Answer:
friction = 49 N, a = 2.5 m/s/s
Explanation:
big brain
The lamp transfers electric energy into both light and thermal energy when it turns on
Answer:
22N West
Explanation:
45-23 because they are in opposite directions.
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<h3>Explanation</h3>
The Stefan-Boltzmann Law gives the energy radiation <em>per unit area</em> of a black body:
where,
the total power emitted, 
the surface area of the body, 
the Stefan-Boltzmann Constant, and
the temperature of the body in degrees Kelvins.
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.
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Keep as many significant figures in as possible. The error will be large when is raised to the power of four. Also, the real value will be much smaller than 
since the emittance of a human body is much smaller than assumed.
Answer:
The option is B is not true for Hubble telescope.
