Rain falls vertically downward with the velocity of 3.3 m/s. a boy moves at a speed of 5 m/s east in a bicycle with an umbrella.
what is the velocity of the rain with respect to the boy?
1 answer:
Refer to the diagram shown below.
The velocity of the rain relative to the boy is given by
in a vectorial sense as shown in the figure.
Given:
Vr = 3.3 m/s
Vb = 5 m/s
Use the Pythagorean to obtain
Vr/b = √(3.3² + 5²) = 6 m/s
The angle that Vr/b makes with due east is
θ = tan⁻¹ (3.3/5) = 33.4°
Answer:
The velocity of the rain with respect to the boy is 6 m/s.
The direction of the rain is 33.4° north of due east.
The velocity of the rain relative to the boy is given by
in a vectorial sense as shown in the figure.
Given:
Vr = 3.3 m/s
Vb = 5 m/s
Use the Pythagorean to obtain
Vr/b = √(3.3² + 5²) = 6 m/s
The angle that Vr/b makes with due east is
θ = tan⁻¹ (3.3/5) = 33.4°
Answer:
The velocity of the rain with respect to the boy is 6 m/s.
The direction of the rain is 33.4° north of due east.
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Answer:
Resistance =330 Ω
Tolerance = 33 Ω
Explanation:
see attached resistor color code table
The first stripe is orange, which means the leftmost digit is a 3.
The second stripe is orange , which means the next digit is a 3.
The third stripe is brown. Since brown is 1, it means add one zero to the right of the first two digits.
The resistance is:
orange-orange-brown= 330 Ω
The tolerance is:
The fourth color band indicates the resistor's tolerance. Tolerance is the percentage of error in the resistor's resistance.
silver is 10%
A 330 Ω resistor has a silver tolerance band.
<em>Tolerance = value of resistor x value of tolerance band </em>
= 330 Ω x 10% = 33 Ω
330 Ω stated resistance +/- 33 Ω tolerance means that the resistor could range in actual value from as much as 363 Ω to as little as 297 Ω.
