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
Nesterboy [21]
3 years ago
7

You are loading a toy dart gun, which has two settings, the more powerful with the spring compressed twice as far as the lower s

etting. If it takes 5.0 J of work to compress the dart gun to the lower setting, how much work does it take for the higher setting?
A. 20 J
B. 10 J
C. 2.5 J
D. 40 J
Physics
1 answer:
Amiraneli [1.4K]3 years ago
4 0

Answer:

option A

Explanation:

given,

compression for lower setting = x

work done to compress in lower setting = 5 J

compression in higher setting, x' = 2 x

work done in higher setting = ?

Work done in compression of spring at lower setting

W = \dfrac{1}{2}kx^2

5 = \dfrac{1}{2}kx^2............(1)

Work done in compression of spring at higher setting

W' = \dfrac{1}{2}kx'^2

W'= \dfrac{1}{2}k(2x)^2

W'= 4\times \dfrac{1}{2}kx^2

W'= 4\times W

from equation (1)

W'= 4\times 5

    W' = 20 J

Work take for the higher setting is equal to 20 J

Hence, the correct answer is option A

You might be interested in
One relationship between organisms is that of predator-prey. Which of the following is the best description of a predator?
GrogVix [38]
An organism that eats another organism. 

Predators hunt, and eat their prey. 
7 0
3 years ago
Read 2 more answers
14. measuring cylinder containing some water stands on a scale pan. A solid ball is lowered into the water. The water level rise
Basile [38]

Answer:

Let d be the density of fluid.

So , Initial reading of balance, F1 =30dg N

After the level reaches 50cm^3

Final reading of balance , F2 =50dg N

Given that difference between final and initial reading is 30g

i.e, F2 −F1

=30 g

⟹50dg−30dg=30g

⟹20dg=30g

⟹d=30g/20g

⟹d=1.5g/cm^3

So, density of fluid is 1.5g/cm^3

8 0
3 years ago
A particle with charge 3.20×10−19 c is placed on the x axis in a region where the electric potential due to other charges increa
lys-0071 [83]

Answer:

-5 V

Explanation:

The charged particle (which is positively charged) moves from point A to B, and its kinetic energy increases: it means that the particle is following the direction of the field, so its potential energy is decreasing (because it's been converted into potential energy), therefore it is moving from a point at higher potential (A) to a point at lower potential (B). This means that the value

vb−va

is negative.

We can calculate the potential difference between the two points by using the law of conservation of energy:

\Delta K+ \Delta U=0\\\Delta K + q\Delta V=0

where:

\Delta K=+1.6\cdot 10^{-18} J is the change in kinetic energy of the particle

q=3.2\cdot 10^{-19} C is the charge of the particle

\Delta V =V_b-V_a is the potential difference

Re-arranging the equation, we can find the value of the potential difference:

\Delta V=V_b-V_a = -\frac{\Delta K}{q}=-\frac{1.6\cdot 10^{-18} J}{3.2\cdot 10^{-19} C}=-5 V

8 0
3 years ago
Which of the following statement describes a nonpolar molecule
Sati [7]

Answer:

?

Explanation:

what are the statements

5 0
2 years ago
Read 2 more answers
A wheelbarrow is a good example of a second-class lever. True or False
olganol [36]

Answer:

true

Explanation:

a wheelbarrow has its load situated between the fulcrum and the force the wheel Barrow is 2nd class because of its resistance between the force and the axis

3 0
3 years ago
Other questions:
  • How do weathering and erosion differ?
    6·2 answers
  • What are some things cyclists do to reduce friction?
    8·1 answer
  • 1 point
    15·1 answer
  • A 5.0-kg crate is on an incline that makes an angle 30° with the horizontal. If the coefficient of static friction is 0.5, what
    11·1 answer
  • A baseball player throws a baseball with a velocity of 13 m/s North it is caught by a second player seven seconds later how far
    15·1 answer
  • The mass of an electron is 9.11×10−31 kg. If the de broglie wavelength for an electron in a hydrogen atom is 3.31×10−10 m
    14·1 answer
  • 20 points please helppp me I’m begging u this is due soon please come on ????? Anyone
    6·2 answers
  • Please help me, i beg you.
    6·1 answer
  • 5. In which image below is the most work being wasted as heat?
    8·1 answer
  • draw an arrow from each box to the correct part of the photo then tell your reason for each choice in your boxes
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!