Answer:
Height with sound ignored = Gravity x Time taken = 9.8 x 8.60 = 84.28 meters
Time taken by the sound = 84.28/330 = 0.255 seconds
Height with sound involved = (84.28 x 0.255) + 84.28 = 105.80 meters
a. Underestimated
Answer: 1.4 x 10^-8N
Explanation:
Given that,
Mass of Particle 1 (m1) = 12kg
Mass of Particle 2 (m2) = 25kg
distance between particles (r) = 1.2m. Gravitational force (F) =
Apply the formula for gravitational force:
F = Gm1m2/r²
where G is the gravitational constant with a value of 6.7 x 10^-11 Nm2/kg2
Then, F = (6.7 x 10^-11 Nm²/kg² x 12kg x 25kg) / (1.2m)²
F = (2.01 x 10^-8Nm²) / (1.44m²)
F = 1.396 x 10^-8N (Rounded to the nearest tenth as 1.4 x 10^-8N)
Thus, the magnitude of the gravitational force acting on the particles is 1.4 x 10^-8 Newton
Based on the voltage of the batteries and the internal resistance, the bulb's resistance is 4.595 Ω
<h3>What is the resistance?</h3>
First, find the total emf of the circuit:
= 2 x 1.5V
= 3.0V
The internal resistance is:
= 0.255 + 0.15
= 0.405 Ω
The resistance in the bulb is:
= 3.0 / 0.600 - 0.405
= 4.595 Ω
Find out more on resistance at brainly.com/question/24974191
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Answer: 50 km, 0, 27.78 m/s
Explanation:
Given
Circumference of the track is 
Speed of car is 
Car drives for 
(a)Distance traveled is
(b)displacement of the car
It can be observed that 12.5 is a multiple of 50, that is, 50 km can be interpreted as 4 complete rounds of the track.
Therefore, the displacement of the car is zero.
(c)To convert kmph to m/s, multiply the entity by 
Answer:
The center of mass of the two-block system is staying the same and it can be explained with the help of linear momentum equation.
Explanation:
The center of mass of the two-block system is staying the same and it can be explained with the help of linear momentum equation.
Equation:
P=mv
This equation holds if no external force is acting on the system it means the momentum of the system is constant.
In our case, there is no external force which means the total momentum of system is constant:
P=constant
Total mass of system is also constant:
m=constant
It means the velocity of the system is constant (from above equation) thus center of mass of the two-block system is staying the same
