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3 years ago

Which other type of electromagnetic wave will strip away electrons from the zinc plate? And why?

2 answers:

8 0

In short, when light illuminates a piece of metal, the light kicks off electrons from the metal’s surface and these electrons can be detected as a change in the electric charge of the metal or as an electric current. Hence the name: photo for light and electric for the current. The explanation behind this simple phenomenon opened the door to revolutionary modern physics concepts regarding the composition of light, quantum mechanics, and what is now referred to as the “wave-particle duality” of nature. The wave-particle duality of nature is perhaps one of the greatest mysteries of our universe and a very interesting philosophical subject! Your goal in this lab is to reproduce the photoelectric effect for yourselves and to understand how it demonstrates the particle behavior of light.

photoshop1234 [79]3 years ago

8 0

Answer:

C) X-ray radiation will strip away electrons because it has a shorter wavelength and therefore more energy

Explanation:

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If a 50 N block experiences a force of kinetic friction of 11 N

ankoles [38]

Answer:

F(friction) = μ M g definition of frictional force

μ = F / (M g) = 11 N / 50 N = .22

4 0

2 years ago

1. If you walk 10 blocks North, then turn around and walk 4 Blocks to the South before stopping to answer your phone, then turn

icang [17]

Answer: 13 blocks

Explanation:10-4+7=13

4 0

3 years ago

A 200.0 g block rests on a frictionless, horizontal surface. It is pressed against a horizontal spring with spring constant 4500

kenny6666 [7]

Answer:

6 m/s

Explanation:

Given that :

mass of the block m = 200.0 g = 200 × 10⁻³ kg

the horizontal spring constant k = 4500.0 N/m

position of the block (distance x) = 4.00 cm = 0.04 m

To determine the speed the block will be traveling when it leaves the spring; we applying the work done on the spring as it is stretched (or compressed) with the kinetic energy.

i.e $\frac{1}{2} kx^2 = \frac{1}{2} mv^2$

$kx^2 = mv^2$

$4500* 0.04^2 = 200*10^{-3} *v^2$

$7.2 =200*10^{-3}*v^{2}$

$v^{2} =\frac{7.2}{200*10^{-3}}$

$v =\sqrt{\frac{7.2}{200*10^{-3}}}$

v = 6 m/s

Hence,the speed the block will be traveling when it leaves the spring is 6 m/s

5 0

3 years ago

The percentage of water vapor in the air compared to the maximum amount of water vapor that air can contain at a particular temp

natali 33 [55]

Answer:

Relative humidity %

Explanation:

The relative humidity is the percentage of the water vapor content at a particular temperature and pressure to the maximum amount of water vapor content the air can hold at those conditions.
When the relative humidity of the air becomes 100% then there occurs precipitation on the earth from the atmosphere (specifically troposphere, which accounts for the weather changes).
We might have experienced excessive sweating even on a relatively less hotter day of a summer which is on account of increased relative humidity.

5 0

3 years ago

With what speed must m1 rotate in a circle of radius r if m2 is to remain hanging at rest?

11Alexandr11 [23.1K]

Velocity =2 pie*r/t
distance = 2 (pie) r
accelaretion =distance/t2
f=m*v2/r
v=square root of Fr/m

5 0

3 years ago