2 years ago

How much of the electromagnetic spectrum is visible to us?

Physics

2 answers:

mihalych1998 [28]2 years ago

3 0

we only see wavelengths from 400–700 nanometers.

Trava [24]2 years ago

3 0

We can only see a small part of a electromatic spectrum . We see visible light even though their are many lights we can't see like infrared light.

You might be interested in

Am I correct?? Will give brainliest

IRISSAK [1]

You are correct earth science is studied to predict planetery changes

4 0

2 years ago

Read 2 more answers

Changing the speed of a synchronous generator changes A) the frequency and amplitude of the output voltage. B) only the frequenc

Dmitrij [34]

Answer:

A) the frequency and amplitude of the output voltag

Explanation:

Changing the speed of a synchronous generator changes both the output voltage (amplitude of the wave) and frequency as they tend to increase.

Changing the speed regulator will change the engine throttle setting to maintain the speed.

While the power, torque, current, fuel flow rate and torque angle will have decreased.

8 0

2 years ago

A box of mass 26 kg is initially at rest on a flat floor. The coefficient of kinetic friction between the box and the floor is 0

Kazeer [188]

Answer:

$\Delta K = 52J$

Explanation:

The change in kinetic energy will be simply the difference between the final and initial kinetic energies: $\Delta K=K_f-K_i$

We know that the formula for the kinetic energy for an object is:

$K=\frac{mv^2}{2}$

where <em>m </em>is the mass of the object and <em>v</em> its velocity.

For our case then we have:

$\Delta K = K_f-K_i=\frac{mv_f^2}{2}-\frac{mv_i^2}{2}=\frac{m(v_f^2-v_i^2)}{2}$

Which for our values is:

$\Delta K = \frac{m(v_f^2-v_i^2)}{2} = \frac{(26Kg)((2m/s)^2-(0m/s)^2)}{2} = 52J$

3 0

2 years ago

a child's toy consists of a piece of plastic attached to a spring. the spring is compressed against the floor a distance of 2.0

Nat2105 [25]

Answer:

1.7N

Explanation:

Force = kx

Where x = spring compression and

K = spring constant

K =85N/m

x = 2.0cm / 100

= 0.02m

Force = 85 x 0.02

= 1.7N

5 0

2 years ago

A brick is lying on a table in a state of static equilibrium. If the mass of the brick is 7.52 kilograms, what is the normal for

WARRIOR [948]

Answer:

-mg = -7.52*9.8 = - 73.696N

7 0

2 years ago