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Sonbull [250]
3 years ago
14

What are the fundamental characteristics of a vector

Physics
1 answer:
VMariaS [17]3 years ago
7 0

Answer:

The two defining characteristics of a vector are its magnitude and its direction.

Explanation:

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A small block with mass 0.0350kg slides in a vertical circle of radius 0.525m on the inside of a circular track. During one of t
kirill115 [55]

Answer:

w = -0.475N

Explanation:

K.E_{a} + P.E_{a} + W_{fr} = K.E_{b} + P.E_{b}\\K.E = 0.5mv^{2} \\Normal force at point B, N_{B} = 0.665N\\Normal force at point A, N_{A} = 3.85N\\

To get Va and Vb

F = mv_{A} ^{2} /R................(1)\\F = N_{A} - mg.........................(2)\\mv_{A} ^{2} /R =  N_{A} - mg\\v_{A} ^{2} = R (N_{A}/m - g)\\v_{A} = \sqrt{ R (N_{A}/m - g)}

R = 0.525 m

m = 0.0350 kg

g = 9.8 m/s²

v_{A}= \sqrt{0.525(3.85 /0.0350 - 9.8)} \\v_{A} = 7.25 m/s

K.Ea = 0.5 * 0.035 * 7.25²

K.Ea = 0.92 J

Since point A is at the bottom of the path, h = 0 m

P.Ea = 0 m

For Vb

F = mv_{B} ^{2} /R................(1)\\F = N_{B} - mg.........................(2)\\mv_{B} ^{2} /R =  N_{B} - mg\\v_{B} ^{2} = R (N_{B}/m - g)\\v_{B} = \sqrt{ R (N_{B}/m - g)}

N_{B} = 0.665N

v_{B}= \sqrt{0.525(0.665 /0.0350 - 9.8)} \\v_{B} = 2.198 m/s

K.E_{B} = 0.5* 0.035 * 2.198^{2} \\K.E_{B} = 0.085 J

P.E_{B} = mgh_{B} \\h_{B} = A diameter = 2R = 2 * 0.525\\h_{B} = 1.05 m\\P.E_{B} = 0.035 * 9.8 * 1.05\\P.E_{B} =0.36 J

from K.E_{a} + P.E_{a} + W_{fr} = K.E_{b} + P.E_{b}

0.92 + w_{fr} + 0 = 0.085 + 0.36\\ w_{fr} = -0.475J

7 0
4 years ago
What color of light is scattered the most by the molecules in earth’s atmosphere?.
Ahat [919]

Answer:

Blue light

Explanation:

Gases and particles in Earth's atmosphere scatter sunlight in all directions. Blue light is scattered more than other colors because it travels as shorter, smaller waves.

7 0
2 years ago
Read 2 more answers
What is the rate at which electrical energy is converted into another form
34kurt
The RATE of producing, moving, converting, or using energy is "power".
The unit is "watt".  1 watt means 1 joule of energy per second.
7 0
3 years ago
An open system starts with 52 J of mechanical energy. The energy changes
spayn [35]

Answer:

I think the answer is D,54 joules

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Investigator Campbell has bullets that were collected from the crime scene and puts them under her comparison microscope. What o
fgiga [73]

Answer:

Test bullets fired from the suspected gun

Explanation:

This is the correct answer!! I took the test!!

6 0
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