All categories

4 years ago

How can I feel pain when I hit a table with my bare hands (Physics)

Physics

1 answer:

Sidana [21]4 years ago

6 0

When your hand hits the table the table will vibrate and your hand will be numb for two to three seconds

You might be interested in

In one of the classic nuclear physics experiments at the beginning of the 20th century, an alpha particle was accelerated toward

anygoal [31]

Answer:

$3.95 \times 10^{-14}m$

Explanation:

We are given that

Charged on alpha particle=q=2e= $2\times 1.6\times 10^{-19} C$

Where $e=1.6\times 10^{-19} C$

Initial kinetic energy=K.E=5.76 MeV= $5.76\times 10^6\times 1.6\times 10^{-9} C$

$1 Me V=10^6\times 1.6\times 10^{-19} V$

Z=79

Charge on protons= $q'=79\times 1.6\times 10^{-19} C$

We have to find the closeness of alpha particle to the gold nucleus before being turned around.

Initial kinetic energy=Final potential energy

$5.76\times 10^6\times 1.6\times 10^{-9}=\frac{Kq_1q_2}{r}$

Where $k=9\times 10^9$

$r=\frac{9\times 10^9\times 79\times 1.6\times 10^{-19}\times 2\times 1.6\times 10^{-19}}{5.76\times 10^6\times 1.6\times 10^{-9}}$

$r=3.95\times 10^{-14}m$

7 0

4 years ago

At the focal point of a converging lens, the object:

rewona [7]

Answer:

D) Image cannot be seen

Explanation:

As we know by lens formula

$\frac{1}{d_i} + \frac{1}{d_o} = \frac{1}{f}$

now we know that

object is placed at the focal point of lens

$d_o = f$

so we will have

$\frac{1}{d_i} = 0$

so the image will form at infinite

so image will be at infinite distance from the lens

so it cannot be seen

8 0

4 years ago

Read 2 more answers

Which type of electromagnetic radiation is used to keep food warm?

n200080 [17]

Answer:

A. infrared

Explanation:

Heat lamps used to keep foods warm are infrared on the light spectrum

7 0

3 years ago

Two objects are moving at equal speed along a level, frictionless surface. the second object has twice the mass of the first obj

Zarrin [17]

first object gors highest

second object goes lowest.

5 0

3 years ago

Liquefication occurs when

alexandr402 [8]

Answer: Liquefaction occurs when the structure of a loose, saturated sand breaks down due to some rapidly applied loading.

As the structure breaks down, the loosely-packed individual soil particles attempt to move into a denser configuration. Liquefaction most often occurs when three conditions are met:

loose, granular sediment or fill

saturation by groundwater

strong shaking

5 0

3 years ago

Read 2 more answers