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
strojnjashka [21]
3 years ago
15

A car is traveling 12m/s. It approaches a stop sign and decelerates at 4.0m/s squared. How long does it take the car to stop?

Physics
1 answer:
beks73 [17]3 years ago
8 0
It would take
12/4 = 3
that's 3 seconds ..
You might be interested in
Someone please help me!
kirill [66]

I think it’s the first one

4 0
3 years ago
If the jet is moving at a speed of 1300 km/h at the lowest point of the loop, determine the minimum radius of the circle so that
Natalka [10]

Answer:

R = 2216m and The normal force of the seat on the pilot is 5008N

Explanation:

See attachment below please.

5 0
3 years ago
I WILL MARK BRAINLIEST
Yuliya22 [10]
Sound waves require a medium. For example - think about space. there is no air or liquid because it is a vacuum, which is why sounds don’t travel through space.
4 0
3 years ago
An alpha particle (α), which is the same as a helium-4 nucleus, is momentarily at rest in a region of space occupied by an elec
vaieri [72.5K]

Answer:

Speed = 575 m/s

Mechanical energy is conserved in electrostatic, magnetic and gravitational forces.

Explanation:

Given :

Potential difference, U = $-3.45 \times 10^{-3} \ V$

Mass of the alpha particle, $m_{\alpha} = 6.68 \times 10^{-27} \ kg$

Charge of the alpha particle is, $q_{\alpha} = 3.20 \times 10^{-19} \ C$

So the potential difference for the alpha particle when it is accelerated through the potential difference is

$U=\Delta Vq_{\alpha}$

And the kinetic energy gained by the alpha particle is

$K.E. =\frac{1}{2}m_{\alpha}v_{\alpha}^2 $

From the law of conservation of energy, we get

$K.E. = U$

$\frac{1}{2}m_{\alpha}v_{\alpha}^2 = \Delta V q_{\alpha}$

$v_{\alpha} = \sqrt{\frac{2 \Delta V q_{\alpha}}{m_{\alpha}}}$

$v_{\alpha} = \sqrt{\frac{2(3.45 \times 10^{-3 })(3.2 \times 10^{-19})}{6.68 \times 10^{-27}}}$

$v_{\alpha} \approx 575 \ m/s$

The mechanical energy is conserved in the presence of the following conservative forces :

-- electrostatic forces

-- magnetic forces

-- gravitational forces

5 0
3 years ago
Air bubbles being released when breathing from the mouth
Inessa [10]

Answer:

air embolism

Explanation:

8 0
2 years ago
Other questions:
  • Substances whose atoms readily give up electrons are considered to be which of the following?
    11·1 answer
  • 2. Can you rearrange the equation F = kx to get k on one side of the equation
    15·1 answer
  • A merry-go-round starts from rest and reaches the angular speed of 4 rpm in the first two minutes. what would be the angular acc
    8·1 answer
  • A wave travels through a medium and displaces the particles perpendicular to the direction in which the wave is traveling. This
    10·2 answers
  • The slope of a distance time graph is equal to what
    10·1 answer
  • What occurs when the surface of a large body of water is heated by the sun and the water at the depths remains cool because of l
    10·2 answers
  • Which is true about the resistivities of a metal and a semiconductor as the temperature is increased?
    8·2 answers
  • The path in which one object travels around another object in space is called its A. rotation. B. orbit. C. revolution. D. gravi
    6·1 answer
  • g Two cars, car 1 and car 2 are traveling in opposite directions, car 1 with a magnitude of velocity v1=13.0 m/s and car 2 v2= 7
    5·1 answer
  • What is air??????????????
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!