Q = m.s.Δt
Δt = Q /m.s
Here, Q = 30,000 J
m = 390 g
s = 3.9 J/g C
Substitute their values,
= 30,000 / 390 *3.9
= 30,000 / 1521
= -20 C (approx.) [-ve sign 'cause temperature is decreasing ]
In short, Your Answer would be Option D
Hope this helps!
Answer:
First trial: Big ball dropped first, feather fell much later
Second trial: Big ball and small bell fell at same time
Third trial: small ball fell first, feather fell later
Explanation:
happy to help ya:)
B Longitude
Explanation:
The line of longitude or longitude does not affects climates.
Climate is the weather condition over a place for a long period of time. It usually takes several years to delineate the climate of an area.
- Longitude is the distance on the earth surface that runs form east to west.
- All lines of longitude are all great circles.
- Latitude are lines from north to south on the earth surface. Only the equator is a great circle.
- Latitude affects climate. In fact based on the division of lines of latitude on can predict climatic patterns on earth.
- Proximity to water bodies also affects climatic condition because of the effect of land and sea breeze and other climatic factors.
- Elevation affects climate a whole lot. Physiography of a place determines the weather to a very large extent.
learn more:
Climate brainly.com/question/10856870
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The correct answer is: directional force
Explanation:
A vector quantity is a quantity which has both a magnitude and a direction.
A field is always associated with a force, which means that the field produces a force on an object located in the field. The force itself is a vector, since it has a magnitude and a direction.
Therefore, the magnetic field is a vector quantity since it is associated with a directional force.