3 years ago

Which describes the changes in visible light moving from red to violet?

1 answer:

3 0

The wavelength decreases to roughly half.
(The frequency roughly doubles.)

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iogann1982 [59]

Answer:

R=V/I=6/2=3ohm

time =5minutes =5*60=300seconds

I=2A

Heat =I^2Rt=(2)^2*3*300=4*900=3600J

7 0

3 years ago

USPshnik [31]

120 volts for most home a phone charger can convert 120 volts ac to 5 volts dc

3 0

3 years ago

tamaranim1 [39]

True ..........................

7 0

3 years ago

snow_tiger [21]

ANSWER:

3408.81 kg

STEP-BY-STEP EXPLANATION:

Given:

v = 111 m/s

Ek = 21000000 J

We have that the formula for kinetic energy is as follows:

$E_k=\frac{1}{2}\cdot m\cdot v^2$

We substitute the values given in the exercise and solve for m (mass)

$\begin{gathered} 21000000=\frac{1}{2}\cdot m\cdot111^2 \\ m=\frac{21000000\cdot2}{111^2} \\ m=3408.81\text{ kg} \end{gathered}$

The mass of the helicopter is 3408.81 kilograms.

7 0

1 year ago

Karolina [17]

The correct response is B .

6 0

3 years ago