Light of different colors is emitted from different stars because :.

A girl walks from her home to a friends house 3 km north she then walks East 2 km to the post office then 1 km north to the libr

ale4655 [162]

Answer:

what airplane does she like?

Explanation:

6 0

3 years ago

If our eyes could see a slightly wider region of the electromagnetic spectrum, we would see a fifth line in the Balmer series em

melamori03 [73]

Answer:

λ = 397 nm

Explanation:

given,

Rydberg wavelength equation for Balmer series

$\dfrac{1}{\lambda}=R(\dfrac{1}{n_f^2}-\dfrac{1}{n_i^2})$

R is the Rydberg constant, R = 1.097 x 10⁷ m⁻¹

n_i = initial energy level

n_f = final energy level

where as for Balmer series n_f = 2

n_i = 7

$\dfrac{1}{\lambda}=(1.097\times 10^7)(\dfrac{1}{2^2}-\dfrac{1}{7^2})$

$\dfrac{1}{\lambda}=2.5186\times 10^6$

$\lambda = 3.97\times 10^{-7}$

Hence, the wavelength is equal to λ = 397 nm

8 0

3 years ago

Calculate the average speed of spacecraft orbiting mars

salantis [7]

That completely depends on the size of the orbit. Similarly at Earth, a TV satellite takes 1 day for an orbit, but the Moon takes 27.3 days.

4 0

3 years ago

Compare the energy consumption of two commonly used items in the household. calculate the energy used by a 1.20 kw toaster oven,

slamgirl [31]

<span>we know energy = power*time(in hour) so energy used by 1.20kw(1200 watt) toast oven used for 6.2 min(6.2/60 hour) = 1200*(6.2/60)=1200*0.103 = 124 watt hour. Energy used by 11 w cfl used for 8.50 hour = (11*8) + (11* (50/60)) = 88+9.166=97.166 watt hour.</span>

5 0

3 years ago

Read 2 more answers

PLEASE HELP!!

natali 33 [55]

Answer:

biosphere and geosphere

Explanation:

8 0

3 years ago