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
Cloud [144]
3 years ago
14

Can you plz help me in on 11 12 and 14?

Physics
1 answer:
anygoal [31]3 years ago
3 0
I’m pretty sure 14 is mutations
You might be interested in
If a car changes its velocity from 32 km/hr to 54 km/hr in 8.0 seconds, what is its acceleration?
Stella [2.4K]
Use the equation for the acceleration
A = final velocity - initial velocity divided by time final - time initial
A= 54 - 32 / 8 - 0
A= 22 / 8 
A= 2.75 m/s^2 
Hope this helps!
3 0
3 years ago
Read 2 more answers
Using the picture above, which ball has the greatest potential energy?
weqwewe [10]
Ball 4 because the higher the elevation is the greater the potential energy it has
4 0
2 years ago
Please help me find the answer ​
Hoochie [10]

Answer:

26b) 66.7%

27) 500 N

Explanation:

26.a) In a two pulley system, the load is attached to one of the pulleys.  The other pulley is attached to a fixed surface, as well as one end of the rope.  The other end of the rope goes around moving pulley, then around the fixed pulley.

26.b) Mechanical advantage is the ratio between the forces:

MA = load force / effort force

Efficiency is the ratio between the work:

e = work done on load / work done by effort

Work is force times distance.

e = (F load × d load) / (F effort × d effort)

Rearranging:

e = (F load / F effort) × (d load / d effort)

e = MA × (d load / d effort)

In a two pulley system, the load moves half the distance of the effort.  So the efficiency is:

e = (4/3) × (1/2)

e = 2/3

e = 66.7%

27) In a three pulley system, the load moves a third of the distance of the effort.

e = (F load / F effort) × (d load / d effort)

0.40 = (600 N / F) × (1/3)

F = 500 N

8 0
3 years ago
An object is 3.0 cm from a concave mirror, with a focal length of 1.5 cm. Calculate the image distance. Remember to include your
Sunny_sXe [5.5K]

Answer:

Construct a quadrilateral ABCD, where

Construct a quadrilateral ABCD, whereAB = 4 cm, BC = 5 cm, CD = 6.5 cm and angle B = 105° and angle C = 80°

7 0
3 years ago
What are the two factors that affect the frictional force between two surfaces?
pishuonlain [190]

Answer:

The amount of force and the angle between them.

Explanation:

6 0
2 years ago
Other questions:
  • What is the science behind the making of pop-up books?
    11·1 answer
  • Is it possible for several scientists who have never met each other to contribute to the same scientific knowledge, theory, or l
    6·2 answers
  • Can anyone give me the description of the element mercury is positioned on the periodic table of elements and a list of other el
    15·1 answer
  • Which type of energy is commonly referred to as kinetic energy?
    7·2 answers
  • A boy reaches out of a window and tosses a ball straight up with a speed of 10 m/s. The ball is 20 m above the ground as he rele
    9·1 answer
  • HELPPP. PHYSICAL SCIENCE MECHANICAL ENERGY LAB
    13·1 answer
  • I NEED HELP ASAP
    15·2 answers
  • A stone tumbles into a mine shaft strikes bottom after falling for 3.8 seconds. How deep is the mine shaft
    11·1 answer
  • What is the necessary conditions for the production of sound?
    15·1 answer
  • The power of a lens is 4. 0 diopters and its diameter is 5. 0 cm. what is the focal length of this lens?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!