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dlinn [17]
3 years ago
10

A student is measuring the volumes of nectar produced by a flowering plant for an experiment. He measures nectar from 50 flowers

using a graduated cylinder that measures to the nearest milliliter(mL). Which statement describes a change that could help improve the results of his experiment
Physics
1 answer:
pantera1 [17]3 years ago
6 0

The question is incomplete, the complete question is;

A student is measuring the volumes of nectar produced by a flowering plant for an experiment. He measures nectar from 50 flowers using a graduated cylinder that measures to the nearest millilitre (mL). Which statement describes a change that can help improve the results of his experiment?

A.) His measurements will be more precise if he takes measurements from an additional 100 flowers. B.) His measurements will be more accurate if he uses a graduated cylinder that measures to the nearest tenth of a mL. C.) His measurements will be more precise if he uses a graduated cylinder that measures to the nearest tenth of a mL. D.) His measurements will be more accurate if he takes measurements from an additional 100 flowers.

Answer:

His measurements will be more accurate if he uses a graduated cylinder that measures to the nearest tenth of a mL.

Explanation:

In the measurements of volume using most graduated cylinders, the cylinders are calibrated to the nearest tenth owing to the uncertainty in the measurement of volume.

Hence if a cylinder has measures to the nearest milliliter(mL), then he can improve his experiment by using a graduated cylinder that measures to the nearest tenth of a mL

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A hypothesis is a limited explanation of a phenomenon; a scientific theory is an in-depth explanation of the observed phenomenon. A law is a statement about an observed phenomenon or a unifying concept

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A 3.0-kilogram object is acted upon by an impulse having a magnitude of 15 newton•seconds. What is the magnitude of the object’s
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A 250 g toy car is placed on a narrow 60-cm-diameter track with wheel grooves that keep the car going in a circle. The 1.5 kg tr
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Answer:

\omega_{t}=-3.9 rpm

Explanation:

Let's use the conservation of angular momentum here. If there is a conservation the addition of both must be zero.

L_{c}+L_{t}=0

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I_{c}=m_{c}R^{2}

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The angular momentum is the product between angular velocity and momentum of inertia.

I_{c}\omega_{c}+I_{t}\omega_{t}=0

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\omega_{t}=-\frac{m_{c}R^{2}*V/R}{m_{t}R^{2}}

\omega_{t}=-\frac{m_{c}V}{m_{t}R}

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Knowing that 2π  rad is a rev. We have.

\omega_{t}=-3.9 rpm

The minus sign means the track is moving opposite of the car.      

I hope it helps you!

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