1). Because every speck of matter in the Universe exerts gravitational force on every other speck of matter. The strength of the force depends on the masses of both specks, and the distance between them.
2). Because the Earth has about 80 times as much mass as the moon has.
Answer:
(D) Water is denser than oil but less than syrup.
Explanation:
Given:
A picture of a jar containing three liquids.
The position of the syrup is at the bottom of the jar. The position of water is in middle and the oil is at the top.
We know that, the oil is the lightest in density when compared to syrup and water. So, it is at the top.
Now, since water is in the middle of the two, it means that density of water is greater than that of oil but less dense than that of syrup.
So, the density of the syrup is the greatest. Hence, it sits at the bottom.
Therefore, the best explanation is that water being less dense than syrup but more dense than oil, will be in the middle of two.
This explains the position of all the three liquids. Water is in the middle, oil at top and syrup at bottom.
So, the last option is correct.
Answer:
a. The total circuit resistance equals the sum of the individual resistors.
c. The voltage drop across each bulb is the same.
Explanation:
Electric devices are said to be connected in series when they are connected along the same branch.
In such scenario, the current flowing through the devices is the same.
Moreover, the total resistance of N resistors in series is given by the sum of the individual resistances:
Given that, we can now analyze the 4 statements:
a. The total circuit resistance equals the sum of the individual resistors. --> TRUE, as we said above
b. The current decreases the same amount as it passes through each bulb. --> FALSE, the current does not decrease.
c. The voltage drop across each bulb is the same. --> TRUE, since the voltage drop across each bulb is
where I is the current (the same in the 3 bulbs) and R the resistance (the same for each bulb)
d. The first bulb shines more brightly than the last one. --> FALSE: since the 3 bulbs have the same current, they shine the same
2s
Explanation:
Given parameters:
Current = 0.835A
Quantity of charge = 1.67C
Unknown:
Time taken = ?
Solution:
The quantity of electricity Q in coulombs is the product of the current I and time t.
Q = I x t
Q is the quantity of electricity in coulombs
I is the current
t is the time taken
input the values and solve for t;
1.67 = 0.835 x t
t = = 2s
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Answer:
Motion may be divided into three basic types — translational, rotational, and oscillatory.
Explanation: