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3 years ago

Which statements are part of the safety protocol for this lab experiment? Check all that apply.

Physics

2 answers:

tekilochka [14]3 years ago

8 0

Answer:

Always wear safety goggles when performing an experiment.

Use caution when dropping objects and/or launching them into the air.

Use only the materials that your teacher provides or approves.

Check the soda bottle and its cap for cracks and chips prior to use.

Report all accidents—no matter how big or small—to your teacher.

Mazyrski [523]3 years ago

5 0

Answer:

1. Always wear a lab coat and safety goggles when performing an experiment

2. Use the right gear, such as tongs and thermal mitts, to handle hot objects

3. Check glassware, such as beakers and flasks, for cracks and chips prior to use.

Explanation:

It is in the safety section of the student guide for edge.

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3 years ago

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2 years ago

how much gravitational potential energy do you give a 70 kg person when you lift him up 3 m in the air?

SCORPION-xisa [38]

Given gravitational potential energy when he's lifted is 2058 J.

Kinetic energy is transferred to the person.

Amount of kinetic energy the person has is -2058 J

velocity of person = 7.67 m/s².

<h3>Explanation:</h3>

Given:

Weight of person = 70 kg

Lifted height = 3 m

1. Gravitational potential energy of a lifted person is equal to the work done.

$PE_g=W=m\times g\times h\\Acceleration due to gravity = g = 9.8 \ m/s^2 \\PE_g= m = m\times g\times h= 70\times 9.8 \times 3 = 2058\ kg.m/s^2 = 2058\ J$