The earth connection is because the earth connection(third cable) helps to prevent the casing from turning into a live wire.
It is normal to find that the cable that is used in the pressing iron has three wires that connect to live, neutral and earth. The earth connection is very important in the pressing iron.
The reason why we ought to have the earth connection is because the earth connection helps to prevent the casing from turning into a live wire.
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Answer:
B= 5626.77 m
C= 6220. 5 m
Explanation:
Because the sum of the vectors must be equal to zero, then the result force in x and the result force in y must be zero.
We propose 2 equations x-y to solve the problem:
Rx :resulting from forces at x
Ry: resulting from forces at y
Rx= Ax+Bx+Cx=0
Ry= Ay+By+Cy=0
Ax =1550 *cos25.6°= 1397.84
Ay =1550 *sin25.6° = 669.73
Bx= B*sin41° = 0.656B
By= -B*cos41° = -0.7547 B
Cx= -C*cos35.1°= -0.8181 C
Cy= C* sin35.1° = 0.575 C
Rx= 1397.84+0.656B-0.8181 C=0
Ry= 669.73-0.7547 B+ 0.575 C=0
System of 2 equations with 2 incognites:
+0.656B-0.8181 C= - 1397.84
-0.7547 B+ 0.575 C= -669.73
Resolving the system:
B= 5626.77 m
C= 6220. 5 m
Since the vectors A, B, and C add to zero, their x and y components should add up to zero as well. This information helps create a system of linear equations to solve for the magnitudes of vectors B and C.
The subject matter of this vector question involves physics, specifically vector addition and vector resolution. The key point you must understand here is that these vectors add up to a total of zero. This gives us an equation to solve for the magnitudes of the other vectors, B and C.
First, break each vector into its x (east-west) and y (north-south) components and set up the system of equations. For example, Ax = 1550 cos(25.6°), Ay = 1550 sin(25.6°). Notice that the direction for vector B is given as east of south, which means B's x component is negative and its y component is positive.
When these are added together they should equal zero (since A + B + C = 0), so you will have two equations to solve for the magnitudes of B and C. This is a system of linear equations you'll need to solve, either manually or with calculator.
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B. move from the negatively charged body to the positively charged body.
C. remain in the negatively charged body.
D. move from the positively charged body to the negatively charged body.
During a race, a horse's speed increases from 65 m/s to 73 m/s during the last 5.0 seconds of that race, 1.60 m/s² was the rate of acceleration during this time.
The rate of change of velocity is defined as acceleration. Acceleration usually indicates that the speed is changing, but this is not always the case. When an object moves in a circular path at a constant speed, it is still accelerating because its velocity direction changes.
Acceleration occurs when the speed of an object increases or decreases, or when it changes direction. Acceleration, like velocity, has two types: average and instantaneous.
a = v - v₀ / t
Then, a = 73 × 65 / 5
a = 1.60 m/s²
Thus, 1.60 m/s² was the rate of acceleration during this time.
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Answer:
1.6m/s²
Explanation:
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Answer:
The volume of the object = 0.0203 m³
Explanation:
From Archimedes principle,
Upthrust = lost in weight = amount of water displaced.
U = W₁ - W₂
Where U = upthrust, W₁ = Weight in air, W₂ = weight in water.
U = 930- 731
U = 199 N.
but mass of water displaced,
m = U/g where g = 9.8 m/s²
m = 199/9.8
m = 20.31 kg.
Recall,
Density = mass/volume.
Density of water = mass of water displaced/ volume of water displaced
D = m/V
V = m/D......................................... Equation 1
Where V = volume of water displaced, m = 20.31 kg, D = 1000 kg/m³
Substitute into equation 1
V = 20.31/1000
V = 0.0203 m³
the volume of water displaced = 0.0203 m³
Note: That when an object is immersed in water, the volume of water it displaced is equal to it's volume.
Hence, Volume of water displaced = volume of the object.
Hence the volume of the object = 0.0203 m³