Answer:
The initial current, Io = 2.06×10^-4A
Explanation:
The I itial current ,Io of a circuit is given by:
Io = Vo/R
Where Vo = initial votage
R = resistance in ohms
Given:
Vo = 1.50V
R = 7290ohms
Io = 1.50/ 7290
Io = 2.06 ×10^-4A
Answer:
The tension in the middle string is 3.3 N
Explanation:
Two boxes move with same acceleration
The tension in the middle string is T
Lets start with the forces acting in the 2nd box
→ The tension T in the string in the direction of motion
Due to Newtons's Law
→ ∑ Force in direction of motion = mass × acceleration
→ T = M a
→ M = 1 kg
Substitute the value of M is the equation
→ T = a ⇒ (1)
The force acting on the 1st box
→ The force F in the direction of motion, and T in the string in opposite
direction of motion
→ F - T = 2M a
→ F = 10 N , M = 1 kg
Substitute These values in the equation
→ 10 - T = 2(1) a
→ 10 - T = 2 a ⇒ (2)
Substitute equation (1) in (2)
→ 10 - T = 2 T
Add T to both sides
→ 10 = 3 T
Divide both sides by 3
→ T = 3.3 N
<em>The tension in the middle string is 3.3 N</em>
Answer:
N/kg
Explanation:
newton/kilogram is the answer.please mark me brainliest
Answer:
Explanation:
We know that weight of an object on Earth is,
Thus,
where,
m = mass of an object, which is constant and is independent of gravity
g = acceleration due to gravity on Earth
On the new planet, gravity = a
Thus the weight of the object on the new planet will be
The correct answer of this question: 18789.79 watt.
EXPLANATION:
As per the question, the surface area of the log is given as A =
The temperature of the of the surface of the log t = 800
We know that
⇒ 800 degree celsius= 800+273 K
= 1073 K.
Here, K stands for kelvin scale.
We are asked to calculate the thermal power radiation .
The power is defined as the amount of energy released per unit time.
Hence, power is calculated as-
Power P =
=
= 18789.79 watt. [ans]
Here, is the Stefan-Boltzmann constant and T is the absolute temperature of the log.