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2 years ago

Your friend says an appliance uses energy. How would you correct his statement?

Physics

1 answer:

madreJ [45]2 years ago

3 0

Answer:

Not all appliances run on energy. Some of them run on gas. Some both. It just depends on the age of the appliance, the make of the appliance, and the company who made it.

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Which particle is most likely to interact with your hand? Select one: a. Alpha particle b. Beta particle c. Gamma particle d. Ne

IgorLugansk [536]

Answer:

The correct option is a

Explanation:

The alpha particle has the lowest penetrating power of the trio of alpha, beta and gamma particles and can be stopped by a sheet of paper and hence cannot penetrate a human skin. Beta particle has a higher penetrating power than alpha particle (some of it penetrates the human skin and some do not) while the gamma particle has the highest penetrating power (with all of it penetrating the human skin).

From the above description, it can be deduced that the alpha particle will stay and interact with the hand (because of its low penetrating power) as the remaining particles move through the skin.

4 0

3 years ago

What would happen to the moon if earth stopped exerting the force of gravity on it?

Mila [183]

There are two equal forces of gravity between the Earth and the Moon.
One force pulls the Moon toward the Earth.
The other force pulls the Earth toward the Moon.

If only this gravity suddenly switched off, then the moon would
continue to orbit the Sun, very much as it does now.

If ALL gravity suddenly switched off, then . . .

-- the Moon would stop orbiting the Earth and would sail away, in
a straight line and at the speed it had when gravity disappeared;

-- the Earth would stop orbiting the Sun and would sail away, in
a straight line and at the speed it had when gravity disappeared;

-- all the gases surrounding the Earth ... which we call "air" ... would
start drifting away, and expanding into a giant cloud of gas, and stop
being an atmosphere;

-- the Sun would completely fall apart, expand into a giant cloud of gas,
and stop being a star.

6 0

3 years ago

Read 2 more answers

The system below is in equilibrium, but it begins to slip

jeyben [28]

Answer:

The coefficient of static friction between the 10kg block and the surface is 0.29. Which was calculated by applying newtons first law of motion as it applies to equilibrium situations.

Explanation:

The steps for the solution to this problem can be found in the attachment below. The first thing to do in problems like this is to draw free body diagrams that clearly shows the forces acting of the elements of the system. Next, you apply newtons law(s) of motion as the case may be and then solve for your unknowns. It is easier to resolve the forces acting at a point into their horizontal and vertical components. This makes the solution to the problem easier.

For this solution, the sign convention used assumed towards as positive, downwards as negative, the right as positive and the left as negative. Best wishes.

5 0

3 years ago

determine the gravitational attraction between Earth (6.0 x 10^24 kg) and a 2,500 kg car if the car is 6.38 x 10^6 m from Earth'

Inessa05 [86]

Answer:

The gravitational attraction between Earth and a 2,500 kg car is 24,592.49 N.

Explanation:

The law of universal gravitation, or simply the law of gravity, establishes the force with which two bodies attract each other simply because they have mass. This law was developed by Sir Isaac Newton.

This law describes the gravitational interaction between massive bodies, and establishes a proportional relationship of the gravitational force with the mass of the bodies.

The Universal Law of Gravitation states that all objects attract each other with a force directly proportional to the product of their masses and inversely proportional to the square of the distance between their centers.

This means that any two bodies attract each other with a greater or lesser force depending on their mass is greater or less, and according to the distance between them.

The fundamental formula of the Law of Universal Gravitation is as follows:

$F=\frac{G*m1*m2}{d^{2} }$

Where:

F is the force of attraction between two masses.
G is the universal constant of gravitation (6.673484*10⁻¹¹ N.m²/kg²).
m1 is the mass of one of the bodies.
m2 is the mass of another of the bodies.
d is the distance that separates them.

In this case:

m1: 6*10²⁴ kg
m2: 2,500 kg
d: 6.38*10⁶ m

Replacing:

$F=\frac{6.673484*10^{-11}\frac{N*m^{2} }{kg^{2} } *6*10^{24} kg*2,500 kg}{(6.38*10^{6} m)^{2} }$

Solving you get:

F= 24,592.49 N

The gravitational attraction between Earth and a 2,500 kg car is 24,592.49 N.

4 0

3 years ago

The angle of reflection does not equal the angle of incidence? True or False

leonid [27]

False, it does. Hope this helped!

3 0

2 years ago