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
Nikolay [14]
2 years ago
14

Which dog has the most kinetic energy? A. A dog of mass 12 kg running with speed 6 m/s B. A dog of mass 10 kg running with speed

3 m/s C. A dog of mass 16 kg running with speed 5 m/s D. A dog of mass 14 kg running with speed 4 m/s​
Physics
1 answer:
Nonamiya [84]2 years ago
5 0

Answer:

A

Explanation:

KE = 1/2 m v^2

     the greatest is  A

You might be interested in
An air bubble released by a deep-water diver, 115 m below the surface of a lake, has a volume of 1.60 cm3. The surface of the la
Kryger [21]

Answer:

The value is  V_2 = 1.9396 *10^{-5} \  m^3

Explanation:

From the question we are told that

   The depth at which the bubble is released is  h = 115 \  m

    The volume of the air bubble is  V  =  1.60 cm^3 = 1.60 *10^{-6} \  m^3

Generally from the ideal gas law

     PV  =  nRT

Given that  n , R , T are constant we have that

    PV  =  constant

So    

    P_1 V_1=P_2 V_2

Here P_1 is the pressure of the bubble at the depth where it is released which i mathematically represented as

      P_1 = P_a + P

Here P_a  is the atmospheric pressure with value  P_a  =  101325 \  Pa

and   P is the pressure due to the depth which is mathematically represented as

       P = \rho *  g * h

So

       P = 1000 * 9.8*115

=>    P = 1127000\ Pa

Here  \rho is the density of pure water with value  \rho = 1000 \ kg/m^3

        g = 9.8 \  m/s^2

        V_1 is the volume of the bubble at the depth where it is released

        P_2 is the pressure of the bubble at the surface which is equivalent to the atmospheric temperature

        V_2 is the volume of the bubble at the surface

So

      V_2 = \frac{ P_1 * V_1}{ P_2}

=>    V_2 = \frac{(Pa+ P) * V_1}{P_a}

=>    V_2 = \frac{101325 + 1127000   * (1.60 *10^{-6})}{ 101325 }

=>    V_2 = 1.9396 *10^{-5} \  m^3

4 0
3 years ago
While sitting on the couch, I am pushing down on it and it is pushing up on me. Which of Newton's laws of motion is this demonst
ArbitrLikvidat [17]
The third law of motion. Every action has an equal and opposite reaction. You exert a force on it and it exerts it back.
7 0
3 years ago
Read 2 more answers
What is required for an electric charge to flow through a wire?
max2010maxim [7]
In order to persuade the electrons in the wire to flow, you need
a potential difference between the ends of the wire.  Then the
electrons will want to get away from the more-negative end and
go to the more-positive end.  If both ends of the wire are at the
same potential, then the electrons have no reason to go anywhere,
and they just stay where they are.

Choice-d says this.
5 0
3 years ago
Read 2 more answers
The motion of a particle along a straight line is described by the equation x=6+4t2 -t 4 , where x is in meter and t is in secon
Aleks [24]

Answer:

The position of the particle is 6m

The velocity of the particle is 16 m/s in negative direction

The acceleration of the object is -40 m/s²

Explanation:

Given;

motion of the particle along a straight line as x = 6 + 4t² - t⁴

The position of the object when t = 2s

x = 6 + 4(2)² - (2)⁴

x = 6 + 16 - 16

x = 6m

The velocity of the object when t = 2s

Velocity = dx/dt

dx/dt = 8t - 4t³

when t = 2s

Velocity = 8(2) - 4(2)³

Velocity = 16 - 32

Velocity = -16m/s

Velocity = 16 m/s (in negative direction)

The acceleration of the object when t = 2s

Acceleration = d²x/dt² = 8 - 12t²

Acceleration = 8 - 12 (2)²

Acceleration =  -40 m/s²

5 0
4 years ago
In Claudia’s investigations, she prefers to use DNA evidence whenever she can. Why is this MOST likely to be her preference?
IrinaVladis [17]
DNA evidence is the most concrete and reliable. It is far better than options and untrustworthy evidence.
6 0
3 years ago
Other questions:
  • A 400-g block of iron at 400°C is dropped into a calorimeter (of negligible heat capacity) containing 60 g of water at 30°C. How
    10·2 answers
  • (A) If an atom of uranium-238( U ) undergoes alpha decay, what daughter isotope is produced? (B) If this radioisotope from (A) t
    11·1 answer
  • Which of the following graphs best represents the relationship between the gravitational potential energy of a freely falling ob
    10·1 answer
  • Which factors affect heat transfer between a warm and a cool substance?
    11·1 answer
  • A beam of helium-3 atoms (m = 3.016 u) is incident on a target of nitrogen-14 atoms (m = 14.003 u) at rest. During the collision
    6·1 answer
  • How much is the tension number 2
    11·1 answer
  • Move the man steadily to the right towards the house. Describe his position. (Constant? Changing? Negative? Positive?)
    13·1 answer
  • What principle is the basis for expecting events to happen tomorrow the same as they happened today?
    12·1 answer
  • The magnetic field of a magnet is felt?
    15·1 answer
  • AWARDING BRAINLIEST
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!