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
Blizzard [7]
3 years ago
13

Was work done on a book that fell from a desk to the floor? If so, what force was involved?

Physics
2 answers:
IgorLugansk [536]3 years ago
7 0
Sure ! 
The work is (weight of the book) x (height of the desk above the floor).
The force (weight) is the result of gravity.
It was gravity that did the work.
jonny [76]3 years ago
7 0
Potential i think.
G=m*g
where g=9.81 N
You might be interested in
Based on the idea of isostasy, which of these statements is NOT correct?
Wewaii [24]

The formation ice sheets cause the Earth's surface to sink so much that when the ice melts, the crust and mantle does not rebound.

Explanation:

The above-mentioned statement is the only false statement

During the Ice ages, large continental parts were covered under thick ice sheets. This imposed a superincumbent additional load on the Earth's crust.

Isostasy refers to the balance that exists between parts of Earth's mantle and crust.  Isostatic adjustments are a common phenomenon.  As a result of isostatic adjustments, several parts of the world have risen by as much as 900 feet as an adjustment to superincumbent load since ice ages. E.g. Parts of Scandinavian countries have witnessed these activities and also undergoing this process.

7 0
3 years ago
Select all that apply.
Sloan [31]

The first and third choices on the list will attract, because UNlike poles are facing across the gap.

Choice #1: . . . [S]-----[N] . . . [S]-----[N]

Choice #3: . . . [N]-----[S] . . . [N]-----[S]

8 0
3 years ago
Read 2 more answers
The force that accelerates objects towards earth
Anastasy [175]

The answer is Gravity.

8 0
3 years ago
Read 2 more answers
in oder to reduce the amount of energy lost due to heat flow, electricity is deliverd to our homes useing
Serhud [2]
High voltage transmission wires. Electrical lines you see outside of your home and basically everywhere you go.
4 0
4 years ago
Two identical positive charges exert a repulsive force of 6.2 × 10−9 n when separated by a distance 3.7 × 10−10 m. calculate the
In-s [12.5K]
The electrostatic force between two charges is given by
F=k \frac{q_1 q_2}{r^2}
where
k is the Coulomb's constant
q1 and q2 are the two charges
r is their separation

In this problem, the two charges are identical, so we can call them q1=q2=q, and the formula becomes
F=k \frac{q^2}{r^2}

Since we know the magnitude of the force and the separation between the two charges, we can re-arrange the equation to find the value of each charge:
q= \sqrt{ \frac{Fr^2}{k} } = \sqrt{ \frac{(6.2 \cdot 10^{-9} N)(3.7 \cdot 10^{-10}m)^2}{8.99 \cdot 10^9 Nm^2C^{-2}} }=3.07 \cdot 10^{-19} C
5 0
3 years ago
Other questions:
  • An object with a mass of 2.0 kg is accelerated at 5.0 m/s/s. What is the net force that causes this acceleration?
    8·2 answers
  • How is electromagnetic waves useful for cooking food
    10·1 answer
  • An internal combustion engine uses fuel, of energy content 44.4 MJ/kg, at a rate of 5kg/h. If the efficiency is 28%, determine t
    12·1 answer
  • What are tree things that apply to relative dating
    14·1 answer
  • High tide are experienced 12 hours apart for a certain coastline. Which of the following best explains the reason for this pheno
    15·1 answer
  • To sterilize a 53.0 g glass baby bottle, we must raise its temperature from 25.0°C to 92.0°C. How much heat transfer (in J) is r
    13·1 answer
  • a 12-kg block is pulled by a string at a 30 degree angle. if the string exerts a 50 n force, the block accelerates at 4.13 m/s2.
    5·1 answer
  • Give 5 examples of inherited variation
    8·2 answers
  • How long will it take a projectile to hit the ground if it is launched at 4.2 m/s off a 12.6 m high platform?
    9·1 answer
  • To maximize the percentage of the power from the emf of a battery that is delivered to a device, what should the internal resist
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!