Explanation:
here we have mass(m);20 000N in kg will be 9.8kg
acceleration due to gravity (g): 10m/s
height (h) : 10m
so work done will be,
W=mgh
9.8x10x10
980joules
<span>Acceleration of ball (a) = 9.8 m/s^2
Speed (v) = 24.5 m/s
Time (t) = Acceleration / Time
= v / a
= 24.5/9.8
= 2.5 s
So it will take 2.5 seconds to reach that speed.</span>
<span>the color of a star is primarily determined by its : suface temperature.
The surface temperature is used to estimate the wavelength that radiated within.
the star with lower wavelegth tend to have purple-ish color, while the one with higher wavelength tend to have orange-ish color</span>
Answer:
When put into steam
Explanation:
When a certain amount of steam at boiling temperature condenses (turning into water), the amount of heat released is
where in this case
m = 25.0 g = 0.025 kg is the mass of steam at 100.0°C
is the latent heat of vaporization of water
So,
Instead, the amount of heat released when the water at 100.0°C is cooled down to 34.0°C is given by
where
m = 25.0 g = 0.025 kg is the mass of water
is the specific heat of water
is the change in temperature
Therefore,
Since 
, we can say that your hand will burn more in the first case.
