Answer:
Explanation:
moment of inertia of reel = 1/2 mr² , m is mass and r is radius of the reel
= .5 x .7 x .0524²
= 96.1 x 10⁻⁵
If force required be F
F x .0524 - 1.88 is net torque acting on the reel
F x .0524 - 1.88 = moment of inertia x angular acceleration.
F x .0524 - 1.88 = 96.1 x 10⁻⁵ x 65.7
F x .0524 - 1.88 = .063
F x .0524 = .063 + 1.88
F = 37.08 N
From the calculations, the final momentum of B is 8.16 m/s
<h3>What is conservation of linear momentum?</h3>
According to the principle of the conservation of linear momentum, the momentum before collision is equal to the total momentum after collision.
This implies that;
MaUa + MbUb = MaVa + MaVa
Substituting values;
(0.08 kg * 0.5 m/s) + (0.05 kg * 0 m/s) = (0.08 kg * −0.1 m/s) + (0.05 kg * v)
0.4 = -0.008 + 0.05v
v = 8.16 m/s
Learn more about more about momentum: brainly.com/question/24030570:
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Answer:
120 W lightbulb
Explanation:
Let the two lightbulb be A and B respectively.
Given the following data;
Power A = 120W
Power B = 90W
Voltage = 120V
To find the current flowing through each lightbulb;
a. For lightbulb A
Power = current * voltage
120 = current * 120
Current = 120/120
Current = 1 Ampere.
b. For lightbulb B
Current = power/voltage
Current = 90/120
Current = 0.75 Amperes
Therefore, the lightbulb that carries more current is A with 1 Ampere.
Answer:
A. The rate of groundwater flow is faster than that of surface-water currents
Explanation:
A velocity of 1 foot per day or greater is a high rate of movement for ground water, and ground-water velocities can be as low as 1 foot per year or 1 foot per decade. In contrast, velocities of streamflow generally are measured in feet per second.
Horizontal movements are called currents, which range in magnitude from a few centimetres per second to as much as 4 metres (about 13 feet) per second. A characteristic surface speed is about 5 to 50 cm (about 2 to 20 inches) per second.
An ocean current is any more or less permanent or continuous, directed movement of ocean water that flows in one of the Earth's oceans. The currents are generated from the forces acting upon the water like the earth's rotation, the wind, the temperature and salinity differences and the gravitation of the moon
Answer:
<h2>
14.4 m</h2>
The distance covered by the body is <u>1</u><u>4</u><u>.</u><u>4</u><u> </u><u>m</u><u>.</u>
<u>Sol</u><u>ution</u><u>,</u>
Initial velocity(u)= 0 m/s( according to Question, the body starts from rest.that's why initial velocity(u) becomes zero.
Acceleration (a)= 0.2 m/s
Time (t):
Now,
Applying third equations of motion:
Thus, the distance covered by the body is 14.4 metre.
Further more information:
<h3>
<u>Application</u><u> </u><u>of</u><u> </u><u>equation</u><u> </u><u>of</u><u> </u><u>motion</u><u> </u><u>in</u><u> </u><u>differ</u><u>ent</u><u> </u><u>situa</u><u>tion</u><u>:</u></h3>
- When a certain object comes in motion from rest, in the case, initial velocity(u)= 0 m/s
- When a moving object comes in rest,in the case, final velocity(v)= 0 m/s
- If the object is moving with uniform velocity, in the case, (u=v)
- If any object is thrown vertically upward, in the case, acceleration (a)= -g
- When an object is falling from certain height, in the case, u= 0 m/s
- When an object is thrown vertically upwards in the case, final velocity at maximum height becomes 0.
