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3 years ago

The picture shows a student working in the lab.

Physics

2 answers:

algol133 years ago

6 0

1. she doesn't have safety googles .
2. the chems are spilled

Elanso [62]3 years ago

3 0

Answer:

There could be up to four violations if you count the following

1. Her hair is not in pony tail, which could potentially cause the student to set their hair on fire.

2. The student is not wearing lab safety googles/ eye protection.

3. The student has spilled numerous items on the table and has not cleaned them up.

4. The student has a flammable object, the paper towels, on the table with her while she is operating the burner.

Explanation:

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What is the resultant displacement? Explain please to

frutty [35]

The resultant is the vector sum of 2 or more vectors. It is the conclusion of adding 2 or more vectors together. If displacement vectors A, B, and C are added together, the result will be vector R.

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4 years ago

When a piano tuner strikes both the A on the piano and a 440 Hz tuning fork, he hears a beat every 2 seconds. The frequency of t

AysviL [449]

Answer:

The frequency is $f = 439.5 \ Hz$

Explanation:

From the question we are told that

The frequency of the tuning fork is $f_t = 440 \ Hz$

The beat period is $T = 2 \ s$

Generally the beat frequency is mathematically represented as

$f_b = \frac{1}{T}$

$f_b = \frac{1}{2}$

$f_b = 0.5 \ Hz$

The beat frequency is also represented mathematically as

$f_b = f_t - f$

Where $f$ is the frequency of the piano

$f = 440 - 0.5$

$f = 439.5 \ Hz$

3 0

3 years ago

Which is normally greater, the energy in ordinary sound or the energy in ordinary light? how does the speed of sound compare to

Thepotemich [5.8K]

The energy in ordinary light is greater than the energy in ordinary sound

Energy is the ability to perform work in physics. It could exist in several different forms, such as potential, kinetic, thermal, electrical, chemical, radioactive, etc. Additionally, there is heat and work, which is energy being transferred from one body to another.

Energy is a physical system's ability to perform labor. The capital letter E is a typical sign for energy. The joule, denoted by the letter J, is the common unit. The energy produced by one newton's (1 N) worth of force acting over one meter's (1 m) worth of displacement is measured in joules (1 J). Because it is a fundamental human requirement, energy plays a significant role in our daily lives.

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8 0

2 years ago

An object with velocity 141 ft/s has a kinetic energy of 1558.71 ftâˆ™lbf, on a planet whose gravity is 31.5 ft/s2. What is its

Sidana [21]

Answer:

The mass of the object is 5.045 lbm.

Explanation:

Given;

kinetic energy of the object, K.E = 1558.71 ft.lbf

velocity of the object, V = 141 ft/s

The kinetic energy of the object is calculated as;

$K.E = \frac{1}{2} mV^2\\\\mV^2 = 2K.E\\\\m = \frac{2K.E}{V^2} \\\\1 \ lbf = 32.174 \ lbm.ft/s^2\\\\m = \frac{2 \ \times \ 1558.71 \ ft.lbf \ \times \ 32.174 \ lbm.ft/s^2 }{(141 \ ft/s)2 \ \ \times \ \ \ \ 1 \ lbf\ }$

$m = \frac{(2 \ \times \ 1558.71 \ \times \ 32.174) \ lbm.ft^2/s^2 }{(141 )^2\ ft^2/s^2 }\\\\m = \frac{(2 \ \times \ 1558.71 \ \times \ 32.174) \ lbm }{(141 )^2 }\\\\m = 5.045 \ lbm$

Therefore, the mass of the object is 5.045 lbm.

6 0

3 years ago

What is the unit of work? * A. Joule B. Newton/meter C. Watt D. All of the above

djyliett [7]

Answer:

A! I already went through this unit. Joule.

Explanation:

3 0

3 years ago

Read 2 more answers