3 years ago

The electron has the positron as its antiparticle. A True B False

Physics

2 answers:

Sphinxa [80]3 years ago

8 0

The answer would be true

Gelneren [198K]3 years ago

8 0

The answer would be true. So true tbh

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Holding onto a tow rope moving parallel to a frictionless ski slope, a 70.1 kg skier is pulled up the slope, which is at an angl

lara [203]

Answer:

given,

mass of the skier = 70.1 Kg

angle with horizontal, θ = 8.6°

magnitude of the force,F = ?

a) Applying newton's second law

$m g sin\theta - F_{rope} = ma$

velocity is constant, a = 0

$m g sin\theta - F_{rope} =0$

$F_{rope} = m g sin\theta$

$F_{rope} = 70.1\times 9.8\times sin 8.6^0$

$F_{rope}= 102.73\ N$

b) now, when acceleration, a = 0.135 m/s²

$F_{rope}-m g sin\theta = ma$

velocity is constant, a = 0.135 m/s₂

$F_{rope} = m g sin\theta+ma$

$F_{rope} = 70.1\times 9.8\times sin 8.6^0+70.1\times 0.135$

$F_{rope}= 112.19\ N$

7 0

3 years ago

Based on Archimedes' principle, the greatest buoyant force an object can experience in water is determined by which quantity?

kicyunya [14]

I think it the objects mass

6 0

3 years ago

if the accuracy in measuring the position of a particle increases, what happens to the accuracy in measuring its velocity?

erastova [34]

The answer to this question should be: The accuracy in measuring its velocity decreases

Hope I helped

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3 years ago

Which quantity best describes this description? Justin walks at 3 miles per hour north, and then speeds up to 4 miles per hour.

prisoha [69]

Personally, I agree with your answer, namely that the likely-intended event happening here is one of acceleration. Having said that, I also want to add: it pains me to see this type of wording because, clearly, it is vague and only invites confusion of the type you are talking about.

Good luck!

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3 years ago

What is kinetic energy of 6 kg bowling ball if it is going 6.1 m/s

weqwewe [10]

Answer:111.63 joules

Explanation:

Kinetic energy=(massx(velocity)^2)/2

Kinetic energy=(6×(6.1)^2)/2

Kinetic energy=(6×37.21)/2

Kinetic energy=223.26/2

Kinetic energy=111.63 joules

7 0

3 years ago