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
klasskru [66]
3 years ago
11

A block of mass 2.95 kg is placed against a horizontal spring of constant k = 820 N/m and pushed so the spring compresses by 0.0

800 m. (a) What is the spring potential energy of the block-spring system? 2.624 Correct: Your answer is correct. J (b) If the block is now released and the surface is frictionless, calculate the block's speed after leaving the spring.
Physics
1 answer:
ad-work [718]3 years ago
7 0

Answer:

(a) 2.624

(b) 1.334

Explanation:

The given data in the question is:

Mass = 2.95 kg

Spring constant "k" = 820 N/m

Compression of Spring "x" = 0.0800m

Using this data and the equation to find the answer for spring potential energy:

spring potential energy = 1/2 kx²

= 1/2 (820 N/m)(0.0800m)²

= 2.624 Joules

(b) - It is given that the surface is friction-less which means no loss of energy during the motion of spring. This means that all the potential energy possessed by the spring converts to Kinetic Energy of the block. We can equate spring potential energy with Kinetic energy to find the block's speed as below:

Kinetic Energy = 1/2mv² where "m" is mass and "v" is velocity of the object

1/2mv² =  spring potential energy (found in part "a" above)

1/2(2.95 kg)v² = 2.624 Joules

v² = (2.624 x 2) / 2.95

v² = 1.779

v = √1.779

v = 1.334 m/s

You might be interested in
What are two ways you can increase power by climbing the stairs?
Nina [5.8K]

Answer:

change the

  • time
  • distance
  • force.

Explanation:

P = W/time

W = F*d

You have control over how fast you go up the stairs.

You also have control over how far up the stairs you go.

Therefore the answer is

  • time
  • distance

If you don't like distance as an answer, you can carry something up the stairs -- anything that increases F will do.

8 0
3 years ago
16 to 19 year old male and females are how much more likely to be involved in a crash?
Sedbober [7]
I say around 40% - 60%

https://www.dmv.ca.gov/portal/dmv/detail/teenweb/more_btn6/traffic/traffic
http://www.teendriversource.org/stats/support_teens/detail/57
http://www.rmiia.org/auto/teens/Teen_Driving_Statistics.asp

(I just corrected the question. Sorry if it is still incorrect.)
6 0
3 years ago
Which property do metalloids share with nonmetals
laiz [17]
Metalloids are all solid at room temperature. Some metalloids, such as silicon and germanium, can act as electrical conductors under the right conditions, thus they are called semi-conductors. Silicon for example appears lustrous, but is not malleable or ductile (it is brittle - a characteristic of some nonmetals).

Read more on Brainly.com - brainly.com/question/6662487#readmore

Hope that helped!

:)
7 0
3 years ago
Read 2 more answers
Does an increase in velocity necessarily mean an increase in acceleration?
Vinil7 [7]
We know, acceleration = final velocity - initial velocity / time
Here, if velocity is increasing, then, 
Final velocity > initial velocity, in that case, acceleration is also increasing, as it is directly proportional to velocity

In short, Your Answer would be "Yes"

Hope this helps!
3 0
3 years ago
Read 2 more answers
A student uses the right-hand rule as shown.
m_a_m_a [10]

Answer: O:right

Explanation: In this case you place your finger on the current, and your fingers should curl showing the way, you must use your right hand in this case, otherwise that would mean the fingers on your left would bend way back, and snap off, (Not really lol,  just saying)

5 0
2 years ago
Other questions:
  • [9]
    10·1 answer
  • In a young's double-slit experiment, the angle that locates the second dark fringe on either side of the central bright fringe i
    6·1 answer
  • How does the range of the pumpkin change if its initial velocity is tripled (keeping the angle fixed and less than 90∘)? How doe
    12·1 answer
  • What does it mean to have a good experimental design?​
    6·1 answer
  • Two tuning forks are played at the same time. One has a frequency of 176 Hz and the other is 178 Hz. How many beats per second a
    7·1 answer
  • How are molecules in a neutral state different from ions?
    6·2 answers
  • True or false an hypothesis is a statement that describes how to measure a particular variable or define a particular term
    11·1 answer
  • A rower in a boat pushes the water using an oar.
    12·2 answers
  • Actiong-reaction of the bat hits the ball.
    10·1 answer
  • a new planet is found with a density one third as much at earth and a radius twice that of earth. what is the acceleration due t
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!