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
____ [38]
3 years ago
15

A horse pulls a cart along a flat road. They start from rest and as time goes on their speed increases. Consider the following f

our forces:
The force of the horse pulling on the cart;

The force of the cart pulling on the horse;

The force of the horse pushing on the road

The force of the road pushing on the horse.

Which of the following statements is true concerning these forces?

Force 2 exceeds force 4.

Force 2 is less than force 3.

Force 3 exceeds force 4.

Forces 1 and 2 cannot have equal magnitudes.

Force 1 exceeds force 2.
Physics
1 answer:
Anna11 [10]3 years ago
5 0

Answer:

Forces 1 and 2 cannot have equal magnitudes.

Force 1 exceeds force 2.

Explanation:

Numbering the given statements:

  1. The force of the horse pulling on the cart.
  2. The force of the cart pulling on the horse.
  3. The force of the horse pushing on the road .
  4. The force of the road pushing on the horse.
  • When a horse pulls a cart along a flat road starting from the state of rest, the horse applies a force on the ground in downward-back direction diagonally and as its reaction it moves forward. During this action there is also a reaction force by the road on the horse which exceeds the force of the horse on the ground and as a result the horse moves forward.
  • For pulling the cart the horse applies the force on  the cart  in the forward direction and as a reaction the cart applies a force on the horse in the backward direction which is less than the force of the horse on the cart resulting in the forward motion of the cart along with the horse.

You might be interested in
The order of elements in the periodic table is based on the atomic number.<br> true or false
kirill [66]
True the elements are ordered in the atomic number
4 0
3 years ago
The Moon orbits Earth in an average of p = 27.3 days at an average distance of a =384,000 kilometers. Using Newton’s version of
Korvikt [17]

Answer:

The mass of the earth, M=6.023\times 10^{24}\ kg

Explanation:

It is given that,

Time taken by the moon to orbit the earth, T=27.3\ days=2358720\ m

Distance between moon and the earth,r=384000\ km=384\times 10^6\ m

We need to find the mass of the Earth using Kepler's third law of motion as :

T^2=\dfrac{4\pi^2}{GM}r^3

M=\dfrac{4\pi^2r^3}{T^2G}

M=\dfrac{4\pi^2\times (384\times 10^6)^3}{(2358720)^2\times 6.67\times 10^{-11}}

M=6.023\times 10^{24}\ kg

So, the mass of the earth is 6.023\times 10^{24}\ kg. Hence, this is the required solution.

7 0
3 years ago
The mass of an electron is...
tester [92]
<span>The mass of an electron is not significant to the overall mass of the atom. (B)

It takes roughly 1,850 electrons to equal the mass of ONE proton or neutron,
but the most complex atom has only around 100 of them.</span>
4 0
3 years ago
What is refraction?
Damm [24]
B- light bends as it passes through an object ( a would be reflect)
4 0
3 years ago
Calculate the energy, wavelength, and frequency of the emitted photon when an electron moves from an energy level of -3.40 eV to
jasenka [17]

Answer:

(a) The energy of the photon is 1.632 x 10^{-8} J.

(b) The wavelength of the photon is 1.2 x 10^{-17} m.

(c) The frequency of the photon is 2.47 x 10^{25} Hz.

Explanation:

Let;

E_{1} = -13.60 ev

E_{2} = -3.40 ev

(a) Energy of the emitted photon can be determined as;

E_{2} - E_{1} = -3.40 - (-13.60)

           = -3.40 + 13.60

           = 10.20 eV

           = 10.20(1.6 x 10^{-9})

E_{2} - E_{1} = 1.632 x 10^{-8} Joules

The energy of the emitted photon is 10.20 eV (or 1.632 x 10^{-8} Joules).

(b) The wavelength, λ, can be determined as;

E = (hc)/ λ

where: E is the energy of the photon, h is the Planck's constant (6.6 x 10^{-34} Js), c is the speed of light (3 x 10^{8} m/s) and λ is the wavelength.

10.20(1.6 x 10^{-9}) = (6.6 x 10^{-34} * 3 x 10^{8})/ λ

λ = \frac{1.98*10^{-25} }{1.632*10^{-8} }

  = 1.213 x 10^{-17}

Wavelength of the photon is 1.2 x 10^{-17} m.

(c) The frequency can be determined by;

E = hf

where f is the frequency of the photon.

1.632 x 10^{-8}  = 6.6 x 10^{-34} x f

f = \frac{1.632*10^{-8} }{6.6*10^{-34} }

 = 2.47 x 10^{25} Hz

Frequency of the emitted photon is 2.47 x 10^{25} Hz.

6 0
2 years ago
Other questions:
  • Which bike rider has the greatest momentum?
    15·1 answer
  • Does anybody watch this anime?
    11·2 answers
  • Which step in an investigation of arson helps insurance claims the most?
    13·1 answer
  • The period of a wave is 10 seconds and it’s wavelength is 2 meters. What is the wave’s speed?
    8·1 answer
  • Evaporation only occurs at the surface of a liquid. true or false.
    13·2 answers
  • 6) A car of mass 1000kg moving with a velocity of 40m/s collides with a tree and comes to stop in 5s. What will be the force exe
    8·1 answer
  • True or False: GLOBAL WINDS
    13·2 answers
  • What is the frequency of a wave travelling at 45.45 m/s with a wavelength of 2 m?
    6·1 answer
  • What is the gravitational force that two objects would feel if they are 3.5 meters apart? Object 1 has a mass of 10x10^5 kg and
    6·1 answer
  • 2. Above right: The four positions of the thrown ball with no gravity are
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!