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2 years ago

Help me with this please

Physics

1 answer:

creativ13 [48]2 years ago

4 0

Answer:

i dont understand, can you put it in word form please.

Explanation:

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A small ball is attached to one end of a rigid rod with negligible mass. The ball and the rod revolve in a horizontal circle wit

castortr0y [4]

Answer:

mass of the ball will be 1 kg

Explanation:

We have given force F = 0.5 N

This force must be equal to the centripetal force for the ball to revolve in the circle

So $F=F_C=0.5N$

Centripetal acceleration is given as $a_c=0.5m/sec^2$

We have to calculate the mass of the ball

We know that force is given by

$F_C=ma_c$

So $0.5=m\times 0.5$

m = 1 kg

So mass of the ball will be 1 kg

5 0

3 years ago

What is the force between two proton’s that are 0.005m apart?

Jet001 [13]

Answer:

Force, $F=9.21\times 10^{-24}\ N$

Explanation:

Distance between proton is 0.005 m

It is required to find the force between two protons. Protons have of positive charge of $1.6\times 10^{-19}\ C$ . Two protons will have a force of repulsion between them. The force is given by :

$F=\dfrac{kq^2}{r^2}\\\\F=\dfrac{9\times 10^9\times (1.6\times 10^{-19})^2}{(0.005)^2}\\\\F=9.21\times 10^{-24}\ N$

So, the force between two protons is $9.21\times 10^{-24}\ N$ .

7 0

3 years ago

The energy of a photon is proportional to its a) amplitude. d) wave number, k-2m/A c) velocity. b) frequency

Scilla [17]

Answer:

Frequency

Explanation:

Photons are the packet of energy. They are massless and chargeless particles. They travel in the vacuum with the speed of light. The energy of photon is given by :

$E=h\nu$

Where

h = Planck's constant

$\nu$ = frequency of photon

Or $E=\dfrac{hc}{\lambda}$

c = speed of light

$\lambda$ = wavelength of photon

From the above equation, it is clear that the energy of photon is directly proportional to its frequency.

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3 years ago

A bicyclist moves along a straight line with an initial velocity vo and slows downs. Which of the following the best describes t

xeze [42]

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3 years ago

A tool industry characterized by the appearance of hand axes, a bifacial type of blade.

marshall27 [118]

The stone tool industry being described is the Acheulean. These tools are characterized by hand axes and bifacial blades and were made by many different species of Homos, including Homo erectus and early Homo sapiens.

7 0

3 years ago