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
Pie
4 years ago
9

What is an example of a simple machine? A. an electric light B. a small buzzer

Physics
2 answers:
miskamm [114]4 years ago
8 0
A screwdriver: Third class lever.
julia-pushkina [17]4 years ago
4 0

Answer:

A screwdriver

Explanation:

The devices that are used to enhance of modify the force in order to perform work. Some of the example of simple machines are liver, wheel and axle, etc. A screwdriver is an example of wheel and axle. It consists of two circular and cylindrical objects that rotates about a common axis.

Hence, screwdriver is an example of simple machine.

You might be interested in
A red laser from a physics lab is marked as producing 632.8 nm light. When light from this laser falls on two closely spaced sli
goblinko [34]

Given Information:  

Wavelength of the red laser = λr = 632.8 nm

Distance between bright fringes due to red laser = yr = 5 mm

Distance between bright fringes due to laser pointer = yp = 5.14 mm

Required Information:  

Wavelength of the laser pointer = λp = ?

Answer:

Wavelength of the laser pointer = λp = ?

Explanation:

The wavelength of the monochromatic light can be found using young's double slits formula,

y = Dλ/d  

y/λ = D/d

Where

λ is the wavelength

y is the distance between bright fringes.

d is the double slit separation distance

D is the distance from the slits to the screen

For the red laser,

yr/λr = D/d

For the laser pointer,

yp/λp = D/d

Equating both equations yields,

yr/λr = yp/λp

Re-arrange for λp

λp = yp*λr/yr

λp =  (5*632.8)/5.14

λp = 615.56 nm

Therefore, the wavelength of the small laser pointer is 615.56 nm.

3 0
3 years ago
A 1kg pool ball travels to the right at 2m/s and hits another stopped pool ball bounces back to the left at 1m/s what is the vel
Burka [1]
Ptotal=Ptotal —> m1v1+m2v2=m1v1’+m2v2’ —> (1kg)(2m/s)+(1kg)(0m/s)=(1kg)(-1m/s)+(1kg)(v2’) —> v2’=3m/s

answer: v=3m/s
5 0
3 years ago
How can technology improve peoples chances of surviving a tornado?
BigorU [14]

Answer:

b

Explanation:

The warning would alert the people and give them time to prepare for the tornado. like getting food and going in bunkers

Brainliest awnser?

8 0
3 years ago
You hold a small metal ball of mass a height above the floor. You let go, and the ball falls to the floor. Choose the origin of
baherus [9]

Answer:

yᵢ = h

vᵢᵧ = 0

Explanation:

Let initial velocity = u

     final velocity = v

     height = h

     acceleration due to gravity = g

Therefore fro equation of motion,

v^{2}=u^{2}+2gh

Here initial velocity is zero.

Hence, v^{2}=2gh

v = \sqrt{2gh}

but since it points downward and you positive is taken in the up direction

v = -\sqrt{2gh}

5 0
4 years ago
A 42.6kg lamp is hanging from wires as shown in figure.The ring has negligible mass. Find tensionsT1, T2,T3 if the object is in
IRISSAK [1]

Answer:

T1 = 417.48N

T2 = 361.54N

T3 = 208.74N

Explanation:

Using the sin rule to fine the tension in the strings;

Given

amass = 42.6kg

Weight = 42.6 * 9.8 = 417.48N

The third angle will be 180-(60+30)= 90 degrees

Using the sine rule

W/Sin 90 = T3/sin 30 = T2/sin 60

Get T3;

W/Sin 90 = T3/sin 30

417.48/1 = T3/sin30

T3 = 417.48sin30

T3 = 417.48(0.5)

T3 = 208.74N

Also;

W/sin90 = T2/sin 60

417.48/1 = T2/sin60

T2 = 417.48sin60

T2 = 417.48(0.8660)

T2 = 361.54N

The Tension T1 = Weight of the object = 417.48N

8 0
3 years ago
Other questions:
  • Which statement is true?
    10·1 answer
  • The Boston Tea Party was an act of civil disobedience by those who believed the Crown to be abusing its power to do what?
    7·1 answer
  • Block A rests on a horizontal tabletop. A light horizontal rope is attached to it and passes over a pulley, and block B is suspe
    13·1 answer
  • What happens to the velocity of a sound wave in air if the temperature of the air increases
    11·1 answer
  • When a hot and cold object are placed in contact, the hot one loses energy. Does this violate energy conservation? Why or why no
    6·1 answer
  • Can a net force be applied to an object and still have the object maintain constant speed. explain
    5·1 answer
  • Rank each pendulum on the basis of the initial gravitational potential energy (before being released) of the pendulum-Earth syst
    9·1 answer
  • Two positive charges q1 = q2 = 2.0 μC are located at x = 0, y = 0.30 m and x = 0, y = -0.30 m, respectively. Third point charge
    5·1 answer
  • Can you describe 2 amazing things in science that you have learned about? It can be anything science related, volcanoes, compute
    12·1 answer
  • A 4kg block moving right at 6 m/s collides elastically with a 2kg block moving right at 3 m/s find their final velocity
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!