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
Reika [66]
2 years ago
5

How do simple machines make work easier?

Physics
2 answers:
miss Akunina [59]2 years ago
8 0
It is A: They add energy to the work

Mrrafil [7]2 years ago
3 0

Answer:  D.  They increase the distance over which a force is applied.

Explanation:

Simple machines are basic mechanical devices which make our work easier like lever, pulley, wheel and axle, inclined plane, wedge and screw. The magnitude of the force or direction is altered using a simple machine. They increase the distance over which a force is applied. They use mechanical advantage to increase the magnitude of the force.

You might be interested in
identical springs are placed side-by-side (in parallel), and connected to a large massive block. The stiffness of the 43-spring
allsm [11]

Answer:

The stiffness of one of the individual spring is 390 N/m.

Explanation:

It is given that 43 identical springs are placed side-by-side and connected to a large massive block.

The stiffness of the 43 spring combination is 16770 N/m

We need to find the stiffness of one of the individual springs. Let k is the stiffness of one spring. The effective spring stiffness of this width spring is given by :

K=N\times k

k=\dfrac{K}{N}

k=\dfrac{16770\ N/m}{43}

k = 390 N/m

So, the stiffness of one of the individual spring is 390 N/m. Hence, this is the required solution.

6 0
3 years ago
Review. (b) What is the mass difference?
nignag [31]

The mass difference is in between the two is equivalent to the binding energy of the nucleus .

<h3>What is meant by mass difference? </h3>

Δm be the mass difference is defined as the difference between the mass of the nucleus and the total mass of the individual nucleons that comprise it.

Binding energy is the energy required to split the nucleus of an atom into neutrons and protons, while mass defect is the difference between the predicted mass and the actual mass of the nucleus of an atom .

The mass difference is difference between the mass of nucleus and the Total mass of the individual nucleons that make it up.

∆m = final mass - initial mass.

To learn more about mass refer to:

brainly.com/question/19694949

#SPJ4

8 0
1 year ago
What would cause a beam of light to increase in wavelength and bend away from the normal? A) Passing from a round glass into a s
uranmaximum [27]

Answer:

i think it A sorry if i get it wrong but it should be A

Explanation:

8 0
2 years ago
Read 2 more answers
A skier (m=59.0 kg) starts sliding down from the top of a ski jump with negligible friction and takes off horizontally. If h = 3
marissa [1.9K]

Answer:

35.20 m

Explanation:

By the law of conservation of energy we have,

mg(H-h)=\frac{1}{2}mv^2

g(H-h)=\frac{1}{2}v^2

\Rightarrow H=\frac{v^2}{2g}+h

where m= mass of the skier, h= 3.00 m

D= horizontal distance=13.9 m

H= maximum height attained

Also, the horizontal distance covered by the skier is

D=vt

=v\frac{2g}{h}

\Rightarrow v^2=\frac{gD^2}{2h}

thus, height H in terms of D  is given by

H=\frac{D^2}{2h}+h

H=\frac{13.9^2}{2\times3}+3

H=35.20 m

4 0
3 years ago
Consider a simple ideal Rankine cycle with fixed turbine inlet conditions. What is the effect of lowering the condenser pressure
mr Goodwill [35]

Answer:

The effect of lowering the condenser pressure on different parameters is explained below.

Explanation:

The simple ideal Rankine cycle is shown in figure.

Effect of lowering the condenser pressure on

(a). Pump work input :- By lowering the condenser pressure the pump work increased.

(b) Turbine work output :- By lowering the condenser pressure the turbine work increased.

(c). Heat supplied :- Heat supplied increases.

(d). Heat rejected :- The heat rejected may increased  or decreased.

(e). Efficiency :- Cycle  efficiency is increased.

(f). Moisture content at turbine exit :- Moisture content increases.

8 0
2 years ago
Other questions:
  • Why are objects that fall near Earth's surface rarely in free fall?
    11·1 answer
  • Distinguish between concave mirror and convex mirror ​
    7·1 answer
  • 15kg cat initially traveling +2m/s accelerates at +2m/s2 for 5 seconds how much kinetic energy does it again?
    15·1 answer
  • Which species below is an ionic compound?<br> A) NaF <br> B) CO2 <br> C) AlAs <br> D) OF2
    7·2 answers
  • A.) A hardworking ant must supply 0.0650 N to pull a piece of fruit at constant velocity 8.40 cm up the colony's ant hill. If th
    10·1 answer
  • Suppose that a block is pulled 16 meters across a floor. What amount of work is done if the force used to drag the block is 22 N
    5·2 answers
  • An object is moving in the absence of a net force. Which of the following best describes the object’s motion? A. The object will
    15·1 answer
  • How does molten rock and gas leave the volcano
    10·1 answer
  • What was the experiment carried out by Hershel &amp; Ritter.
    13·1 answer
  • After students complete a scientific investigation, why is it important for the class to discuss the results obtained by each la
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!