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3 years ago

In terms of instrument sensitivity, explain why he choice of wavelength on the colorimeter is important

1 answer:

8 0

Colorimeters function by passing colored light through a specific optical filter. The choice of wavelength on the colorimeter is important in terms of instrument sensitivity since the device gives the most sensitivity which can be used as a test factor in determining the lower detection limit.

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You pull down on a rope to raise a flag on a flag pole which describes why the rope and the flag pole act as a machine

ikadub [295]

Answer: A-they change the direction of the forces

Explanation:

Any device which makes our work simpler is known as a machine. A machine may increase the amount of output force which is determined by its mechanical advantage or a machine changes the direction of the force.

In the given situation the input force acts in the downward direction to pull the rope. The output force acts on the flag being pulled upwards at the other end. Thus, the direction of the forces varies. Correct option is A.

3 0

4 years ago

Three different experiments are conducted that pertain to the oscillatory motion of a pendulum. For each experiment, the length

svetlana [45]

Answer:

Check the explanation

Explanation:

Their is no data provided for the mass and length of pendulum in the picture.but it is very easy to check kinetic energy.KE is mv^2/2, m is the pendulum Bob and v is time dependent ,equation of displacement of SHM is given as x(t)=Asin(wt+∆) where ∆ is the phase angle now v=dX/dt _v=Awcos(wt+∆) and KE= $mA^2.w^2(cos(wt+∆))^2/2,$

Thus w angular frequency of oscillation is√(g/l)

g acceleration due to gravity and l length of pendulum.so KE is same for pendulum having same mass and length otherwise KE expression with time will vary for all other cases.now check if all experiment pendulum have same mass and length otherwise KE will not be same.You can now easily verify.

4 0

3 years ago

Answer please. I will mark brainiest if right.

Alexandra [31]

Answer:

In this order from 1-10: F, F, F, T, T, F, F, T, T, F

Explanation:

Planets are named almost entirely from Roman gods and goddesses,

The sun is not the center of the universe, just the center of the solar system,

The solar system is believed to be formed in a gaseous nebula,

Planets and stars did form when matter clumped together with gravity,

Our solar system is believed to have 5 dwarf planets,

Mercury is the closest planet to the sun,

Jupiter has the greatest size and diameter,

Orbits of planets are more elliptical, meaning it's more of an oval shape,

Our sun is BY FAR not the only star with planets around it.

3 0

3 years ago

What is the difference between speed and velocity and give an example.

bogdanovich [222]

Velocity is the speed with a direction and speed does not have a direction.

For example your driving 200km/hr (the speed) in a northerly direction. This is analogous to the difference between distance and displacement.

6 0

3 years ago

How does an executive order differ from a statue?

ICE Princess25 [194]

Answer: Executive Order on Protecting American Monuments, Memorials, and Statues against our country are public monuments, memorials, and statues.

Explanation: learned it last week

6 0

3 years ago