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Vesna [10]
3 years ago
15

Please help me on this!

Physics
1 answer:
Luda [366]3 years ago
4 0

Answer:

c or b

Explanation:

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If potential energy is at point A is 12 joules, what is the potential energy at B ?
deff fn [24]

Answer:

incomplete information

Explanation:

Where is diagram? no point A and point B given

7 0
3 years ago
A frequency generator sends a 550 Hz sound wave through both water and ice. What is the difference in wavelength between the wav
viva [34]
3.1m is the answer your looking for
5 0
3 years ago
An 18-mm-wide diffraction grating has rulings of 710 lines per millimeter. monochromatic light of wavelength 506 nm wavelength i
aliina [53]
W= 18*10^-3m 
N= 18*710 ( because you have 710 slits per mm ) = 12780 
lambda = 506*10^-9 

The first step is to workout d. 
d = w/N 
d =18*10^-3m/12780 
d =1.41*10^-6m 

The second step is to work out the maximum number of m. 
Since sin (theta) = less than 1, then m*lambda/d = less then 1,
therefore m= less than d/lambda 
( I know thats confusing but trust me ) 
so m is less than 1.41*10^-6m/506*10^-9 
= 2.7 
Therefore use m = 2 

Lastly put it all into the formula
dsin (theta) = m*lambda so:
theta = sin^-1(m*lambda/d) 
theta = sin^-1(2*506*10^-9/1.41*10^-6m) 
theta = 45.95 degrees or 46 degrees
7 0
4 years ago
Poverty and backwardness are also considered as the cause of rapid population growth. Why????
alexandr402 [8]

because poor and people of back places may not have enough knowledge about contraceptive devices and may not have enough money to buy it.That's why poverty and backwardness are considered to be a cause of population growth

6 0
3 years ago
A 70kg skier moving at 5 m/sec down a slope what is the skier’s momentum
olga2289 [7]

<u><em>Answer:</em></u>

Momentum of the skier is 350 Kg.m/sec

<u><em>Explanation:</em></u>

<u>Momentum of a body can be calculated using the following rule:</u>

P = m * v

<u>where:</u>

P is the momentum of the body

m is the mass of the body given as 70 Kg

v is the velocity of the body given as 5 m/sec

<u>Substitute with the givens in the above rule to get the momentum of the skier as follows:</u>

P = m * v

P = 70 * 5

P = 350 Kg.m/sec

Hope this helps :)

4 0
3 years ago
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