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
MatroZZZ [7]
3 years ago
6

What force is necessary to accelerate a 70-kg object at a rate of 4.2 m/s2 ? Show your wo k below?

Physics
1 answer:
Naily [24]3 years ago
4 0
Newton's 2nd law of motion:

         Force = (mass) x (acceleration)

                   = (70 kg) x (4.2 m/s²)

                   =  (70 x 4.2)   kg-m/s²

                   =      294 newtons .

A picture of my wok is attached below. 

You might be interested in
When heating water, during what temperature range will the temperature cease to change for some time?
fgiga [73]
The correct answer would be B.) 98°c-102°c
7 0
3 years ago
Read 2 more answers
If the energy from the light is captured and stored by the surface without being reflected or transmitted, then it has been ____
vekshin1
A. ABSORBEDDDDDDDDDDDDDDDDDD
6 0
3 years ago
Read 2 more answers
a man pushes on a wall with a force of 50N. what are the size and direction of the force that the wall exert on the man?
Ira Lisetskai [31]
According to Newton's 3rd law of motion, every action has an equal and opposite reaction. So Wall must apply a force of 50 Newton but in opposite direction. Hope you got it :-D
5 0
3 years ago
When a star is in the main-sequence stage of its life, it is fusing __________ into ________
gizmo_the_mogwai [7]
Hydrogen into helium
7 0
3 years ago
A house has well-insulated walls. It contains a volume of 105 m3 of air at 305 K.
REY [17]

Answer: 85.46\ kJ

Explanation:

Given

Volume of air V=105\ m^3

Temperature of air T=305\ K

Increase in temperature \Delta T=0.7^{\circ}C

Specific heat for diatomic gas is C_p=\dfrac{7R}{2}

Energy required to increase the temperature is

\Rightarrow Q=nC_pdT\\\\\Rightarrow Q=n\times \dfrac{7R}{2}\times \Delta T\\\\\Rightarrow Q=\dfrac{7}{2}nR\Delta T\\\\\Rightarrow Q=\dfrac{7}{2}\times \dfrac{PV}{T}\times \Delta T\quad [\text{using PV=nRT}]

Insert the values

\Rightarrow Q=\dfrac{7}{2}\times \dfrac{1.01325\times 10^5\times 105}{305}\times 0.7\\ \text{Assuming air pressure to be atmospheric P=}1.01325\times 10^5\ N/m^2\\\\\Rightarrow Q=0.8546\times 10^5\\\Rightarrow Q=85.46\ kJ

6 0
3 years ago
Other questions:
  • An isotope of the element fluorine has 9 protons and 10 neutrons. What is the name of this isotope? fluorine-
    11·2 answers
  • Calculate the potential energy of a 4 kg cat crouched 3 meters off the ground
    12·1 answer
  • The drag coefficient of a car at the design conditions of 1 atm, 25°c, and 90 km/h is to be determined experimentally in a large
    15·1 answer
  • What is the mean of the data set 2ml, 4ml, 6ml, 8ml, 8ml, 8ml
    5·1 answer
  • You walk 4.5 km in one direction then make a 45 degree turn to the right and walk another 6.4 km what is the magnitude of your d
    14·1 answer
  • Mercury has one of the lowest specific heats. This fact added to its liquid state at most atmospheric temperatures make it effec
    10·1 answer
  • Two objects have masses m and 5m, respectively. They both are placed side by side on a frictionless inclined plane and allowed t
    7·1 answer
  • Between which two points did they travel fastest?
    9·1 answer
  • Newton first law of motion​
    13·1 answer
  • A local AM radio station broadcasts at a frequency of 696 KHz. Calculate the energy of the frequency at which it is broadcasting
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!