2 years ago

What is true about the force acting on the cars at the end of a roller coaster ride as they slow down right before stopping?

Physics

2 answers:

rjkz [21]2 years ago

4 0

That the gravity dosent Change

Sliva [168]2 years ago

4 0

Answer: ummm

Explanation:

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Suppose an oven's radiation wavelength is 0.125 m. a container with 350.00 g of water was placed in the oven, and the temperatur

ivann1987 [24]

The heat (energy) needed to raise the temperature of the water is given by
$Q=m C_S (T_f - T_i)=(350.0 g)(4.18 J/gC)(80C-20C)=87780 J$

The wavelength of the radiation of the oven is $\lambda=0.125 m$ , so the energy of a single photon of this radiation is
$E=h \frac{c}{\lambda}=(6.6 \cdot 10^{-34}J) \frac{3\cdot 10^8 m/s}{0.125 m}=1.6 \cdot 10^{-24} J$

So, the number of photons required to heat the water is the total energy absorbed by the water divided by the energy of a single photon:
$N= \frac{Q}{E}= \frac{87780 J}{1.6\cdot 10^{-24}J}= 5.5 \cdot 10^{28}$ photons

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2 years ago

Why does light behave as shown in the image when it passes from air to glass?

Leto [7]

B) Light slows down when it passes into a denser medium.

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2 years ago

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storchak [24]

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