dfrac{360\times 120}{60}\\\\V_2=720\ V

<h3>So, the output rms voltage of the secondary coil is 720 V. Hence, the correct option is (b).</h3>
7 0
2 years ago
A circuit consists of resistors 170 Ω, 240 Ω, and 65 Ω connected in series with a 12-V battery. What is the voltage across resis
Lyrx [107]

Answer:

khgfdsdfghjhnbvcxzxcvbn

Explanation:

5 0
3 years ago
Other questions:
  • A laser pulse takes 2.56 seconds to travel from Earth to the Moon and return. Use this to calculate how far away the Moon is. Ho
    14·1 answer
  • For life to flourish on Earth, several changes occurred that affected the atmosphere, such as _____.
    14·1 answer
  • How come when an object has a greater mass, it has a greater Inertia? and the other way around.
    9·1 answer
  • Please help. :( I am horrendously bad at Physics...
    13·1 answer
  • Which of the following stars is likely to be the coldest? Select one: a. The white-colored star b. The orange-colored star c. Th
    5·2 answers
  • What is the maximum speed (in units of m/s) with which a car can round a
    10·1 answer
  • A ball with a mass of 3.1 kg is moving in a uniform circular motion upon a horizontal surface. The ball is attached at the cente
    8·1 answer
  • When a rocket lifts off what provides the momentum match of the upper lift
    6·1 answer
  • LiNos<br> what is the moler mass
    10·1 answer
  • How do unbalanced forces acting on an object affect its motion when the object is at rest? What if it is moving?
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!