PHYSICS MIDDLE SCHOOL

Energia potencial de una pila de 100g colocados sobre una mesa de 68 cm del piso

Answers

Answer 1
Answer:

Answer:

Ep=0.66J

Explanation:

We have to use the formula for potential energy

E_(p)=Mgh

where g is the gravity constant, h is the heigth an M is the mass. By replacing and taking into account the appropriate units (kg and m) we have

100g=0.1kg

68cm=0.68m

E_(p)=(0.1kg)(9.8(m)/(s^(2)))(0.68m)=0.66J

I hope this is useful for you

regards

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Answer: yep

Explanation:

Answer:

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What are two processes that result in rocks being broken down into smaller pieces ?

Answers

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Explain what wave frequency is...

Answers

Wave frequency is the number of waves that pass a fixed point in a given amount of time.

Explanation:

Wave frequency is the number of waves that pass a fixed point in a given amount of time. The SI unit for wave frequency is the hertz (Hz), where 1 hertz equals 1 wave passing a fixed point in 1 second. A higher-frequency wave has more energy than a lower-frequency wave with the same amplitude.

The force of gravity decreases at a constant rate as we move away from a planet like Jupiter. True or false

Answers

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What type of machine is a rake?A.Mechanical Machine
B.Complex Machine
C.Compound Machine
D.Simple Machine

Answers

A rake is a simple machine. Thus, the correct option is D.

What is a Simple machine?

A simple machine is a mechanical device which changes the direction or magnitude of an applied force. In general, these machines can be defined as the simplest mechanisms which uses mechanical advantage also called as leverage to multiply the force. Usually the term refers to the six classical simple machines which were defined by Renaissance scientists including lever, wheel and axle, pulley, inclined plane, wedge, and screw.

A simple machine uses a single applied force to do the work against a single load force or friction. Ignoring the friction losses, the work done on the load force is equal to the work done by the applied force.

Therefore, the correct option is D.

Learn more about Simple machine here:

brainly.com/question/10075890


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D.Simple Machine, is right.

when the box is moving ,it experiences a friction force of 20 N to the left , or toward the mover . what force does the mover need to applying order to keep the box moving to the right at 1 m/s?

Answers

Force = mass * acceleration
F = ma

Force = 20 Newtons
Mass = ?
Acceleration = 1 m/s

Here, we don't need to find the mass. Which is why this is such a tricky question. 

Instead, we need to find the force. 

Of course, we know already that force doesn't necessarily require a direction. 

F = 20 N

The force needed would be 20 Newtons, as said. 

The mover will need 20 newtons
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