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
allsm [11]
3 years ago
14

An 8 kg toddler is running at a speed of 10 m/s. how much energy does he have?

Physics
1 answer:
wlad13 [49]3 years ago
8 0
To find the Kinetic energy this is the equation


KE=1/2mv^2

so we know the mass (m) which is 8kg

we also know the velocity (v) which is 10 m/s

so we plug that into the equation and it should look like this - 1/2(8kg)(10m/s)^2 now we solve

so 1/2 x 8 = 4 so then we just do (4)(10)^2 which gets us 400.

Since kinetic=Joules

The answer is 400 J
You might be interested in
Maria and Miquel were enjoying the fireworks when they got into a chemistry argument. Maria insisted that the fireworks were the
Tcecarenko [31]
In this case, there is a chemical reaction where there is the burning of fuels that can vary between some within the periodic table, but when the fuel is burned a reaction occurs that gives the coloration the explosions of the fires.
5 0
3 years ago
Read 2 more answers
Question 8: Unspooling Thread (100 points) A 110 g spool of thread with a 4.2 cm radius is held up by a peg through its center a
Vaselesa [24]

Answer:

   a = 7.29 m / s²,      T = 0.40 N

Explanation:

To solve this exercise we must apply Newton's second law to each body

The needle

              W -T = m a

              mg - T = ma

The spool, which we will approach by a cylinder

             Σ τ = I α

             T R = I α

the moment of inertia of a cylinder with an axis through its center is

             I = ½ M R²

angular and linear variables are related

            a = α R

            α = a / R

we substitute

           T R = (½ M R²) a / R

            T = ½ M a

we write our system of equations together

              mg - T = m a

                      T = ½ M a

we solve

              m g = (m + ½ M) a

              a = \frac{m}{m + \frac{1}{2} M}  \ g

let's calculate

              a = \frac{0.160}{0.160 + \frac{1}{2} 0.110} \ 9.8

              a = 7.29 m / s²

now we can look for the tension

              T = ½ M a

              T = ½ 0.110 7.29

               T = 0.40 N

7 0
3 years ago
How do scientists use models to make predictions?
slamgirl [31]

Answer:

scientists use information about the past to build their climate models. scientists test their climate models by using them to forecast past climates. when scientists can accurately forecast past climates, they can be more confident about using their models to predict future climates.

Explanation:

scientists use information about the past to build their climate models. scientists test their climate models by using them to forecast past climates. when scientists can accurately forecast past climates, they can be more confident about using their models to predict future climates.

3 0
3 years ago
Which process is represented by the PV diagram?
Reika [66]

Hi!


The answer would be A. Isobaric Process


<h3>Explanation:</h3>

Isobaric process is a process where the pressure inside a system remains unchanged. In the Pressure Volume graph given, you can see that the pressure (y axis) remains constant with an increasing volume ( x axis). An example of this would be heating a container with a movable piston. Now, the degree of pressure is dependent on the frequency of collisions of particles inside a system on the walls. If this frequency changes, the pressure changes (proportionally). In our example, heating a container with a movable piston results in the particles inside the container to gain kinetic energy and move faster, meaning an increased frequency of collisions (higher pressure), but at the system time the increase in pressure results in the piston being pushed outwards, causing the volume of the container to increase. This results in decreased frequency of collision of the particles with the walls of the container (lesser pressure). This results in the a zero net effect on the pressure.


Hope this helps!

3 0
3 years ago
What are some types of landforms on Earth’s surface?<br><br><br><br> PLS ANSWER QUICK 11 POINTS
Brrunno [24]

Answer:

plateau, mountains, hills, plains

5 0
3 years ago
Read 2 more answers
Other questions:
  • A 40% pressure drop across an oil filter screen indicates that?
    9·1 answer
  • Which derived quantity might be measured in mm^3
    7·1 answer
  • What is the experimental variable?
    8·1 answer
  • Which example best describes a restoring force?
    7·1 answer
  • During a science fair, a group of students came up with the following question: “Is color an inherent property in objects or is
    5·2 answers
  • Approximately what percentage of Earth’s radius is represented by the crust?
    7·1 answer
  • What chemical phenomenon accounts for the elasticity seen in solids?
    9·1 answer
  • Study the arrow that is circled in the image.
    15·2 answers
  • Please help!! I'll name you brainliest!!
    13·1 answer
  • A piece of fruit is falling from a tree.
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!