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
Black_prince [1.1K]
3 years ago
12

You are pushing a heavy box across a rough floor. when you are initially pushing the box and it is accelerating, (a) you exert a

force on the box, but the box does not exert a force on you. (b) the box is so heavy it exerts a force on you, but you do not exert a force on the box. (c) the force you exert on the box is greater than the force of the box pushing back on you. (d) the force you exert on the box is equal to the force of the box pushing back on you. (e) the force that the box exerts on you is greater than the force you exert on the box.
Physics
2 answers:
kotegsom [21]3 years ago
4 0

Answer:

(c) the force you exert on the box is greater than the force of the box pushing back on you.

Explanation:

When a force is exerted on an object such that it starts accelerating without any change in the state of rest of the source of the force that always means that the reaction force of the object on the source is less than the action force.

This condition is in accordance with Newton's second law and Newton's third law.

kodGreya [7K]3 years ago
3 0

The answer is C. If the box is accelerating, that means that the amount of force you are exerting is greater than the force of the box.

You might be interested in
For a point charge, how does the potential vary with distance from the point charge, r?
mr_godi [17]

For a point charge, how does the potential vary with distance from the point charge, r?

a constant

b. r.

c. 1/r.

d. 1/r^2.

e. r^2.

Answer:

The  correct option is  C

Explanation:

Generally for a point charge the electric potential is mathematically represented as

    V  =  \frac{k  Q  }{r }

Here we can deduce that the electric potential varies inversely with the distance i.e

      V  \  \alpha \  \frac{1}{r}

So

   

3 0
3 years ago
A paper airplane with mass 0.1 kg is flying 1.5 m above the ground with a speed of 2 m/s. what is the total mechanical energy of
Drupady [299]
Mechanical(ME) energy, in physical sciences, is the sum of kinetic energy (KE) and potential energy (PE). Below are the calculation in obtaining the energies,
 
     (1) KE =   0.5mv²     =  0.5(0.1 kg) x (2 m/s)² = 0.2 J
     (2) PE =    md          = (0.1 kg) x (1.5 m)        = 0.15 J
      (3) ME =  KE + PE = 0.2 J + 0.15 J               = 0.35 J

Thus, the mechanical energy is 0.35 Joules. 

3 0
3 years ago
Choose all the answers that apply. Heat: is the same as temperature can be increased by compression is transferred in solids by
olga55 [171]

Answer:

The question can be re-framed as:

Heat:

⇒a) is the same as temperature

⇒b) can be increased by compression.

⇒c) is transferred in solids by conduction.

⇒d) is transferred in liquids by convection

⇒e) requires a medium.

Option c and d are correct choices.

Explanation:

⇔Heat is a form of energy which can be transferred from higher temperature to lower temperature.

So heat is not the same as temperature.

Where as temperature is the measure of Kinetic energy  possessed by the particles of an object.

⇔As far as the Ideal Gas Law is concerned any gas will tend to heat up as it is compressed and cool down when it expands.

Heat can't be increased by compression its transfer of energy.

⇔Conduction is the transfer of heat between substances that are in direct contact with each other.

Heat is transferred in solids by conduction.

⇔Heat is transferred from hot places to cold places by convection. Convection occurs when warmer areas of a liquid or gas rise to cooler areas in the liquid or gas.

Heat is transferred in liquids by convection.

⇔Heat does not requires a medium for its transfer as in case of radiation where heat is transferred by electromagnetic waves.

Heat doesn't requires a medium for its transfer.

So our correct answer comprises:

Option C and option D that is Heat "is transferred in solids by conduction" and "is transferred in liquids by convection".

3 0
3 years ago
Read 2 more answers
Multiple Intelligences :
vlada-n [284]

Answer:

all of the above

PLS MARK ME AS BRAINLIAST

8 0
3 years ago
5.00 kg of liquid water is heated to 100.0 °C in a closed system. At this temperature, the density of liquid water is 958 kg/m3.
user100 [1]

Answer:

1.04\times 10^7\ J.

Explanation:

In the question given :

Pressure is constant

Therefore, Work done, W=P\times\Delta V

Pressure, P=1.01 × 105 Pa.

Final volume, V_f=8.50\ m^3.

Initial volume, V_i=\dfrac{Mass}{density}=\dfrac{5}{958}=5.22\times10^-3\ m^3.

Therefore, W=8.58\times 10^{5}\ J.

Also, Heat Given, Q=m\times L=5\times 2.26\times 10^{6}\ J=1.13\times 10^7\ J.

Also, according to First law of thermodynamics:

\Delta U=Q-W=(1.13\times 10^7)-(8.58\times 10^5)=1.04\times 10^7\ J.

Hence, this is the required solution.

8 0
3 years ago
Other questions:
  • Some students want to calculate the work done by friction as an object with unknown mass moves along a straight line on a rough
    9·1 answer
  • How do liquid water, ice, and water vapor differ from each other?
    15·2 answers
  • Dizziness. Our balance is maintained, at least in part, by the endolymph fluid in the inner ear. Spinning displaces this fluid,
    15·1 answer
  • If the net force acting on a laboratory cart as is it being pushed down the hallway is zero, then what is the relationship betwe
    8·1 answer
  • Mark and Sofia walk together down a long, straight road. They walk without stopping for 4 miles. At this point Sofia says their
    12·1 answer
  • A bell is rung. What best describes the density of air around the bell?
    11·2 answers
  • Before railroad were invented, goods often traveled along canals, with mules pulling barges from the bank. If a mule is exerting
    7·1 answer
  • A pressure of 7x10^5N/m is applied to all surfaces of a copper cube (of sides 25 cm) what is the fractional change in volume of
    12·1 answer
  • Question 7 of 10
    10·1 answer
  • HELLP TONS OF POINTS PLEASE BRAINIEST IF CORRECT!!!!!!
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!