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Jlenok [28]
3 years ago
7

A weight lifter lifts a 1.0 x 102 kg mass 1.5 m in 2.0 s. The power is?

Physics
1 answer:
Serga [27]3 years ago
6 0

Answer:

\boxed{p =  {7.4 \times 10}^{2} W} \to \: option \: c.

Explanation:

his \: power \: is \to \\ p =  \frac{mgh}{t}  \\ p =  \frac{1.0 { \times 10}^{2}  \times 1.5 \times 9.8}{2.0}   \\  p= 735 \\  \boxed{p =  {7.4 \times 10}^{2} }

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A particular electric car is supplied with 300 kJ of chemical energy by the battery. Of this, a total of 70.5 kJ of energy is wa
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\\ \sf\longmapsto 300-70.5=229.5kJ

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From laboratory measurements, we know that a particular spectral line formed by hydrogen appears at a wavelength of 121.6 nanome
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v=-4.93\times 10^{5}~m/s [negative sign denotes that it is moving away]

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<u>So, shift in wavelength</u>:

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