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dlinn [17]
3 years ago
13

If a girl is standing still and holding a box, is she doing any work? (No)

Physics
2 answers:
SpyIntel [72]3 years ago
7 0

Answer:

gravity

Explanation:

maxonik [38]3 years ago
6 0
The gravity on the box is not the same force as the movement
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A clay pot at room temperature is placed in a kiln, and the pot\'s temperature doubles. how much more heat per second is the pot
xeze [42]

Answer:

16

Explanation:

If we treat the pot as a black body, then:

q = σ T⁴ A,

where q is the heat per second radiated,

σ is the Stefan-Boltzmann Constant,

T is the absolute temperature,

and A is the surface area.

If the absolute temperature doubles, then q increases by a factor of 2⁴ = 16.

7 0
3 years ago
The terminal velocity of a sand grain in air is __________ the terminal velocity of the same sand grain in seawater. greater tha
hoa [83]
<span>The terminal velocity of a sand grain in the air is greater than the terminal velocity of the same sand grain in seawater. The terminal velocity is greater in the air because it is less dense compared to a much denser sea water. Terminal velocity takes lace when an object is constantly free-falling.</span>
7 0
4 years ago
A particle is traveling in the positive direction along an x axis, at a constant 5 m/s. Which of the following describes the par
vaieri [72.5K]
1-zero as the velocity is constant
3 0
3 years ago
Which characteristics do temperate marine and temperate continental climates have in common? Check all that apply.
katrin2010 [14]

Answer:

moderate amount of precipitation

two seasons with temperature differences

Explanation:

Temperate marine climates is also known as oceanic climate and areas who experience this climate are closer to oceans. There is relative precipitation all round the year due to the close proximity to the water body and have the hot and cold season.

The temperate continental climate also has two season and relative rainfall but found in the areas along the Northern hemispheres.

Both climates have moderate amount of precipitation and two seasons with temperature differences.

6 0
3 years ago
A truck starts off 151 miles directly north from the city of Hartville. It travels due east at a speed of 41 miles per hour. Aft
Bess [88]

Answer:

9.51

Explanation:

The distance s is given by:

s(t) = \sqrt{151^2 + (vt)^2}

The change in distance is given by the time derivative of s:

\frac{ds}{dt} = \frac{v^2t}{\sqrt{151^2 + (vt)^2}}

For the time t you solve the equation of distance x for time:

x = vt => t = \frac{x}{v}

Plugging in for t:

\frac{ds}{dt}(t=\frac{x}{v})=\frac{vx }{\sqrt{151^2 + x^2}}=9.51

6 0
3 years ago
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