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
Tresset [83]
3 years ago
8

Shayla was late for school. She ran the last half mile in 4 minutes. What was her average speed in miles per hour?

Physics
1 answer:
Shtirlitz [24]3 years ago
6 0

Answer:

7.5 miles per  hour

Explanation:

You might be interested in
What do we call the principal SI units that are used to derive all other SI units? Question 3 options:
Angelina_Jolie [31]

Answer: Base units

The principal SI units that are used to derive all other SI units are called base units. The base units are the units of fundamental quantities e.g.  M L T that is Mass, Length, and Time. All other physical quantities can be written in the fundamental dimension forms. The physical quantities are not measured directly but are build up from the building blocks that are the fundamental quantities which have base units.

5 0
3 years ago
An object is thrown into the air at 60m/s, straight up. What is its velocity at the highest point?
Cloud [144]

Explanation:

Whenever an object is at its highest point, the velocity and acceleration of the object is zero.

6 0
3 years ago
The distance between two consecutive nodesof a standing wave is 20.9cm.Thehandgen-erating the pulses moves up and down throughac
irina1246 [14]

Answer:

Velocity, v = 0.239 m/s

Explanation:

Given that,

The distance between two consecutive nodes of a standing wave is 20.9 cm = 0.209 m

The hand generating the pulses moves up and down through a complete cycle 2.57 times every 4.47 s.

For a standing wave, the distance between two consecutive nodes is equal to half of the wavelength.

\dfrac{\lambda}{2}=0.209\ m\\\\\lambda=0.418\ m

Frequency is number of cycles per unit time.

f=\dfrac{2.57}{4.47}\\\\f=0.574\ Hz

Now we can find the velocity of the wave.

Velocity = frequency × wavelength

v = 0.574 × 0.418

v = 0.239 m/s

So, the velocity of the wave is 0.239 m/s.

4 0
3 years ago
Why does it take significantly stronger magnetic and electric field strengths to move the beam of alpha particles compared with
wlad13 [49]
It takes significantly stronger magnetic and electric field strengths to move a beam of alpha particles compared with the beam of electrons(betaparticles) because the charge of an alpha particle is twice stronger than a beta particle. Therefore, more energy is needed to move the alpha particle.
4 0
3 years ago
Do you want robot referees in your favorite class?
jeka94

Answer:

Sounds cool.. but what do they do?

Explanation:

5 0
3 years ago
Read 2 more answers
Other questions:
  • What is the efficiency of a tractor that has a work output of 300j and a work input of 400j
    11·1 answer
  • What are Sir Issac Newton's three laws of motion?
    6·2 answers
  • QUESTION 7
    6·2 answers
  • The absorption line spectrum shows what we see when we look at a hot light source (such as a star or light bulb) directly behind
    11·1 answer
  • What is the velocity of an object with a kinetic energy of 800 J and a mass of 12 kg?
    8·1 answer
  • A vertical spring (ignore its mass), whose spring constant is 1070 N/m, is attached to a table and is compressed 0.100 m.
    10·1 answer
  • Scientists can work in which of the following. Select all that apply.
    11·1 answer
  • Count how many significant figures each of the quantities below has:
    15·1 answer
  • A Smart Car, which has a mass of 1000 kg, is going 20 m/s. When it hits the barrier, it stops with a time of 0.5 seconds. What i
    12·1 answer
  • Which option is an example of an object that has potential energy followed by an object that has kinetic energy?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!