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
Vesna [10]
2 years ago
5

If you push a crate across a factory floor at constant speed in a constant direction, what is the magnitude of the force of fric

tion on the crate compared to your push
Physics
1 answer:
poizon [28]2 years ago
3 0

Answer:

The magnitude of the force of friction equals the magnitude of my push

Explanation:

Since the crate moves at a constant speed, there is no net acceleration and thus, my push is balanced by the frictional force on the crate. So, the magnitude of the force of friction equals the magnitude of my push.

Let F = push and f = frictional force and f' = net force

F - f = f' since the crate moves at constant speed, acceleration is zero and thus f' = ma = m (0) = 0

So, F - f = 0

Thus, F = f

So, the magnitude of the force of friction equals the magnitude of my push.

You might be interested in
Please !!! I really need help !!! How do I understand these ?!!!!
trasher [3.6K]

Answer

The answer for the first one I think is false.

The second one would be true i think. I hope i got it right and have a wonderful day

8 0
3 years ago
Read 2 more answers
An open-topped freight car with mass 24,000 kg is coasting without friction along a level track. It is raining very hard, and th
skelet666 [1.2K]

Answer:

(a) v = 3..6 m/s

(b) The rain falling downward has been able to affect the horizontal motion of the car by reducing it's velocity from 4 m/s to 3.6 m/s.

Explanation:

from the question we have the following:

mass of the car (Mc) = 24,000 kg

initial velocity of the car (u) = 4 m/s

mass of water (Mw) = 3000 kg

final velocity of the car (v) = ?

(a) we can calculate the final momentum of the car by applying the conservation of momentum where

initial momentum = final momentum

Mc x U = (Mc + Mw) x V

24000 x 4 = (24000 + 3000) x v

96,000 = 27000v

v =3.6 m/s

(b) The rain falling downward has been able to affect the horizontal motion of the car by reducing it's velocity from 4 m/s to 3.6 m/s.

7 0
2 years ago
Water has the ability to dissolve polar covalent molecules like sucrose by
Alla [95]

Explanation:

Sucrose is a disaccharide which is composed of fructose and glucose. Sucrose molecule has oxygen atoms bonded to hydrogen atoms (O-H bonds - Polar groups) on all ends of its double 6-Carbon ring. The areas near the oxygen atoms are slightly negative, and the areas near the hydrogen atoms are slightly positive that is, the O-H bonds are polar. They bond with the neighbouring Oxygen and Hydrogen atoms because of their

dipole - dipole attractions and hence hydrogen bonds are formed.

However, the covalent bonds within the molecule aren't broken. But rather, the hydrogen bonds holding the sucrose molecules in the crystalline lattice.

5 0
2 years ago
A 1.5m wire carries a 8A current when a potential difference of 67v is applied what is the resistance of the wire
Drupady [299]

Data is inappropriate

  here, we need gauge of the wire i.e., diameter of the wire, so that we calculate the resistance by using the formula

                              R  = ρl/A            

            where R= resistance ; Ω

                       l = length of wire ; m

                       A = area of wire ; m²

                       ρ = resistivity ; Ω-m

But in general ohms law is

                    V = I R

                    R = V/I ;

but here we also calculate "R" from length of wire in which the current is flowing.

I hope it is helpful to you.

8 0
3 years ago
A neutral atom has no overall charge. Explain this in terms of its particles.
ruslelena [56]

Answer:

i just need points rn sorry

Explanation:

4 0
3 years ago
Read 2 more answers
Other questions:
  • Which statement is true?
    11·1 answer
  • A new planet is discovered that has twice the Earth's mass and twice the Earth's radius. On the surface of this new planet a per
    15·1 answer
  • A little girl slid down a playground slide, decreasing her potential energy by 1000 J while increasing her kinetic energy by onl
    12·2 answers
  • Atmospheric pressure and density at the top of Mount Everest ​
    6·1 answer
  • You are designing a 108 cm3 right circular cylindrical can whose manufacture will take waste into account. There is no waste in
    6·1 answer
  • My school doesn’t really teach help
    14·1 answer
  • 2 ways in which the effects of friction can be minimised in the experiment​
    9·1 answer
  • There are strong winds on these trees. What makes the wind stronger? Why are they blowing from different directions?
    8·1 answer
  • What is 34 + (5) × (1.2465) written with the correct number of significant figures?
    9·1 answer
  • Which of these shows the position of the Sun, Moon, and Earth when a full moon phase occurs? (8.7B)
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!