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
Marianna [84]
2 years ago
10

An object has a mass of 12.8 kg and a velocity of 8.4 m/s. what is the kinetic energy of the object?

Physics
1 answer:
xenn [34]2 years ago
4 0
Kinetic energy = 1/2 * mass * velocity^2
KE = 1/2*m*v^2

Given m = 12.8 kg, v = 8.4 m/s;

KE = 1/2(12.8)(8.4)^2
KE = 451.58 J
KE = 452 J

You might be interested in
What do it mean by the value of gravitational constant is 6.67×10^-11Nm^2/kg^2<br>​
luda_lava [24]

Answer:

gravitational constant value means it was never change in any particular area of the Earth

8 0
1 year ago
Post WWII Germany was divided into four zones with the Americans occupying one zone and all of the following countries occupying
maxonik [38]

Answer:

b. Italy

Explanation:

Italy had sided with germany and lost in world war 2

After the Potsdam conference, Germany was divided into four occupied zones: Great Britain in the northwest, France in the southwest, the United States in the south and the Soviet Union in the east.

europeuncedu

3 0
1 year ago
a car initially at 65.00 m/s accelerates at 22.39 m/s^2. How far has the car traveled before it comes to a stop
Gennadij [26K]

Answer:

94.35 meter

Step by step explanation

7 0
2 years ago
lanet R47A is a spherical planet where the gravitational acceleration on the surface is 3.45 m/s2. A satellite orbitsPlanet R47A
qaws [65]

2.6×10^6\:\text{m}

Explanation:

The acceleration due to gravity g is defined as

g = G\dfrac{M}{R^2}

and solving for R, we find that

R = \sqrt{\dfrac{GM}{g}}\:\:\:\:\:\:\:(1)

We need the mass M of the planet first and we can do that by noting that the centripetal acceleration F_c experienced by the satellite is equal to the gravitational force F_G or

F_c = F_G \Rightarrow m\dfrac{v^2}{r} = G\dfrac{mM}{r^2}\:\:\:\:\:(2)

The orbital velocity <em>v</em> is the velocity of the satellite around the planet defined as

v = \dfrac{2\pi r}{T}

where <em>r</em><em> </em>is the radius of the satellite's orbit in meters and <em>T</em> is the period or the time it takes for the satellite to circle the planet in seconds. We can then rewrite Eqn(2) as

\dfrac{4\pi^2 r}{T^2} = G\dfrac{M}{r^2}

Solving for <em>M</em>, we get

M = \dfrac{4\pi^2 r^3}{GT^2}

Putting this expression back into Eqn(1), we get

R = \sqrt{\dfrac{G}{g}\left(\dfrac{4\pi^2 r^3}{GT^2}\right)}

\:\:\:\:=\dfrac{2\pi}{T}\sqrt{\dfrac{r^3}{g}}

\:\:\:\:=\dfrac{2\pi}{(1.44×10^4\:\text{s})}\sqrt{\dfrac{(5×10^6\:\text{m})^3}{(3.45\:\text{m/s}^2)}}

\:\:\:\:= 2.6×10^6\:\text{m}

5 0
2 years ago
How many pets do you have???!!!??
jasenka [17]

Answer:

Right now I have three.

Explanation: Thanks for the points luv ^-^.

5 0
3 years ago
Read 2 more answers
Other questions:
  • The irreversible thermite reaction (Fe2O3 + 2 Al --&gt; 2 Fe + Al2O3) is highly exothermic, changing the temperature by over 100
    12·1 answer
  • Tectonic plates are large segments of the Earth's crust that move slowly. Suppose that one such plate has an average speed of 4.
    14·1 answer
  • A train travels 4,000,000 m from New York to Los Angeles and takes about 42 hours to make the entire trip. What is its speed in
    15·1 answer
  • Question 2 please need help physics
    10·1 answer
  • A uniformly charged rod of length L = 1.3 m lies along the x-axis with its right end at the origin. The rod has a total charge o
    11·1 answer
  • A cubic meter (m³) is ______ a cubic centimeter (cm³).
    13·1 answer
  • Two objects, Object A and Object B, need to be identified. Object A's index of refraction is determined to be 1.77, and Object B
    7·2 answers
  • Which of the following situations describes a change that will result in a new kind of matter with different characteristics?
    11·1 answer
  • If we made a model with our solar system the size of an Oreo cookie, what would be the largest object that would fit inside your
    11·1 answer
  • I'm confused! Please help me if you can!
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!