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
Setler79 [48]
3 years ago
11

Marys airplane trip took 5.8 hours for one-half of that time, the airplane flew at a constant speed of 640 miles per hour and fo

r the rest of the time, it flew at a speed of 580 mph. what distance did mary travel?
Physics
1 answer:
Olenka [21]3 years ago
7 0
Distance is speed x time.  Half of the trip is 5.8/2 = 2.9hrs.
640 x 2.9 = 1856mi
580 x 2.9 = 1682mi
1856mi+1682mi=3538mi.

You could also calculate her average speed.  This is easy since it was divided in two equal time slices.  Average Speed = (640+580)/2 = 610mi/hr
Now 610mi/hr x 5.8hrs = 3538mi
You might be interested in
How high is an object lifted if the total work done on it is 125 J and the force required to lift the object is 25 N? Use the eq
mixas84 [53]
The answer would be C. 5m
This is because to find d, you would need to divide W (125 J) by F (25 N).
Hope this helps!
8 0
3 years ago
Wind power holds great promise for the united states because of the _____________, and experts believe wind energy could meet as
SIZIF [17.4K]
Wind<span> power holds great promise for the united states because of the great wind power (capacity), and experts believe wind energy could meet as much as 20 percent of the nation’s energy needs . Texas is the state with most wind capacity. On the second place is Iowa and oh the third place Oklahoma. The wind farms produce clean energy that does not harm the environment.</span>
6 0
3 years ago
Select the correct answer. The motion of a car on a position-time graph is represented with a horizontal line. What does this in
enyata [817]

If the car's motion appears as a horizontal line on a <u><em>position-time </em></u>graph, it shows that as time changes, the car's position doesn't change.

This is just a complicated way to say that the car is <em>not moving</em>.<em> (A)</em>

7 0
3 years ago
A sound wave of frequency
Artyom0805 [142]

Answer:

0.283m

Explanation:

Speed (v) = wavelength × Frequency (f)

Wavelength = speed/ frequency

Wavelength = 343/ 1210 = 0.283m

8 0
3 years ago
What is Icm, the moment of inertia of the disk around its center of mass? You should know this formula well.
kirill115 [55]

Answer:

I_{cm}=\frac{MR^{2}}{2}

Explanation:

First at all let's understand what is moment of inertia (I). The moment of inertia of a body is the rotational analog of mass in linear motion, this is, it determines the force we should apply to the body to acquire a specific angular acceleration. But in the rotational case we should specify about what point we are going to rotate an object so always the moment of inertia is defined respect to an arbitrary axis. It's usual to use the center of mass as an axis of rotation, because it's an unique point where we can assume all the mass of the object is concentrated.The moment of inertia respect of an axis that passes through the center of mass is denoted I_{cm}.

Now, if the disk you're talking about has uniform density the center of mass is exactly at the geometrical center of the disk, and the moment of inertia of a disk as that is:

I_{cm}=\frac{MR^{2}}{2}

6 0
3 years ago
Other questions:
  • Which method would likely use less energy? (1) Pushing the heavy box at a slow, constant pace or (2) Pushing the heavy box in fa
    15·1 answer
  • Which of these equations is dimensionally correct?
    14·1 answer
  • I need help, ASAP i’m failing and i have no clue what’s going on in my AP physics class at all.
    12·1 answer
  • PLEASE HELP PHYSICS!!!!! WILL MARK BRAINLIEST IF CORRECT!!!!
    11·2 answers
  • In a gasoline engine, the area in the cylinder head where the air-and-fuel mixture is burned is called the
    7·2 answers
  • The sun _____.
    14·1 answer
  • Which of the following is NOT an important factor in selecting a medical professional?
    6·1 answer
  • Tarnish is produced by a redox reaction that occurs when a metal reacts with
    7·1 answer
  • 1. Which pair of physical quantities consists of two vectors?
    6·2 answers
  • When did the story happen of paragraph ​
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!