Answer: the volleyball
Explanation:
The volleyball, in contrast, is full of air, which contains fewer, more widely spaced particles of matter. In other words, the matter inside the bowling ball is denser than the matter inside the volleyball. A bowling ball is denser than a volleyball.
Answer:
Approximately and approximately .
Explanation:
Let and denote the capacitance of these two capacitors.
When these two capacitors are connected in parallel, the combined capacitance will be the sum of and . (Think about how connecting these two capacitors in parallel is like adding to the total area of the capacitor plates. That would allow a greater amount of charge to be stored.)
.
On the other hand, when these two capacitors are connected in series, the combined capacitance should satisfy:
.
(Consider how connecting these two capacitors in series is similar to increasing the distance between the capacitor plates. The strength of the electric field () between these plates will become smaller. That translates to a smaller capacitance if the amount of charge stored stays the same.)
The question states that:
- , and
- .
Let the capacitance of these two capacitors be and . The two equations will become:
.
From the first equation:
.
Hence, the in the second equation here can be replaced with . That equation would then become:
.
Solve for :
.
.
.
Solve this quadratic equation for :
or .
Substitute back into the equation for :
In other words, these two capacitors have only one possible set of capacitances (even though the previous quadratic equation gave two distinct real roots.) The capacitances of the two capacitors would be approximately and approximately (both values are rounded to two significant digits.)
Answer:
H₂0_{(s)} + heat → H₂O(l)
Explanation:
An ENDOTHERMIC reaction is a chemical reaction in which heat is absorbed by the reactants. As such the product is usually cooler than the products. In the equation above (the answer), heat is on the reactant side of the equation thus indicating that heat is absorbed by the reactants.
On the other hand, in the first equation heat is on the product side of the equation which is consistent with an Exothermic reaction.
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Answer:
So option (a) is correct option
Explanation:
We have given final speed of the car = 23 m/sec
And initial speed of the car = 30 m/sec
Time in which speed is decreases t = 2 sec
From first equation of motion we know that v = u+at
So acceleration
Negative sign indicate that acceleration will be in opposite direction
So
So option (a) is correct option
Answer:
Earth
Explanation:
"Light travels at a speed of 299,792 kilometers per second; 186,287 miles per second. It takes 499.0 seconds for light to travel from the Sun to the Earth, a distance called 1 Astronomical Unit."
Source : https://image.gsfc.nasa.gov/poetry/venus/q89.html