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
konstantin123 [22]
3 years ago
11

The owners want the speed at the bottom of the first hill doubled. How much higher must the first hill be built?

Physics
1 answer:
Sonja [21]3 years ago
3 0
Neglecting friction and air resistance, the first hill must be built 4 times higher than it is now.
You might be interested in
A shuttle on Earth has a mass of 4.5 E 5 kg. Compare its weight on Earth to its weight while in orbit at a height of 6.3 E 5 met
faltersainse [42]

Answer:

83%

Explanation:

On the surface, the weight is:

W = GMm / R²

where G is the gravitational constant, M is the mass of the Earth, m is the mass of the shuttle, and R is the radius of the Earth.

In orbit, the weight is:

w = GMm / (R+h)²

where h is the height of the shuttle above the surface of the Earth.

The ratio is:

w/W = R² / (R+h)²

w/W = (R / (R+h))²

Given that R = 6.4×10⁶ m and h = 6.3×10⁵ m:

w/W = (6.4×10⁶ / 7.03×10⁶)²

w/W = 0.83

The shuttle in orbit retains 83% of its weight on Earth.

4 0
3 years ago
What is the use of an inclined plane​
loris [4]

Answer:

Hey there!

Inclined planes are used to lift heavy objects to higher places.

Hope this helps :)

5 0
3 years ago
Read 2 more answers
Waves disturb ____, but do not transmit it
Agata [3.3K]

Answer:

energy

Explanation:

im sure

5 0
3 years ago
Lus
patriot [66]

Answer:

hey but the person at the top is right

7 0
3 years ago
A car accelerates from rest at a constant rate 5m/s^2. Which of the following statements is true
dusya [7]

Answer:

jjhbkvjuhigjgyihbgtimnvyuoibc

8 0
3 years ago
Other questions:
  • If an apprentice makes 55% of Journeyman wages, what would an apprentice make per hour if the Journeyman scale is $17.64?
    5·1 answer
  • If we're interested in knowing the rate at which light energy is recieved by a unit of area on a particular surface, we're reall
    15·2 answers
  • Calculate the acceleration if you push with a 20-N horizontal force on a 2-kg block on a horizontal friction-free air table
    6·1 answer
  • An object with a mass of 20 kg has a net force of 80 N acting on it. What is the acceleration of the object?
    10·2 answers
  • What is first and second conditions of equilibrium?
    6·1 answer
  • Professional and olympic athletes follow a strict workout _________ to be at top performance?​
    15·1 answer
  • A cart is propelled over an xy plane with acceleration compo- nents ax 4.0 m/s2 and ay 2.0 m/s2. Its initial velocity has com- p
    11·1 answer
  • Which scientific description of heat is accurate? A. Heat is the average kinetic energy of atoms in an object. B. Heat is the fl
    6·1 answer
  • (a) Calculate the height (in m) of a cliff if it takes 2.48 s for a rock to hit the ground when it is thrown straight up from th
    9·1 answer
  • What does electrical energy transform into when used by objects in a home?
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!