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
Vlad [161]
3 years ago
9

A car travels 40 kilometers at an average speed of 80km/h and then travels 40 kilometers at an average speed of 40km/h. The aver

age speed of the car for this 80-km trip is
Physics
1 answer:
iris [78.8K]3 years ago
8 0

Speed = distance / time

Part 1: 40 km at 80 km per goir = 0.50 hours

Part 2: 40 km at 40 km per hour = 1 hour

The time of the trip was 1.5 hours

Total distance was 40 + 40 = 80 ins.

Speed = distance / time = 80/1.5 = 53.33 km/he ( round answer as needed)

You might be interested in
The Sun delivers an average power of 1150 W/m2 to the top of the Earth’s atmosphere. The permeability of free space is 4π × 10−7
My name is Ann [436]

Answer:

E=930.84 N/C

Explanation:

Given that

I = 1150 W/m²

μ = 4Π x 10⁻⁷

C = 2.999 x 10⁸ m/s

E= C B

C=speed of light

B=Magnetic filed  ,E=Electric filed

Power  P = I A

A=Area=4πr²  ,I=Intensity

I=\dfrac{CB^2}{2\mu_0}

I=\dfrac{CE^2}{2\mu_0 C^2}

E=\sqrt{{2I\mu_0 C}}

E=\sqrt{{2\times 1150\times 4\pi \times 10^{-7}(2.99792\times 10^8)}}

E=930.84 N/C

Therefore answer is 930.84 N/C

4 0
4 years ago
Place the tiles in the correct order to describe how a nuclear power plant generates power.
fgiga [73]

Your order is correct here.

4 0
4 years ago
Read 2 more answers
A ray diagram without the produced image is shown.
Mashutka [201]
The answer is real and smaller than the object. The image point of the top of the object is the point where the two refracted rays intersect. Tracing the entire image having the same distance from the mirror as the image of the top of the object and with the bottom on the principal axis. Hence, a real inverted image will be formed for an object outside the focal point. 
3 0
3 years ago
Read 2 more answers
in a given chemical reaction the energy of the products is greater than the energy of the reactants this is because
pashok25 [27]
<span> A reaction in which energy is absorbed from the surroundings is called an endothermic reaction. In endothermic reactions the enthalpy of the products is greater than the enthalpy of the reactants. Exothermic reactions heat up their surroundings while endothermic reactions cool them down.
I hope this helps you </span>
7 0
4 years ago
Freezing point is a ____________________ property.<br> chemical<br><br> physical
Mariana [72]
ANSWER: Freezing point is a physical property
3 0
3 years ago
Other questions:
  • Explain why When a small drop of detergent is placed on water, the needle moves rapidly away from it and sinks when more deterge
    12·1 answer
  • A chemical property of copper is its what?
    7·1 answer
  • A group of particles in a magnetic material whose magnetic fields line up with each other is called a ____________?
    6·1 answer
  • Rod A and rod B are cylindrical rods made of the same metal. amd they differ only in size. Rod B has double the length and doubl
    7·1 answer
  • A loaded garbage truck has low acceleration. It takes pm 10 seconds to go from 0 to 100 What is the acceleration of the garbage
    8·1 answer
  • A hand pump is being used to inflate a bicycle tire that has a gauge pressure of 59.0 lb/in2. If the pump is a cylinder of lengt
    8·1 answer
  • Lauren is comparing rocks from two different locations. She has the following
    14·1 answer
  • A 15kg dog jumps out of a 40kg canoe. If the dogs velocity is 1.2m/s, what is the velocity of the canoe?
    13·1 answer
  • PLEASE HELP URGENT
    15·1 answer
  • A glass prism causes dispersion or deviation but glass plate doesn't.why?​
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!