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Yuki888 [10]
3 years ago
13

A student conducts an experiment to determine how the temperature of water affects the time for sugar to dissolve. In each trial

, the
student uses a different amount of water and a different temperature of water
What is wrong with this experimental design?
O The student needs to perform more trials.
O The student does not have a dependent variable.
The student changed more than one independent variable.
The student did not change enough independent variables.
Physics
1 answer:
Slav-nsk [51]3 years ago
4 0

Answer:

DGFGDFDDF

Explanation: CALL FBI

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Ksju [112]

Answer: 0.432kgm/s

Explanation:

Momentum of a body is defined as the product of the mass (m) of the body and its velocity (v).

Momentum = Mass × Velocity

Given mass = 0.16kg and velocity = 2.7m/s

Substituting the datas into the formula,

Momentum = 0.16×2.7

Momentum = 0.432kgm/s

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3 years ago
Subtract the following and give the answer using significant figures 3.400-0.7591
CaHeK987 [17]

Answer:

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Explanation:

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3 years ago
The distance between the ruled lines on a diffraction grating is 1900 nm. The grating is illuminated at normal incidence with a
SashulF [63]

Answer:

3.28 degree

Explanation:

We are given that

Distance between the ruled lines on a diffraction grating, d=1900nm=1900\times 10^{-9}m

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\lambda_1=700nm=700\times 10^{-9}m

We have to find  the angular width of the gap between the first order spectrum and the second order spectrum.

We know that

\theta=sin^{-1}(\frac{m\lambda}{d})

Using the formula

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\theta=21.62^{\circ}

Now, m=2

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\theta_2=24.90^{\circ}

\Delta \theta=\theta_2-\theta_1

\Delta \theta=24.90-21.62

\Delta \theta=3.28^{\circ}

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6 0
3 years ago
The crust, mantle, asthenosphere, and core are all parts of Earth’s
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Geosphere. The geosphere includes the geology that makes up the earth. The crust, mantle, asthenosphere, and core are all included.
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