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
saveliy_v [14]
3 years ago
13

A stretched spring has an elastic potential energy of 35 J when it is stretched 0.54 m. What is the spring constant of the sprin

g? Round your answer to two significant figures.
StartFraction N over m EndFraction
Chemistry
1 answer:
Varvara68 [4.7K]3 years ago
6 0

Answer:

240 N/m

Explanation:

Using the formula as follows:

U = ½kx²

Where;

U = elastic potential energy (J)

K = spring constant (N/m)

x = stretched displacement (m)

According to the information provided in this question,

U = 35J

x = 0.54m

k = ?

U = ½kx²

35 = ½ × k × 0.54²

35 = ½ × k × 0.2916

35 = 0.2916k/2

70 = 0.2916k

k = 70 ÷ 0.2916

k = 240.05

To 2s.f, the spring constant (k) = 240 N/m.

You might be interested in
If there is no net force on an object, then the object will
user100 [1]
If there is no net force on an object, then the object will <span>maintain it's rate of speed. Basically, net force is the change in an object's motion. If it is stationary and not moving, the object will stay stationary. If the object is moving at a rate of 2 miles per hour, it will constantly continue to move 2 mph because there is no net force.</span>
6 0
2 years ago
5 of 10
Roman55 [17]

Answer:

Peer review is a quality control measure for medical research. It

is a process in which professionals review each other's work to

make sure that it is accurate, relevant, and significant. Scientific

researchers aim to improve medical knowledge and find better

ways to treat disease.

if I am right mark the answer as brainliest

6 0
1 year ago
Read 2 more answers
An iron smoothing out the wrinkles in pants ? CONVECTION,RADIATION,CONDUCTION?
nexus9112 [7]

Answer:

Conduction i think-

3 0
2 years ago
Read 2 more answers
Caffeine has the molecular formula, C8H10N4O2. What is the percent composition of caffeine?
Debora [2.8K]

Answer:

b) 49.48% C, 5.19% H, 28.85% N, and 16.48% O

Explanation:

we find the mass for each element in one mole by multiplying the number of atoms in one molecule with the atomic mass

mC=8Ac=8*12=96g

mH=10AH=10*1=10g

mN=4AN=4*14=56g

mO=2AO=2*16=32g

by adding the masses together we find the molar mass of the molecule

M=mC+nH+mN+mO=96+10+56+32=194g/mole

we apply the rule of threes to find the percentage of each element

194g..96gC..10gH...56gN....32gO

100g....a...........b...........c.............d

a=(100*96)/194=49.48%C

b=(100*10)/194=5.19%H

c=(100*56)/194=28.85%N

d=(100*32)/194=16.48%O

3 0
3 years ago
1. What do producers do, and what is another name for them?
Neko [114]

Producers are the foundation of every food web in every ecosystem—they occupy what is called the first tropic level of the food web. The second trophic level consists of primary consumers—the herbivores, or animals that eat plants. At the top level are secondary consumers—the carnivores and omnivores who eat the primary consumers. Ultimately, decomposers break down dead organisms, returning vital nutrients to the soil, and restarting the cycle. Another name for producers is autotrophs, which means “self-nourishers.” There are two kinds of autotrophs. The most common are photoautotrophs—producers that carry out photosynthesis. Trees, grasses, and shrubs are the most important terrestrial photoautotrophs.  In most aquatic ecosystems, including lakes and oceans, algae are the most important photoautotrophs.

8 0
2 years ago
Other questions:
  • How many moles are in 9.25 x 10^58 atoms of copper
    7·1 answer
  • 1.)Which is the correct order of the organization of the human body?
    8·2 answers
  • What two factors affect the strength of gravitational force
    9·1 answer
  • How many moles of nitric acid are present in 35.0 ml of a 2.20 M solution?
    11·1 answer
  • (1) How did Democritus characterize atoms?
    9·1 answer
  • Which layers of the earths are common to both the compostitional and mechanical descriptions
    8·1 answer
  • A Punnett square is used to _______.
    5·2 answers
  • How do I calculate the pOH of a Solution at 25℃ with a [OH-1] = 6.5 x 10-9 M and state whether the Solution is Acidic, Basic, or
    9·1 answer
  • Consider the following voltaic cell:(j) In which direction do anions within the salt bridge move to maintain charge neutrality?
    15·1 answer
  • WILL GIVE BRAINIEST ANSWER A chemical equation has different numbers of atoms on the left and right sides.
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!