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
Citrus2011 [14]
3 years ago
14

Dalvin pushed a 20kg obiect a distance of 10 meters in 30 seconds. He pushed a 40kg object a distance of 5 meters in 30 seconds.

What can you INFER about force and mass from the scenario?
Physics
1 answer:
Ksju [112]3 years ago
7 0

Answer:

Explanation:

The force applied on a body is given as:

       Force = mass x acceleration

First scenario;

   Mass of object  = 20kg

   distance  = 10m

    time    = 30s

Second scenario;

     Mass of object  = 40kg

     distance  = 5m

      time  = 30s

speed  1 = \frac{distance}{time}  = \frac{10}{30}   = 0.33m/s

speed 2  = \frac{distance}{time}  = \frac{5}{30}  = 0.167m/s

The first scenario;

       F = 20 a

Second scenario;

       F = 40 a

Momentum of 1 = mass x velocity  = 20 x 0.33  = 6.6kgm/s

Momentum of 2  = mass x velocity  = 40 x 0.167 = 6.68kgm/s

Force  = \frac{m(v-u)}{t}

 m(v-u) = momentum

From this scenario, the first body has a lesser force and mass compared to the second one because it has a slightly higher momentum.

You might be interested in
When the electron in a hydrogen atom moves from n = 6 to n = 1, light with a wavelength of ________ nm is emitted?
Oduvanchick [21]
First we find the energy level with the following formula, where a is the energy level, n1 is the final energy level, n2 is the starting energy level and r is Rydberg's constant in Joules
a = r \times ( \frac{1}{n1}  -  \frac{1}{n2} )
We insert the values

a = 2.18 \times  {10}^{ - 18}  \times ( \frac{1}{ {1}^{2} } -  \frac{1}{ {6}^{2} }  )
= 2.12 \times {10}^{ - 18}
The wavelength is found with this formula, where h is Planck's constant and c is the speed of light
wavelength =  \frac{h \times c}{a}
Finally we insert the values
\frac{6.626 \times  {10}^{ - 34}  \times 3 \times  {10}^{8} }{2.12 \times  {10}^{ - 18} }  = 9.376 \times  {10}^{ - 8}
Which is the same as 93.8 nm
3 0
3 years ago
Note that the scale bar under the photo is labeled 1 μm (micrometer). The scale bar works the same way as a scale on a map, wher
AnnZ [28]

Answer:

Hello your question has some missing parts attached below is the complete question

answer : 4 μm

Explanation:

since the scale bar works the same way as a scale on a map , each bar will therefore represent 1 μm and the mature parent cell's is about 4 times the labeled value hence the Mature parent cell diameter will approximately be : 4 μm

8 0
3 years ago
If displacement covered by a particle is zero then distance cover by it<br>​
sleet_krkn [62]

Answer:

When displacement is zero, the particle may be at rest, therefore, distance travelled = 0.

Again, when displacement is zero, the final position matches with the initial position after some time, but the distance travelled will not be zero.

7 0
2 years ago
Which of the following is fact-based science rather than part of a personal belief system?
marusya05 [52]
Since there are no choices, then this question calls for open-ended answers. Facts-based science must have proven underlying laws that support inferences such as Coulomb's Law, Kinetic Theory of Matter and many more. On the other hand, examples of science that focus on personal belief is philosophy. This depends on the perspective of known philosophers. An example would be Sigmund Freud who proposed the theory of 3 personalities. Although it is more on personal beliefs, this is used as a foundation in the study of psychology.
3 0
3 years ago
The periodic table lists all the elements according to the number of __________ they have! You can’t change __________ without c
raketka [301]

Answer:

protons

atomic number

Note: The same atomic number can be associated with several different values of atomic mass, but an element can have only 1 atomic number,

5 0
2 years ago
Other questions:
  • Suppose two waves collide, and the temporary combined wave that results is smaller than the original waves. what term best descr
    14·1 answer
  • What speed is a car going if it takes 2 hours to go 80 miles?
    6·2 answers
  • A uniform plank of length 6.1 m and mass 33 kg rests horizontally on a scaffold, with 1.6 m of the plank hanging over one end of
    5·1 answer
  • Write code to compare two numbers. The code should check whether the first number is less than or equal to the second and then d
    9·1 answer
  • Witch device uses AC current to operate
    15·1 answer
  • A 200 kg weather rocket is loaded with 100 kg of fuel and fired straight up. It accelerates upward at 35 m/s2 for 35 s , then ru
    12·1 answer
  • What type of solar radiation does not reach the surface of the earth?
    6·1 answer
  • The law of reflection applies to ONLY totally reflected waves.<br> Is it true or false
    11·1 answer
  • There are strong winds on these trees. What makes the wind stronger? Why are they blowing from different directions?
    8·1 answer
  • How polar bear can survive in the polar region<br>​
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!