Answer:
(b) 50,000 J
Explanation:
it starts with 20,000 and ends with 70,000 so the difference is 50,000
hope this helps:)
Answer:
It will double.
Explanation:
Newton's Law of Gravity states that , where G is the gravitational constant, <em>r</em> is the distance between the objects' centers, and and are the objects' masses. We just have simple math here: by doubling , we double the entire fraction. By doubling the entire fraction, we double the gravitational pull. Therefore, <em>Newton's Law of Gravity states that if the mass of one object doubles, the gravitational pull on a second object will </em><em>double</em><em>.</em>
I hope this helps you understand it! Have a great day, 'kay?
Answer:
The final velocity of apple and arrow after the collision is 2 m/s.
Explanation:
Given that,
Mass of an arrow, m = 0.5 kg
Initial velocity of the arrow, v = 10 m/s
Mass of an apple, m' = 2 kg
Initial velocity of the arrow, v' = 0 (at rest)
We need to find the final velocity of apple and arrow after the collision. After the collision, the arrow and the apple are stuck together. It is a case of inelastic collision. Let V is the final velocity of apple and arrow after the collision. Using the conservation of linear momentum as :
So, the final velocity of apple and arrow after the collision is 2 m/s.
Answer:
Explanation:
Given that,
Current measure is
i=10±0.6 Amps
And also,
R=45.0±2.0 Ω
Power dissipated by
P=i²R
Then
P=(10±0.6)²(45.0±2.0)
P=10²×45
P=450Watts
Now, calculating the uncertainty
∆P=|P| • √(2(∆i/i)²+(∆R/R)²)
∆P=450√ (2×(0.6/10)²+(2/45)²)
∆P=450√(0.0072+0.001975)
∆P=450√0.009175
∆P=43.1
The uncertainty in power is 43.1
Then,
P=450 ± 43.1 Watts