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3 years ago

12

List what sources of uncertainty go into calculating the wavelength of the laser (no explanation necessary here). (b) Accurately

report the uncertainties for these quantities. (c) Explain which of these contributes the most to the final uncertainty on the laser wavelength

1 answer:

laiz [17]3 years ago

7 0

Answer:

thanks for da 5points hoi

Explanation: thanks dawg

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Ivan

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2 years ago

A has the magnitude 14.4 m and is angled 51.6° counterclockwise from the positive direction of the x axis of an xy coordinate sy

Ad libitum [116K]

Answer:

Ã in unit vector notation = 12.26485i + 7.54539j

B in unit vector notation = 16.3516i + 3.11529j

Explanation:

The detailed steps and calculation is shown in the attachment.

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3 years ago

If the pressing force on the slidding surfaces is greater then friction will be

Tema [17]

Answer:

Kinetic friction is lesser than limiting friction. Two surfaces are rubbed together, first with a smaller force and then with a greater force.

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3 years ago

a car travelling at 50km/h from rest covers a distance of 10km in 40minutes. Calculate the acceleration

Margarita [4]

Answer:

$9.67\cdot 10^{-3}m/s^2$

Explanation:

We can solve the problem by using the following suvat equation:

$v^2-u^2=2as$

where

v is the final velocity

u is the initial velocity

a is the acceleration

s is the displacement

For the car in this problem:

u = 0 (it starts from rest)

$v=50 km/h \cdot \frac{1000}{3600}=13.9 m/s$ is the final velocity

s = 10 km = 10 000 m is the displacement

Solving for a, we find:

$a=\frac{v^2-u^2}{2s}=\frac{13.9^2}{2(10000)}=9.67\cdot 10^{-3}m/s^2$

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3 years ago

Which of the following holds true for volume if the temperature of a given amount of gas increases and pressure remains constant

svlad2 [7]

D. Volume will increase
Volume and temperature are directly proportional for a gas.

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3 years ago

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