Q = mcΔT
q = 55.8g x 0.450J/gC x 23.5C 
q = 590. J ................ to three significant digits

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8 0

2 years ago

Read 2 more answers

Need an answer, please need an answer, please

Karolina [17]

9514 1404 393

Answer:

moderate low: 82
moderate high: 112.75
vigorous low: 123
vigorous high: 174.25

Explanation:

When calculations are repetitive, I find it convenient to use a calculator that can work with tables.

The PMHR is (220 -15) = 205.

Each of the other heart rates is computed as the formula shows. For example, the low moderate heart rate is 205×0.40 = 82 bpm

The other rates are shown in the attached table. They are computed the same way.

6 0

2 years ago

In an experiment conducted using the Young's double-slit apparatus, the separation between the slits is 20 µm. A first-order con

jeka57 [31]

To solve this problem, we use the formula
λ = s sin θ
where s is the separation and θ is the angle interference
So,
λ = 20 x 10^-6 sin 2.5
λ = 8.72 x 10^-7 m

The required angle for the fourth order bright fringe is
θb = sin⁻¹ (4λ / s) = sin⁻¹ (4 (8.72 x 10^-7 m)/ 20 x 10^-6 ) = 10.04°

The required angle for the fourth order dark fringe is
θd = sin⁻¹ (4.5 λ / s) = sin⁻¹ (4.5 (8.72 x 10^-7 m)/ 20 x 10^-6 ) = 11.31°

6 0

2 years ago

Please help me!!!!!!!! it's due soon!!!!!!!!!!!!! NO LINK!!!!!!!!!

maria [59]

.75(m/s)^2

Use this picture
If you know the two on the bottom you multiply them but if you only know the top and one on the bottom you divide

7 0

2 years ago