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
stepan [7]
3 years ago
8

Suppose kinetic energy is 4 joules of a moving object what will happen if we increase the speed twice

Physics
1 answer:
Artyom0805 [142]3 years ago
3 0

Answer:

The kinetic energy is 16 joules.                        

Explanation:

Kinetic energy (E) is given by:

E = \frac{1}{2}mv^{2}

Where:

m: is the mass

v: is the speed

When the kinetic energy is 4 joules, the speed of the object is:

v_{1}^{2} = \frac{2E_{1}}{m} = \frac{8}{m}                         

Now, if the speed is increased twice then we have:

E_{2} = \frac{1}{2}mv_{2}^{2} = \frac{1}{2}m(2v_{1})^{2} = \frac{1}{2}m[4(\frac{8}{m})] = 16 J

Therefore, the kinetic energy is 4 times the initial value.  

I hope it helps you!                                

You might be interested in
HELP PLEASE<br> (Look at the picture)
kotykmax [81]

Answer:

what is that?

Explanation:

i dont know what us that sorry

3 0
3 years ago
(01.01 LC) Two boxes are 8 cm apart. Which of the following should Janet do to
Trava [24]
Place the boxes 10cm apart, if they are closer that concentrates the mass of the boxes more
4 0
3 years ago
Read 2 more answers
Jeff’s father is installing a do-it-yourself security system at his house. He needs to get a device from his workshop that conve
elena55 [62]

The answer is a buzzer. hope this helps. this is the answer because it use electricity to make the sound please award brainliest


7 0
3 years ago
Read 2 more answers
Assume the following values: d1 = 0.880 m , d2 = 1.11 m , d3 = 0.560 m , d4 = 2.08 m , F1 = 510 N , F2 = 306 N , F3 = 501 N , F4
dsp73

Answer:

= 2630.6 N.m

Explanation:

(FR)x = ΣFx = -F4 = -407 N

(FR)y = ΣFy =-F1-F2 -F3 = -510 - 306 - 501 = -1317 N

(MR)B =ΣM + Σ(±Fd)

= MA + F1(d1 +d2) + F2d2 - F4d3

= 1504 + 510(0.880+1.11) +306(1.11) - 407(0.560)

= 2630.64 N.m (counterclockwise)

6 0
3 years ago
What is the approximate wavelength of a light whose second-order dark band forms a diffraction angle of 15.0° when it passes thr
anzhelika [568]
414nm just took the test
7 0
3 years ago
Read 2 more answers
Other questions:
  • The earth is made mostly of metals and rocks. Where did this material come from? It was made by nuclear fission of uranium and o
    5·1 answer
  • What is the average velocity of a person walking to the store as
    5·2 answers
  • Wire A carries 4 A into a junction, wire B carries 5 A into the same junction, and another wire is connected to the junction. Wh
    12·1 answer
  • Allie is flying from New York to London. Her plane will most likely fly in the:
    6·2 answers
  • __________ was the first African American to earn a doctoral degree in psychology from a university in the US and is considered
    6·2 answers
  • A spring stretches 2.6 cm when a 7 g object is hung from it. The object is replaced with a block of mass 28 g which oscillates i
    14·1 answer
  • What is the difference between speed and velocity?
    14·1 answer
  • Mt. Everest is 20,028 feet high. How many miles is this? ( there are 5,280 feet in a mile)
    15·2 answers
  • Got it never mind. The only reason I'm typing more is to fill out the required space
    8·1 answer
  • How large a band of frequencies does each television broadcasting channel get ?
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!