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
Gre4nikov [31]
3 years ago
12

Two carts connected by a 0.30 m spring hit a wall, compressing the spring to 0.20 m. The spring constant k is 50 N/m. What is th

e elastic potential energy stored from the spring's compression
Physics
1 answer:
suter [353]3 years ago
8 0

Answer:

Eelas = 0.25[J]

Explanation:

This problem can be solved using the principle of energy conservation, in this particular case related to elastic energy.

The elastic energy can be calculated by means of the following equation:

E_{elas}=0.5*k*x^2

where:

k = The spring constant is 50 [N/m]

x =  distance compressed  = 0.3 - 0.2 = 0.1 [m]

E_{elas}=0.5*50*(0.1)^{2} \\E_{elas}=0.25[J]

You might be interested in
To overcome an object's inertia, it must be acted upon by __________. A. gravity B. energy C. force D. acceleration
astra-53 [7]
In order to overcome an object’s inertia (resistance to change), it must be acted upon by an unbalanced force, so the answer to the problem is letter C.
7 0
3 years ago
Read 2 more answers
A car traveling with an initial velocity of 12 m/s accelerates at a constant rate of 2.2 m/s2 for a time of 4 seconds.
bazaltina [42]
So what's the question?
4 0
4 years ago
a 5.0 kg ball is dropped from a 2.5 m high window. what is the velocity of the ball just before it hits the ground?
julsineya [31]

Answer:

Approximately 7.0\; \rm m \cdot s^{-1}.

Assumption: the ball dropped with no initial velocity, and that the air resistance on this ball is negligible.

Explanation:

Assume the air resistance on the ball is negligible. Because of gravity, the ball should accelerate downwards at a constant g = 9.81 \; \rm m \cdot s^{-2} near the surface of the earth.

For an object that is accelerating constantly,

v^2 - u^2 = 2\, a \, x,

where

  • u is the initial velocity of the object,
  • v is the final velocity of the object.
  • a is its acceleration, and
  • x is its displacement.

In this case, x is the same as the change in the ball's height: x = 2.5\; \rm m. By assumption, this ball was dropped with no initial velocity. As a result, u = 0. Since the ball is accelerating due to gravity, a = 9.81\; \rm m \cdot s^{-2}.

v^2 - u^2 = 2\, g \cdot h.

In this case, v would be the velocity of the ball just before it hits the ground. Solve for

v^2 = 2\, a\, x + u^2.

\begin{aligned}v &= \sqrt{2\, a\, x + u^2} \\ &= \sqrt{2\times 9.81 \times 2.5 + 0} \\ &\approx 7.0\; \rm m\cdot s^{-1}\end{aligned}.

3 0
3 years ago
If a runner goes 500 meters with an average speed of 7.0 m/s. How long were they running?
ivann1987 [24]

Answer: s=d/t= 500/7.0=71.42 m/s

Explanation:

5 0
3 years ago
How are sky maps made?
r-ruslan [8.4K]
A star chart<span> or </span>star map<span> is a </span>map<span> of the night </span>sky <span>Astronomers divide these into grids to use them more easil They are used to identify and locate astronomical objects such as stars constellations and galaxie it is in my text book </span>
4 0
3 years ago
Read 2 more answers
Other questions:
  • Which of the following equations describe the 2nd law of motion?
    12·2 answers
  • How to solve the problem
    6·2 answers
  • Waves that move matter back and forth are called                 a.transverse waves  b.longitudinal wave     c. Medium wave
    10·2 answers
  • You have a spring with k = 640 N/m connected to a mass with m = 10 kg. You start the system oscillating and measure the velocity
    12·1 answer
  • An electric pump rated 1.5 KW lifts 200kg of water through a vertical height of 6m in 10 secs: way is the efficiency of the pump
    13·1 answer
  • The light reactions of photosynthesis supply the calvin cycle with __________.
    10·1 answer
  • All waves transfer____. Energy weight velocity mass
    9·1 answer
  • A satellite has a mass of 6463 kg and is in a circular orbit 4.82 × 105 m above the surface of a planet. The period of the orbit
    10·1 answer
  • The semi-major axis of this ellipse is 8.8 cm, and the distance from one of the foci to the
    11·1 answer
  • Question 5: A heavy rope is flicked upwards, creating a single pulse in the rope. Make a drawing of the rope and indicate the fo
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!