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
Phoenix [80]
2 years ago
10

a horse moves a sleigh 1.00 kilometers by applying a horizontal 2000 Newton force on its harness for 45 minutes. what is the pow

er of the horse?
Physics
1 answer:
tatyana61 [14]2 years ago
8 0
--  If 2,000 newtons of force were applied through a distance of 1,000 meters,
then 2,000,000 newton-meters = 2,000,000 joules of work were done.

-- 45 minutes = (45 x 60) = 2,700 seconds

-- Power = (work) / (time) = (2,000,000 j) / (2,700 s) = <u>740.74 watts</u>

Interestingly, that's almost exactly 1 horsepower.  (0.99295... of 746 watts)
You might be interested in
True or False: pH is a measure of how acidic or basic a solution is.
Salsk061 [2.6K]

Answer:

Explanation:

True

5 0
3 years ago
Opal adds 25 grams of salt to a one-liter glass beaker filled up to its volume mark with pure water. She stirs the water until t
Mars2501 [29]

By what i know i think that the answer would be A a homogeneous mixture.

5 0
3 years ago
According to the concept of punctuated equilibrium, _____.
STatiana [176]
<span>According to the concept of punctuated equilibrium, </span>new species evolve suddenly over relatively short periods of time (a few hundred to a thousand years), followed by longer periods in which little genetic change occurs. Hope this helps. Have a nice day.
7 0
2 years ago
It takes 500 J of work to compress a spring 10 cm. What is the force constant of the spring? (b) When a 3.0 kg block is pushed a
NARA [144]

Answer:

Explanation:

a) Energy stored in spring = 1/2 k x² = .5 x k 0.1²

500 = 5 x 10⁻³ k ,

k = (500/5) x 10³ = 10⁵ N/m

b )

k = 4.5 x 10¹ = 45 N/m

Stored energy = 1/2 k x² = .5 x 45 x 8² x 10⁻⁴ =1440 x 10⁻⁴ J

This energy gets dissipated by friction .

work done by friction = μ mg d

d is the distance traveled under friction

so 1440 x 10⁻⁴ = μ x 3 x 9.8 x 2

μ = 245 x 10⁻⁴  or 0.00245 which appears to be very small. .

8 0
2 years ago
In nature, where do fusion reactions take place?
hjlf
Fusion reactions happen in stars 
3 0
2 years ago
Read 2 more answers
Other questions:
  • A researcher rolls some clay into a ball and shows it to Zian, then squishes the clay into a pancake. Zian understands that the
    13·1 answer
  • The most useful unit of measurement for measuring the thickness of a side of a lab beaker would be a(n)
    10·1 answer
  • A block of mass mm starts from rest and slides down from the top of a wedge of height hh and length dd. The surface of the wedge
    15·1 answer
  • Electron kinetic energies are often measured in units of electron-volts (1 eV 1.6 x 10-19 J), which is the kinetic energy of an
    9·1 answer
  • after a cannonball is fired into frictionless space, the amount of force needed to keep it going equals​
    10·1 answer
  • Convert 15 litre into cubic metre​
    7·1 answer
  • Can someone help me
    11·1 answer
  • What is the final step in the fourth stage of technological design, after a product has been improved and approved?
    7·1 answer
  • You are in a boat that is 1400 kg. The current is 1500N and is pushing you back. If you have an acceleration of 3 m/s^2 what is
    11·1 answer
  • Using a material that is ‘Ohmic’ (it follows Ohm’s Law), you make a circuit using wire, a battery, and a resistor. After measuri
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!