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
Natasha_Volkova [10]
3 years ago
13

the height of seven falls in colorado is 5/2 the height of twin falls in idahi. the sum of the two heights is 420 ft. find the h

eight of each.
Physics
1 answer:
Masja [62]3 years ago
6 0
Let height of twin falls = x
height of seven falls = 2.5x

x + 2.5x = 420
3.5x = 420
x = 420/3.5 = 120

so twin falls = x = 120 ft
seven falls = 2.5x = 300 ft
You might be interested in
How does kinetic energy affect the stopping distance of a small vehicle compared to a large vehicle?
Zarrin [17]
<span>The kinetic energy is the work done by the object due to its motion. It is represented by the formula of the half the velocity squared multiply by the mass of the object. In this problem, you have two  vehicles, the other one is large and the other one is small. Let us assume that they travel with the same velocity. Note that the kinetic energy is proportional to the mass of the object. So when you increase the mass of the other, it also increases the kinetic energy of that object. The same holds true for the two vehicles. The larger the vehicle, its kinetic energy is also large and therefore its stopping distance will be longer than that of the smaller vehicle.</span>
8 0
3 years ago
Which factor has the greatest effect on the strength of an electromagnet?
irakobra [83]

B. The number of coils of wire around the core

6 0
2 years ago
Read 2 more answers
What happens if you add additional,solid NaCl after the maximum has been reached?
azamat
<span>it would bond to the phosphate 

</span>
3 0
3 years ago
Read 2 more answers
Which process best describes part of a scientific investigation?
lara31 [8.8K]

the answer is c because it is the 3rd step in the scientific analysis steps

5 0
3 years ago
Read 2 more answers
A ball is thrown up at a speed of 20 m/s.
ioda

Given:

(Initial velocity)u=20 m/s

At the maximum height the final velocity of the ball is 0.

Also since it is a free falling object the acceleration acting on the ball is due to gravity g.

Thus a=- 9.8 m/s^2

Now consider the equation

v^2-u^2= 2as

Where v is the final velocity which is measured in m/s

Where u is the initial velocity which is measured in m/s

a is the acceleration due to gravity measured in m/s^2

s is the displacement of the ball in this case it is the maximum height attained by the ball which is measured in m.

Substituting the given values in the above formula we get

0-(20x20)= 2 x- 9.8 x s

s= 400/19.6= 20.41m

Thus the maximum height attained is 20.41 m by the ball

6 0
3 years ago
Other questions:
  • An object that has the ability to do work has __________ energy. (4 points)
    12·2 answers
  • Air resistance is a type of friction true or false
    15·2 answers
  • A population has a birthrate of 10/1000 , a death rate of 9/1000, an immigration rate of 3/1000, and an emigration rate of 7/100
    5·1 answer
  • A spacecraft built in the shape of a sphere moves past an observer on the Earth with a speed of 0.500c. What shape does the obse
    13·1 answer
  • Development is best described as:
    7·1 answer
  • Write a five paragraph essay discussing the creation of the National Aeronautics and Space Administration, NASA. Compare it to o
    7·1 answer
  • How can cars be made to be more fuel efficient?
    5·1 answer
  • My best friend just returned from the clinic. She just found out she is HIV- positive. She invited me for dinner. What should I
    13·1 answer
  • What are ferrous and non ferrous metals<br> ​
    5·2 answers
  • Light hits ocean during ​
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!