On a friction-free inclined plane, a block glides up the inclined plane (eventually it will stop...

On a friction-free inclined plane, a block glides up the inclined plane (eventually it will stop and slide down again, but in this task we look at it as it glides upwards). Which option is right:

Gravity does a positive job. The normal force does a positive job.

Gravity does a negative job. The normal force does a positive job.

Gravity does zero work. Normal force performs zero work.

Gravity does zero work. The normal force does a positive job.

Gravity does zero work. The normal force does a negative job.

Gravity does a negative job. The normal force does a negative job.

Gravity does a negative job. Normal force performs zero work.

Gravity does a positive job. Normal force performs zero work.

Gravity does a positive job. The normal force does a negative job.

A body has a surface area of 0.10m2 and emissivity equal to 1. The body's radiant heat is 110W, what is the body's temperature?

100ºC
1200ºC
200ºC
400ºC

A two-atomic ideal gas has the starting pressure p0, the starting volume V0 and the starting temperature 0ºC. The gas undergoes an isobar compression so that the new volume becomes
V09. What is the new print?

p09
0,9•p₀
9p₀
p₀
imposible to answere

800ºC
600ºC

Solutions

Expert Solution

genius_generous answered 1 year ago

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