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
Troyanec [42]
3 years ago
5

A horse ran at a constant speed for 4 hours. Then, it decreased its speed by 7 mph for the

Physics
1 answer:
algol133 years ago
6 0

Distance travelled in 4 hours...

730 - 442 = 288 miles

Speed for the 4 hours;

Speed = 288/4 = 72 miles/hour

Speed for the rest of 442 miles...;

(72 - 7) = 65 miles/hour

Time taken for 442 miles..

Time taken = Distance/Speed

; 442/65 = 6.8

Time taken = 6.8 hours

You might be interested in
Name and describe the two layers inside Earth that are undergoing convection and indicate one major consequence of each.
Lilit [14]

Answer:

Mantle and core

Explanation:

The Mantle and Core are the two components within Earth experiencing convection. In several ways the mantle is significant. The one outcome of convective current is the creation of the fresh oceanic lithosphere around OCEANIC RIDGES, formed by mantle upwelling. Core is indeed the planet's innermost layer.

5 0
3 years ago
Its Acceleration during the upward Journey ? ​
s344n2d4d5 [400]
Acceleration will be 9.81 if it goes downwards. If it accelerates upwards it will be -9.81m/s^2
7 0
3 years ago
A physicist found that a force of 1.32 N was measured between two charged spheres. The distance between the spheres was 95 cm. C
labwork [276]

The electric force (and the gravitational force too) is inversely proportional
to the square of the distance between the objects involved.

In this question, the distance is increased by a factor of  (1.25/0.95) .

So the electric force will change by the factor of  (0.95/1.25)² .

The new force is

           (1.32 N) · (0.95/1.25)²  =  0.762... newton   (rounded)
5 0
3 years ago
How can a magnetic field be used to generate an electric current?
Irina18 [472]
<span>When a magnet moves near a wire, it's changing field causes the electrons in the wire to flow as electric current.</span>
3 0
3 years ago
The angle of incidence of a light beam in air onto a reflecting surface is continuously variable. The reflected ray is found to
Mariana [72]

Answer:

  n = 2.0686

Explanation:

When an unpolarized ray of light is reflected on a surface, the reflected ray is partially polarized, complete polarization occurs when it is true that between the transmitted and reflected ray one has 90, the relationship is

        n = so tea

 let's calculate

        n = tan 64.2

        n = 2.0686

8 0
3 years ago
Other questions:
  • What is the relationship between the mass, velocity, and momentum of an object?
    8·2 answers
  • What is the difference between simple and compound machines?
    13·1 answer
  • What is the average speed of an object with a total distance traveled of 45 meters in 50 seconds
    6·1 answer
  • Help me please, help
    7·2 answers
  • 1. True or False: Since the 1990s the USA has been working with Russia and
    6·1 answer
  • Question 2 10
    5·1 answer
  • what would happen to the temperature on mercury during the day if a sunspot was directly in line with it's surface?
    11·1 answer
  • The force F shown in Figure 4.30 has a moment of 40 Nm about the pivot. Calculate the magnitude
    15·1 answer
  • Which year was pluto no longer considered a planet?.
    14·1 answer
  • Elizabeth has two different electromagnets. Both electromagnets are connected to the same power source and are made of the same
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!