First to answer will be the brainliest I need the answer ASAP answer questions 2 3 and 4

Physics

1 answer:

Irina-Kira [14]4 years ago

7 0

2. False

Explanation: When a wave's energy increases, the wave length/frequency decreases.

3. Bass Guitar

Explanation: It has the lowest frequency.

4. Frequency

Explanation: The frequency is the number of vibrations per unit of time or the number of waves that passes a point per unit of time.

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dem82 [27]

The electric field strength is inversely related to the square of the distance.so the strength of the electric field is given by

$E=\frac{1}{4\pi \epsilon _{0} } \frac{q}{r^{2} } = \frac{k q}{r^{2} }$

Here, $\frac{1}{4\pi \epsilon _{0} } = k$ is constant depend upon medium and its value is $9.0 \times10^{9} \ N m^2/C^2$ and q is charge and r is the distance.

Given $r = 0.90 mm = 9.0 \times 10^{-4} m$ and we know the charge of proton, $q = 1.6\times 10^{-19} \ C$ .

Therefore,

$E=\frac{9.0 \times10^{9} \ N m^2/C^2 \times1.6\times 10^{-19} \ C }{(9.0 \times 10^{-4} m)^2} = 0.177 \times 10^{-2} \ N/C \\\\ E= 1.77 \times 10^{-3} N/C$

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Marcus used a toaster oven in the morning.He notices that when he plug it in and turn it on the coils inside begin to glow red w

Rasek [7]

Answer:Conversion of electric energy to Heat energy

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Alik [6]

Answer:

I think decreases inversely

Explanation:

the third

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A thin film of oil of thickness t is floating on water. The oil has index of refraction no = 1.4. There is air above the oil. Wh