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2 years ago

The amount of kinetic energy a moving object has depand on its

Physics

2 answers:

UNO [17]2 years ago

7 0

Answer:

the kinetic energy of a moving object has dependence on its mass and its velocity.

Explanation:

Above expression indicates that the kinetic energy is directly proportional to the mass of the object and to the square of the velocity of the object. Thus, the kinetic energy of a moving object has dependence on its mass and its velocity.

hammer [34]2 years ago

4 0

Yeah I’m also learning about kinetic energy :/

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If a girl is running along a straight road with a uniform velocity 1.5 m /s find her acceleration

Phoenix [80]

Answer:

As velocity is uniform then acceleration will be zero.

Explanation:

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2 years ago

A man wishes to row the shortest possible distance from north to south across a river which is flowing at 2 km/hr from the east.

sweet-ann [11.9K]

From the diagram we have that

$sin\theta = \frac{2}{4}$

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3 years ago

Calculate the de Broglie wavelength of an electron accelerated from rest through a potential difference of (a) 100 V, (b) 1.0 kV

forsale [732]

Answer:

(a) $\lambda=1.227\ A$

(b) $\lambda=0.388\ A$

Explanation:

Given that,

(a) An electron accelerated from rest through a potential difference of 100 V. The De Broglie wavelength in terms of potential difference is given by :

$\lambda=\dfrac{h}{\sqrt{2meV} }$

Where

m and e are the mass of and charge on an electron

On solving,

$\lambda=\dfrac{12.27}{\sqrt{V} }\ A$

V = 100 V

$\lambda=\dfrac{12.27}{\sqrt{100} }\ A$

$\lambda=1.227\ A$

(b) V = 1 kV = 1000 V

$\lambda=\dfrac{12.27}{\sqrt{V} }\ A$

$\lambda=\dfrac{12.27}{\sqrt{1000} }\ A$

$\lambda=0.388\ A$

$\lambda=\dfrac{12.27}{\sqrt{10^5} }\ A$

$\lambda=0.038\ A$

Hence, this is the required solution.

7 0

2 years ago

PLEASE ANSWER FAST!!! WILL GIVE BRAINLIEST!!!!!

Alex17521 [72]

I would go with Segment D.

5 0

2 years ago

Read 2 more answers

The nucleus of most atoms is composed of which of the following sub-atomic particles? (A) tightly packed neutrons

solmaris [256]

Answer:

(B) tightly packed protons and neutrons

Explanation:

Nucleus of any atom is the dense central part of any atom.
It consists of two sub-atomic particle namely proton and neutron.
These sub-atomic parts are tightly packed in nucleus which makes the nucleus dense .
This dense nucleus is responsible for most of the mass of atom.
The atomic mass for any atom is decided by sum of the mass of proton and neutron

Thus, correct answer is

(B) tightly packed protons and neutrons

4 0

2 years ago