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
enyata [817]
3 years ago
8

If we want to describe work , we must have what ?

Physics
1 answer:
ivanzaharov [21]3 years ago
4 0
An external force that is being applied in the direction of the displacement
You might be interested in
What is formed in the shape of a long, low land area between hills or mountains?
DENIUS [597]
It is rectangle and it probably is a lake perhaps
3 0
3 years ago
The temperature of a substance during an experiment can be modeled by the function f(x)=−7.5cos(πx30)+31.4 , where f(x) is the t
vekshin1
38.9 degrees celsius
6 0
3 years ago
Read 2 more answers
A student throws a rock horizontally off a 5.0 m tall building. The rock's initial speed is 6.0 m/s. How long will it take the r
Archy [21]

Answer:

The time taken by the rock to reach the ground is 0.569 seconds.

Explanation:

Given that,

A student throws a rock horizontally off a 5.0 m tall building, s = 5 m

The initial speed of the rock, u = 6 m/s

We need to find the time taken by the rock to reach the ground. Using second equation of motion to find it. We get :

s=ut+\dfrac{1}{2}gt^2\\\\5=6t+\dfrac{1}{2}\times 9.8t^2\\\\t=0.569\ seconds

So, the time taken by the rock to reach the ground is 0.569 seconds. Hence, this is the required solution.

5 0
3 years ago
Read 2 more answers
Most metals are not ?
mario62 [17]
C liquid at room temperature  
4 0
3 years ago
A student wants to use a ramp to move boxes into a truck bed that is 3 m high. He has a choice of 2 different ramps. The length
Morgarella [4.7K]

Answer:

The correct option is;

B. 8 m, because he has to apply less force over a greater distance

Explanation:

In the given question, in order for the student to lift the boxes onto the tuck with less amount of force, he applies the principle of Mechanical Advantage

The mechanical advantage is given by the measure by which a force is amplified through the use of a tool

Given that the work done = The force × The distance, we have

F₁ × d₁ = F₂ × d₂, which gives;

d₁/d₂ = F₂/F₁

Where;

F₁ = The input force

F₂ = The output force

d₁ = The input distance

d₂ = The output distance

The Mechanical advantage, MA = d₁/d₂ = F₂/F₁

Therefore, when the input distance is increased the input force will be reduced for a given output force

6 0
3 years ago
Other questions:
  • A joger travels 8.0 kilometers in 1.25 hours what is the average speed?
    8·2 answers
  • Which characteristics can be used to differentiate star systems? Check all that apply.
    13·2 answers
  • Which of these is NOT a type of lever?<br> A. rake<br> B. ramp<br> C. crowbar<br> D. scissors
    7·2 answers
  • Do
    7·1 answer
  • An evacuated tube uses an accelerating voltage of 40 kv to accelerate electrons to hit a copper plate and produce x rays. non-re
    5·2 answers
  • The ratio of the speed of light in a medium to the speed of light in a vacuum is called its ______________ index.
    7·2 answers
  • Velocity vs Time
    11·1 answer
  • It is a cold night around the campfire. Megan is trying to get warm by sitting close to the fire and clutching her mug of hot ch
    11·1 answer
  • you are running out and the first mike takes 10 minutes the second mile takes you 20 minutes this is an example of
    11·2 answers
  • A machine has a mechanical advantage of 5. What force should be applied to the machine to make it apply 3000 N to an object? 0.
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!