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madreJ [45]
4 years ago
13

What kind of mirrors are typically used for security purposes?

Physics
1 answer:
fredd [130]4 years ago
6 0

Answer:

CONVEX

Explanation:

BECOZ IT HELPS TO GET A WIDER VIEW

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A 12 kg bowling ball would require what force to accelerate it down an alley at a rate of 2.5 m/s ^ 2
alisha [4.7K]

Answer:

hi

Explanation:

hiijjjjjjjjjjjjjjj

8 0
3 years ago
Heat is added to an element causing the atoms to bounce back and forth in the molecule. This is an example of which type of moti
lisabon 2012 [21]

Answer:

Vibrational motion

Explanation:

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3 years ago
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Faça uma redação sobre '' A luta das mulheres brasileiras pelos seus direitos ''
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3 years ago
A 200 g air-track glider is attached to a spring. The glider is pushed 10.0 cm against the spring, then released. A student with
fiasKO [112]

Answer:

5.5N/m

Explanation:

Calculation for What is the spring constant

First step is to calculate the time period

T = 12 second/10

T = 1.2 second

Now let calculate the spring constant using this formula

k=4π²m/T²

Where,

m=0.2kg

T=1.2second

k represent spring constant=?

Let plug in the formula

k=4π²×0.2kg/(1.2)²

k=39.48×0.2kg/1.44

k=7.90/1.44

k=5.48N/m

k=5.5N/m ( Approximately)

Therefore the spring constant will be 5.5N/m

4 0
3 years ago
A laser shines violet light with a frequency of 703 thz onto the metal with a threshold frequency of 295 thz, what is the kineti
hram777 [196]

The kinetic energy of the ejected electrons will be 2782.5 ×10⁻²² eV.

<h3>What is threshold frequency?</h3>

The threshold frequency of incoming radiation is the lowest frequency at which photoelectric emission or electron emission is impossible.

The threshold frequency is the light frequency that causes an electron to dislodge and emit from the metal's surface.

From the photoelectric effect, the equation obtained as;

\rm  hv=hv_0+KE\\\\ KE=h(v-v_0)\\\\ KE=6.625 \times 10^{-34}(702-282)Hz \\\\ KE= 6.625 \times 10^{-34}\times 420 \times 10^{12} \ Hz \\\\ KE=2782 .5 \times 10^{-22} \ eV

Hence,the kinetic energy of the ejected electrons will be 2782.5 ×10⁻²² eV.

To learn more about the threshold frequency, refer to the link;

brainly.com/question/2499414

#SPJ1

3 0
2 years ago
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