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
Artyom0805 [142]
3 years ago
13

At what speed does a 1400 compact car have the same kinetic energy as a 20000 truck going 25 ?

Physics
1 answer:
kumpel [21]3 years ago
4 0
K=1400*V^2/2
K=20000*25^2/2. => 1400*V^2/2=20000*25^2/2 <=> 1400*V^2=20000*25^2
14*V^2=200*225
v^2=100*225/7
v=250/7^(1/2)

Answer: 250*7^(1/2)/7
You might be interested in
An oil slick on water is 120 nm thick and illuminated by white light incident perpendicular to its surface. What color does the
gregori [183]

Answer:

\lambda = 672 nm

so this is nearly red colour light

Explanation:

As we know that the interference of light from reflected light then the path difference is given as

\Delta x = 2\mu t + \frac{\lambda}{2}

now we know that for constructive interference of light the path difference is given as

\Delta x = n\lambda

so we will have

2\mu t + \frac{\lambda}{2} = N\lambda

so we will have

4\mu t = \lambda

\lambda = 2(1.40)(120nm)

\lambda = 672 nm

so this is nearly red colour light

8 0
3 years ago
As streams flow through Stone Mountain, layers of sand build up. Over time, the sand particles form a sedimentary rock called sa
Firlakuza [10]

As streams flow through Stone Mountain, layers of sand build up. Over time, the sand particles form a sedimentary rock called sandstone. What causes sandstone to change into metamorphic rock at Stone Mountain? Sandstone experiences intense heat and pressure.

(Correct Answer is above)

Also Mark Brainliest please.

3 0
3 years ago
Read 2 more answers
An infinitely long straight wire has a uniform linear charge density of Derive the 4. equation for the electric field a distance
marshall27 [118]

Answer:

E = \frac{\lambda}{2\pi \epsilon_0 r}

Explanation:

Let the linear charge density of the charged wire is given as

\frac{q}{L} = \lambda

here we can use Gauss law to find the electric field at a distance r from wire

so here we will assume a Gaussian surface of cylinder shape around the wire

so we have

\int E. dA = \frac{q}{\epsilon_0}

here we have

E \int dA = \frac{\lambda L}{\epsilon_0}

E. 2\pi r L = \frac{\lambda L}{\epsilon_0}

so we have

E = \frac{\lambda}{2\pi \epsilon_0 r}

4 0
3 years ago
ATTENTION! I NEED THIS DONE ASAP NO LINKS !!!<br> THIS IS A SCIENCE QUESTION
nata0808 [166]

Answer:

Science seeks to broaden our knowledge base, while engineering designs solutions and problems.

Explanation:

4 0
3 years ago
50 points physics question (multiple choice) Will give brainliest!
Basile [38]

There are two systems that contain only the fundamental frequency and they are the systems C and D.

<h3>What is fundamental frequency?</h3>

The term fundamental frequency refers to the lowest frequency of a vibrating body. It does not include the overtones or the harmonics.

From the image shown in the question, there are two systems that contain only the fundamental frequency and they are the systems C and D.

Learn more about fundamental frequency:brainly.com/question/9424813

#SPJ1

5 0
1 year ago
Other questions:
  • Two identical cylinders contain the same gas. IfA contains three times as much gasas B, which cylinder has the higherpressure?1.
    15·1 answer
  • In a container of negligible heat capacity, mix 6kg of ice at -40 ° C with 3kg of steam at 120 ° C, determine the equilibrium te
    5·1 answer
  • A one-piece cylinder has a core section protruding from the larger drum and is free to rotate around its central axis. A rope wr
    9·1 answer
  • A boat crosses a river of width 161 m in which the current has a uniform speed of 1.09 m/s. The pilot maintains a bearing (i.e.,
    13·1 answer
  • A bolt is dropped from a bridge under construction, falling 94 m to the valley below the bridge. (a) how much time does it take
    5·1 answer
  • All of the following objects are moving at the same speed. which one bas the greatest kinetic energy? (remember kinetic energy d
    8·1 answer
  • What is the magnitude of the torque about his shoulder if he holds his arm straight out to his side, parallel to the floor
    10·1 answer
  • What is potential energy
    14·2 answers
  • Consider an alien on a planet with an acceleration of gravity equal to 20 m/sec^2. If the alien's mass is 10 kg, how much does t
    13·1 answer
  • Is ironing clothes conduction, convection, or radiation?
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!