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Oliga [24]
3 years ago
5

I do not know where to start.

Physics
1 answer:
irakobra [83]3 years ago
4 0
Underline the words then eliminate the ones that arent part of the problem!
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3. Write any two types of force.​
Lerok [7]

Answer:

An <u>applied force</u> is a force that is applied to an object by a person or another object. If a person is pushing a desk across the room, then there is an applied force acting upon the object. The applied force is the force exerted on the desk by the person.

A <u>friction force</u> is the force exerted by a surface as an object moves across it or makes an effort to move across it. There are at least two types of friction force - sliding and static friction. Though it is not always the case, the friction force often opposes the motion of an object. For example, if a book slides across the surface of a desk, then the desk exerts a friction force in the opposite direction of its motion. Friction results from the two surfaces being pressed together closely, causing intermolecular attractive forces between molecules of different surfaces. As such, friction depends upon the nature of the two surfaces and upon the degree to which they are pressed together. The maximum amount of friction force that a surface can exert upon an object can be calculated using the formula below:

F_{frict} = µ • F_{norm}

8 0
3 years ago
one group of atoms on the periodic tables are known as "noble gases". why have they been given this name?​
maria [59]
This group is called “noble gases” because they do not react with other elements. This is because they have a full valence shell.
8 0
3 years ago
1. What is the wavelength of a sound wave with a frequency of 50 Hz, if the Speed of sound is 343 m/s.
marshall27 [118]

1.6.86

2.59.04

3.3

Thats the answer I think

7 0
3 years ago
What is the minimum uncertainty in the vertical component of the momentum of each photon in the beam after the photon has passed
RoseWind [281]
<h3><u>Minimum uncertainty in the vertical component of the momentum of each photon:</u></h3>

According to Heisenberg's Uncertainty principle, both the “position and velocity of the particle” cannot be measured exactly at the same time. The momentum of the particle equals the product of its mass and velocity. And it can be inferred that the “product of the uncertainties” in the “momentum and the position” of a particle equals \frac{h}{4 \pi}.  

Immediately after the photon has passed through the slit, given particle has a momentum uncertainty of \Delta P_{x} and its position uncertainty is \Delta x, then the minimum uncertainty in its momentum will be

\Delta P_{x} . \Delta x \geq \frac{h}{4 \pi}

8 0
3 years ago
A go kart is traveling at a constant 13.8 meters per second around a horizontal circular track with a radius of 42.0 meters. The
Ivan

Answer:

648.40N

Explanation:

Centripetal acceleration is the acceleration of an object around a circular path. Centripetal for e acting on the combined mass is expressed as:

F = ma

F = mv²/r

m is the mass of the object = 143kg

v is the linear velocity = 13.8m/s

r is the radius = 42.0m

Substitute the given parameters into the formula;

F = 143*13.8²/42

F = 27,232.92/42

F = 648.40N

Hence the magnitude of the centripetal force acting on the combined mass is 648.40N

4 0
3 years ago
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