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
kirill115 [55]
3 years ago
12

You could use an elevator or the stairs to lift a box to tenth floor.which has greater power?

Physics
1 answer:
erastova [34]3 years ago
7 0

Stairs don't have any power at all.  All the energy used to climb them
has to come from your muscles.

An elevator gets its power from the electric motors that lift it.  All YOU
have to do is stand there and look around.

All of this is a big part of the reason why elevators have become so
popular, and why no buildings with more than a few floors were built
before elevators were invented.


You might be interested in
HELPPP!!!!<br> if you double the force what is the change in acceleration
jenyasd209 [6]

As we know that acceleration is directly proportional to force, therefore as the force is doubled, acceleration gets doubled too.

8 0
3 years ago
To overcome an object's inertia, it must be acted upon by __________. A. gravity B. energy C. force D. acceleration
astra-53 [7]
In order to overcome an object’s inertia (resistance to change), it must be acted upon by an unbalanced force, so the answer to the problem is letter C.
7 0
3 years ago
Read 2 more answers
What is the gravitational potential energy of a 15.0kg object that is 5.00m above the ground relative to a point 8.00m above the
Licemer1 [7]

Explanation:

an object's gravitational potential energy Eg is m×g×h where:

m=mass

g=9.8m/s²

h=height relative to the closest object below it (because it cannot potentially fall through it

so Eg = 15×9.8×5=735J

4 0
2 years ago
How many protons are in this atom if it has a balanced charge
Lerok [7]
It would be 20 protons left because 1-19= 20
7 0
2 years ago
3.
Flura [38]

Answer:

about 4 km

Explanation:

15 minutes is a quarter of an hour, so you divide 16km by 4 to get your answer

8 0
3 years ago
Other questions:
  • a 2kg marble is moving at 3 m/s when it strikes another 4kg marble moving in the opposite direction at -3 m/s. What will be the
    11·1 answer
  • Which of the following natural features is formed by weathering, erosion, and deposition?
    9·2 answers
  • Ugygyguygugugyub bbhjhghjgyg (bhjbgj yu
    9·1 answer
  • A glider is gliding through the air at a height of 416 meters with a speed of 45.2 m/s. The glider
    8·1 answer
  • You can use one or more of your five senses to make ______ during an inquiry activity
    14·1 answer
  • A 5.45-g combustible sample is burned in a calorimeter. the heat generated changes the temperature of 555 g of water from 20.5°c
    5·1 answer
  • Small evidence is also called what?
    14·1 answer
  • An inquisitive physics student and mountain climber climbs a 48.0-m-high cliff that overhangs a calm pool of water. He throws tw
    9·1 answer
  • 2. If a car is moving down a straight highway at a constant speed of 70 miles per hour, it has no net
    11·1 answer
  • Suppose a shrimp has been put on the ground that has just been taken out of water.Now touch the shrimp from a distance by a stic
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!