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
san4es73 [151]
3 years ago
5

If an object has a kinetic energy of 30 j and mass of 34kg how fast is the object moving ?

Physics
1 answer:
cricket20 [7]3 years ago
3 0

Ek = (m*V^2) / 2 where m is mass and V is speed, then we can take this equation and manipulate it a little to isolate the speed.

Ek = mv^2 / 2 — multiply both sides by 2

2Ek = mv^2 — divide both sides by m

2Ek / m = V^2 — switch sides

V^2 = 2Ek / m — plug in values

V^2 = 2*30J / 34kg

V^2 = 60J/34kg

V^2 = 1.76 m/s — sqrt of both sides

V = sqrt(1.76)

V = 1.32m/s (roughly)

You might be interested in
a 60-kg skier starts at the top of a 10 meter slope. At the bottom, she is traveling 10 m/s. How much energy does she loose to f
Alex
She would lose <span> 2,880 Joules (J) of energy </span>
7 0
4 years ago
Read 2 more answers
Temperature is a measure of the average ____________ energy of an object's particles. light mechanical potential kinetic
Zielflug [23.3K]
Temperature is a measure of the average kinetic energy of the particles of a substance.
Hope this helps! :)
6 0
4 years ago
Read 2 more answers
3) Ęplain why muddy water is<br> Heterogeneous<br> mixture
nataly862011 [7]

Answer:

muddy water is a heterogeneous mixture, which is Suspension.

7 0
3 years ago
HELP PLEASE!!
sweet-ann [11.9K]

Answer:

C. More of the heat is transferred to the kinetic energy of the copper atoms than to the kinetic energy of the water molecules.

Explanation:

Both equal masses of water and copper were heated at the same temperature. Since copper is a good conductor of heat compared to water, its  absorbs more heat. Which in-turn increases the rate of vibrations of the atoms in the copper mass, thus increasing their kinetic energy.

In the case of water, its molecules displaces one another after being heated to a higher temperature compared to neighboring molecules. So that the heated molecule becomes less dense and floats to the surface of water.

This property of copper makes it to be heated to a higher final temperature than the water.

6 0
3 years ago
Name and state the rule to find out the direction of magnetic field inside and around the loop.
goldfiish [28.3K]

Answer:

The right hand rule states that: to determine the direction of the magnetic force on a positive moving charge, ƒ, point the thumb of the right hand in the direction of v, the fingers in the direction of B, and a perpendicular to the palm points in the direction of F.

Explanation:

5 0
3 years ago
Other questions:
  • Earth is the only source of gravity in the solar system. Do you agree?
    14·2 answers
  • A motorcycle cover a distance of 1.8 km in 5 minute. calculate its average velocity?​
    15·2 answers
  • When you're driving uphill,___________________.
    13·2 answers
  • If a bicyclist, with initial velocity of zero, steadily gained speed until reaching a final velocity of 26m/s, how far would she
    8·1 answer
  • A runner runs the 100 meter dash in 16.6 seconds. What is their average speed? (in meters per second) SOMEBODY PLEASE HELP ME!!!
    7·1 answer
  • A book is sitting on a desk. What best describes the normal force acting on the book?
    15·2 answers
  • Which of the following describes a sound wave?
    7·1 answer
  • What is calibration of thermometer?​
    10·1 answer
  • An Amtrak going 250m/s comes to a stop in 12s. What is the<br> acceleration?
    8·1 answer
  • The speed of sound is measured to be 336 m/s on a certain day. What is this measurement in kilometers per hour
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!